CN1179872A - Telecommunications switch having universal applications program interface for stantardized interactive cell processing communication - Google Patents

Abstract

The present invention is a standardized host-to-switch application program interface (API) for performing call control processing, capable of being customized to meet telecommunications application and network signalling protocol requirements. The universal API comprises one or more generic messages having programmable fields for transmitting commands, status, and data between the host application and the switch. The present invention further comprises a programmable telecommunication switch that provides a user with the ability to define a desired API protocol, either 'standard' or custom in nature, for performing any desired switching functions. The present invention includes a protocol development environment which enables a user to define a separate finite state machine for each port provided by the switch. Each finite state machine may be independently defined by combining a series of elementary processing steps, called atomic functions, into primitives, which are in turn combined with states and events to define the desired state machine. Such state machines may include atomic functions configured to generate predetermined messages under predetermined conditions and containing predetermined information. Such state machines may further include the ability to respond to state events that include the receipt of generic API messages configured to provide the state machine with information from the host application.

Description

Have universal applications program interface and be used for the telecommunications interchanger that the mutual call treatment of standardization is communicated by letter

Background of invention

Invention field

The present invention relates generally to field of telecommunications, more particularly, relate to one and be used for the mutual call treatment of standardization and have the programmatic telecommunication interchanger of the various telecommunications application of support and the universal applications program interface (API) of host computer.

Description of Related Art

The programmatic telecommunication interchanger is used to such as voice announcement, in the multiple application such as remote sale business.The computer of an operation telecommunications application program.Programmable switch is usually by a main process equipment control, usually, can purchase and the commercial applications program or the selection of main frame and interchanger hardware compatibility write the user definition program.

In great majority were used, programmable switch was connected with public telephone network by one or more analog trunk or digital cross-lines (for example T1 cross-line (Span)) that terminate in interchanger.This interchanger can also terminating one or more be connected to " subscribers feeder " such as the such equipment of telephone set.Finish communication on any given trunk line, cross-line or the subscribers feeder according to the signaling protocol that is distributed.

Various switching systems are used, must be controlled the order of exchange incident and carry out function of exchange according to the agreement of necessity." standard " signaling protocol that uses all over the world has many, comprises E﹠amp; The agreement of M signal enabling, loop start, ground start, the international cross complaint R2 agreement of use MFR2 address signaling, and the E1 channel Channel Associated Signaling agreement of using the DTMF/MFR1 signaling.Usually, traditional programmable switch is configured to make a kind of specific signaling protocol to be associated with a kind of specific trunk line, cross-line or subscribers feeder.

In order to satisfy control telecommunications interchanger on the necessary various ranks of particular exchange function, traditional host application program is configured to produce the digital signal order corresponding with many exchange incidents.Correspondingly, traditional communication switch is configured to produce the digital signal relevant with the processing of these incidents on each port and replys.These message be fix or " hard coded " message, each message is used for transmitting information specific between host application program and interchanger.Be called application programming interfaces in order to the telecommunications application program that transmits these message and the interface between the interchanger, or API.

Each signaling protocol need be set up the predetermined main frame-interchanger call control process agreement that comprises one or more fixed news exchanges.Therefore, control the programmable switch execution and keep the necessary exchange incident of communication, each communication switch must be able to be supported the command messages and the related protocol of these particular host-interchangers of squillion.In view of this, each signaling protocol should be associated with the one or more different message set of storage and index in main frame and interchanger.This message set and final main frame-interchanger agreement also depend on concrete telecommunications application program requirement, are suitably to control interchanger to support a desired information content of specific signaling protocol and type such as an application program.

In addition, traditional programmable switch also can be connected between public telephone network and other equipment such as voice notification system one class.Because this equipment can be carried out special-purpose function and directly be connected with public telephone network unintentionally, so they generally do not observe various standard signaling protocols.Therefore, can control programmable switch by following mode, promptly make it to keep with public telephone network and communicate by letter, just must satisfy the API signaling protocol requirement of multiple complexity with the suitable of other equipment that are connected in this interchanger for making the user.Traditional communication switch realizes many specific API message set, to support these diversified requirements.

Because the execution of fixed news and various telecommunications are used and the requirement of signaling protocol, do not have standard interface between host application program and the telecommunications interchanger.This makes is increasing for every specific API agreement of trunk line, cross-line and subscribers feeder development support expense when satisfying host application program requirement and necessary hardware of signaling protocol requirement and software.

In addition, owing to have and be exclusively used in that particular command or data transmit, separation and different API message separately, the telecommunications interchanger is increased characteristic need create and realize one or more additional API message, to support the relevant API agreement between main frame and the interchanger.Be the unique message that realizes that each is new, must to interchanger and main frame costs and time-consuming software modification.

Thereby needed is a standardized A PI messaging protocol with the irrelevant support main frame-interchanger call control process of host application program or signaling protocol requirement.Further, so general API agreement must be defined as enough flexibly and adapt to multiduty, to support now or the telecommunications of being developed is from now on used and the current and following requirement of signaling protocol.

Summary of the invention

The present invention is used to carry out call control process, can be set to satisfy a standardized main frame-interchanger application programming interfaces (API) of telecommunications application and network signaling protocol requirement.This general API comprises one or more general message with the territory able to programme that is used for sending order, state and data between host application program and interchanger.The present invention further comprises a programmatic telecommunication interchanger, and this interchanger provides the ability of the required API agreement of definition to the user, and these agreements are " standard " or self-defining with regard to character, are used to carry out any required function of exchange.

The present invention includes a protocol development environment that makes the user can separate finite state machine for each port definition that interchanger provided.Combine with primitive (Primitives) by a series of basic handling steps that will be called as former subfunction, the latter combines to define needed state machine with state and incident again successively, and each finite state machine can be defined independently.Such state machine can comprise the former subfunction that is configured to produce predetermined message under predetermined condition and comprises predetermined information.Above-mentioned state machine may further include the ability of response status incident, and state event comprises and is configured to provide reception from the general API message of the information of host application program to state machine.

In addition, the present invention can be used as a kind of developing instrument and is used for creating user-defined API agreement, and these agreements have support such as Personal Communications Services (PCS), No. 800/900 business, voice mail, the user-defined standard message that remote sale and other telecommunications are used.The present invention can also be used to controlling or manage multiple communication service in the programmable switch by transmitting general API message, comprises conference telephone, voice record notice, signal tone generation, signal tone identification, call proceeding analysis, speech recognition, voice compression and facsimile coding/decoding.

General API of the present invention also can be used to realize the communication of interchanger inside.For example, the standardized messages of general API can be used for supporting the communication between the inner any software layer of interchanger.

The favourable part of general message structure of the present invention is to give the telecommunications interchanger to add additional call treatment characteristic, and main frame can be introduced these characteristics and need not realize being exclusively used in the API message of the additional certain content of this characteristic.This makes the establishment of User Defined API messaging protocol be not used for the restriction of the particular message of particular characteristics and specific function.

Another advantage of general message structure of the present invention is that it provides necessary public character of standard interface and flexibility for application development.This has reduced the complexity of main frame/interchanger communication interface effectively and has exempted the expense by the interface of many special message institute assembly of supporting.

Another advantage of the present invention is that it provides the ability of using standardized messages to send and receive information to all software layers of interchanger for the user.This has eliminated the burden of the different messages of having to store the performed difference in functionality of the identical or different software layer that is used to manage interchanger in a large number to a great extent.Therefore, the present invention has avoided storing the also big message set of index in the traditional exchange device.

Another advantage of the present invention is the degree that has increased with host interaction, and this can be achieved simply by be introduced in the former subfunction that transmits and receive data in the interchanger everywhere in different process points.

Another advantage of the present invention is that it makes the state machine of the separation that the user can be by creating every kind of signaling protocol of addressing create a plurality of network signaling protocols.General API can be programmed to realize supporting the necessary communication of each specific protocol state machine.Therefore, although interchanger is supported a plurality of signaling protocols, comprise that the message structure of main frame-interchanger interface can remain unchanged.

With reference to accompanying drawing, below structure and the operation of more characteristic of the present invention and advantage and various embodiment of the present invention is described in detail.Among the figure, the same identical or intimate part of reference number indication.In addition, the most left or binary digit of reference number identifies the first figure that occurs of this reference number.

The accompanying drawing summary

The present invention points out in claims in detail.Can understand above and more advantage of the present invention better with reference to following description taken together with the accompanying drawings, in the accompanying drawing:

Fig. 1 is can be by the block diagram of user according to the programmatic telecommunication interchanger of the preferred embodiments of the present invention programming;

Fig. 2 is the figure that describes the software layer that is used for control chart 1 interchanger;

Fig. 3 A and Fig. 3 B have described some concrete properties and the function that is associated with the described software layer of Fig. 2;

Fig. 4 is the block diagram according to the finite state machine development environment of the preferred embodiments of the present invention structure;

Fig. 5 is explanation general PPL incident indication of the present invention and the structure of PPL event request message and the block diagram of content;

Fig. 6 is the block diagram of PPL incident indication acknowledge message of the present invention and PPL event request acknowledge message;

Fig. 7 A and Fig. 7 B are to use general API of the present invention that the state diagram of the finite state machine of call control process to support highly interactive main frame telecommunications application requirements is provided;

Fig. 7 C is the interface schema of the general API of the illustrated call control process of support Fig. 7 A and Fig. 7 B;

Fig. 7 D and Fig. 7 E are the block diagrams of the finite state machine of Fig. 7 A and Fig. 7 B, and in this figure, each sequence of former subfunction is defined as a primitive;

Fig. 7 F and Fig. 7 G are the forms of the corresponding relation of former subfunction, primitive and state among the key diagram 7A-7E;

Fig. 8 A and Fig. 8 B are to use general API of the present invention that the state diagram of the finite state machine of call control process to support limited interactive main frame telecommunications application requirements is provided;

Fig. 8 C is the interface schema of the main frame that call control process produced-interchanger API of illustrating in Fig. 8 A and Fig. 8 B;

Fig. 8 D and Fig. 8 E are the figure of the finite state machine of Fig. 8 A and Fig. 8 B, and in this figure, each sequence of former subfunction is defined as a primitive;

Fig. 8 F and Fig. 8 G are the forms of the corresponding relation of former subfunction, primitive and state among the key diagram 8A-8E;

Fig. 9 is the functional-block diagram that the exemplary process flow process of a PPL incident Indication message is created in explanation;

Figure 10 is the block diagram in the message buffering district that the 4th floor PPL processor is created in the process of the PPL incident Indication message of creating Fig. 9; And

Figure 11 is the functional-block diagram that the exemplary process flow process of a PPL event request message is created in explanation.

Detailed Description Of The Invention

Fig. 1 represents the personal computer (PC) 102 that can buy on the market, and it comprises the 104 and hard disk drives 106 of a PC CPU (CPU) by PC I/O (I/O) bus 108 and 109 interconnection of PC power source bus.PC-AT or its compatible that the preferred International Business of PC102 Machines (IBM) is sold.Also can adopt to have and more many other personal computers of internal memory or stronger CPU than PC-AT.PC102 preferably moves under the application oriented operating system such as DOS or UNIX.

PC102 comprises a cabinet or casing, a built-in motherboard and hard disk drive 106 and other optional components such as floppy disk, modulator-demodulator.PC CPU104 is positioned on the motherboard, and motherboard comprises a series of printed-board receptacles, and other plates or card can insert wherein, thereby are connected with I/O bus 108 and the power bus 109 of PC.

A programmatic telecommunication interchanger 110 places in the PC102.Thereby the groove position that CPU/ matrix card 112 inserts in motherboard is connected to bus 108 and 109.CPU/ matrix card 112 and a numeral (T1) Line cards 114, numeral (E1) Line cards 115,116, baling press card of Digital Signal Processing (DSP) card 117, simulation (general) Line cards 118 and a terminator terminating junctor card 119 are connected to each other by four buses, and these four buses are: High-Level Data Link Control (HDLC) or interprocessor bus 120; Time Division Multiplexing bus 122; Line cards (LC) state/control bus 124; And timing/control bus 126.Battery/ringing voltage bus 128 provides cell voltage (48VDC) and ringing voltage (109VAC) for artificial line an outpost of the tax office 118.Terminator terminating junctor card 119 is used for physics terminating bus 120,122,124,126 and 128.

Line cards 114,115 with 118 and DSP card 116 all be connected and therefrom obtain the basic operation electricity consumption with PC power source bus 109.Although only described a numeral (T1) Line cards 114, numeral (E1) Line cards 115 and an artificial line an outpost of the tax office 118, but should be understood that, the All other routes card that can add any kind, two suffered physical constraints are: the maximum switching capacity of (1) CPU/ matrix card 112, and the physical space in (2) PC102 cabinet.

An external host 130 that can comprise personal computer, work station or other computers of a separation can randomly be connected to CPU/ matrix card 112 by communication channel 132.CPU/ matrix card 112 preferably includes a traditional RS-232 compatibility interface that is used for connecting channel 132.External host 130 preferably moves under application oriented operating system.

If desired, interchanger 110 can be placed on the passive backplane (do not have CPU104 or coil 106), obtains power supply and is controlled by external host 130 from this plate.For example, the present invention can realize on other processing platforms, such as being 08/207 being entitled as extendible telecommunication system (ExpandableTelecommunication System), co-pending patent application, sequence number, the disclosed telecommunications interchanger of expanding in 931, this patent is transferred the possession of the assignee in the application, is incorporated herein by reference in this integral body.

The battery of an outside/ring charger 131 is connected with terminator terminating junctor card 119 by path 133.As an example, charger 131 can comprise the charger that (for example) can buy on market.

Except numeral (E1) Line cards 115, DSP card 116 and baling press card 117, the details of the structure of relevant various cards shown in Figure 1 is at the U.S. Patent number 5 that is entitled as the programmatic telecommunication interchanger (Programmable Telecommunications Switch for PersonalComputer) that is used for personal computer, 321, existing statement in 744, this patent is transferred the possession of the assignee in the application, is incorporated herein by reference in this integral body.Numeral (E1) Line cards 115 preferably adopts the hardware similar to disclosed numeral (T1) Line cards 114 to construct, and the difference in the custom circuit is to allow Line cards 115 terminating E1 cross-lines, rather than the T1 cross-line.

Details about DSP card 116 and baling press card 117 structures, at the U.S. Patent number 5 that is entitled as telecommunications interchanger (Telecommunications Switch withProgrammable Communications Services) with communication service able to programme, 349, existing statement in 579, this patent is transferred the possession of the assignee in the application, is incorporated herein by reference in this integral body.

Fig. 2 is the software hierarchy model that is used to control programmable switch 110 shown in Figure 1.Fig. 2 left-hand column is represented the defined seven layer model of OSI(Open Systems Interconnection) reference model.Five layer models that Fig. 2 right-hand column represents to be used to control interchanger 2 with and with the general corresponding relation of osi model.

Referring now to Fig. 1 and Fig. 2, application layer 5 (general corresponding with the application layer of osi model) expression typically runs on the application software of PC CPU104 or external host 130.The software of application layer 5 can be used to realize the telecommunication service of any needs, as free (800) business, voice mail, automatic call distribution (ACD) etc., does not enumerate one by one at this.Application layer 5 can communicate by any other layer of application programming interfaces of the present invention and programmable switch.When application layer 5 is present in external host 130, the communication on the API managing communication channels 132.When application layer 5 is present in PC CPU104, the call control process communication on the API administration PC I/O bus 108.

Usually, call management layer 104 is corresponding with presentation layer, session layer and transport layer in the osi model, and expression runs on the software of CPU/ matrix card 12.The common interface that call management layer 4 is responsible for carrying out the centralized call processing capacities and is provided a type with the interchanger 102 inner network signaling protocols that use to have nothing to do to application layer 5.Usually, the call management layer 4 execution needed function of call setup subsequently.

Usually, network signaling protocol layer 3 is corresponding with the network layer in the osi model.The represented running software of network signaling protocol layer 3 is in CPU/ matrix card 112, perhaps run on each Line cards of the microprocessor that comprises separately, such as Line cards 114 or 115 or baling press card 117, and be responsible in the band and the control of the procotol level of band outer network signaling monitor and calling and outgoing.

Usually, link layer 2 is corresponding with the data link layer in the osi model.The running software of link layer 2 is in CPU/ matrix card 112, the Line cards that comprises microprocessor separately, DSP card 116 or baling press card 117 (each card comprises the microprocessor of oneself), and is responsible for detecting and the network signal information of physical transfer by network or line interface.

At last, physical layer 1 is corresponding to the physical layer in the osi model.Line cards 114,115 and 118 provides T1, the E1 of physics and the electric interfaces of simulation for respectively interchanger 110.

Fig. 3 A and Fig. 3 B are the every layer of representational characteristic that is provided of software layer 2-5 of Fig. 2 and the tabulation of function.The present invention can be used as a kind of developing instrument and is used to develop appropriate software, to realize any characteristic and the function shown in Fig. 3 A and Fig. 3 B.At U.S. Patent number 5,426, stated at the 2-5 layer and used illustrative example of the present invention that this patent is transferred the possession of in assignee of the present invention, is incorporated herein by reference in this integral body in 694.

Fig. 4 is the overall block-diagram of constructed according to a preferred embodiment of the invention finite state machine development environment, user or user can be created and defines the finite state machine that is used to realize needed telecommunications functions and is controlled by one or more application programs by general API of the present invention.Before this figure of detailed consideration, should provide the definition of some terms earlier.

Such as used in this, the term state relates to a numeral, current " context " of a certain particular channel of this digitized representation or port (context).Defined three class states in a preferred embodiment of the invention: normal, inner with block.Normal condition can be wait state (be SEIZE ACK state, under this state, end further action, take place up to a certain particular event) or stable state (it is in progress promptly to converse).Internal state is used for the condition detection and plays judgement branch effectively.According to the present invention, can stipulate normal and internal state by user or user, definition realizes the finite state machine of required function.Blocked state is produced automatically by the present invention and is used for being connected by the management of channel with the outer resource of plate.

An incident is a numeral, this Digital ID a condition of being accepted by a certain particular state.Data can with an event correlation.

A former subfunction is to carry out such as the function that the such basic task of timer is set.User-defined data can be related with an atom function.Primitive is a predetermined sequence of the former subfunction called when a certain particular event takes place.The user can create or definition primitive from an available atom function library.In a preferred embodiment, each primitive can comprise nearly 20 former subfunctions.

State/event table defines the validity event of a certain particular state and the primitive that is called when the generation of each such incident.In a preferred embodiment, a state/event table can comprise nearly 100 states, and each state comprises nearly 20 incidents.

The primitive that primitive table definition state/event table is used.In a preferred embodiment, a primitive table can comprise nearly 200 primitive.

Protocol definition is the association of various tables, which comprises at least a state/event table and primitive table and is identified by an agreement ID (numeral).

The API protocol definition is the main frame-interchanger control protocol between host application program and the interchanger software layer.

Procedural agreement language (PPL) is the environment able to programme that is used for supervising the network signaling protocol and communication service.

Be assigned to each channel (port) 0 of interchanger such as the represented data block of reference number 40a, 40n ... n.40a comprises the following information relevant with its each self-channel to each data block of 40n: the current state of channel; A pointer that points to active state/event table; The pointer of a sensing activity primitive table; A pointer that points to the state/event table that is distributed; And pointer that points to the primitive table that is distributed.

With regard to channel 0, as dotted line is indicated, the table that the pointed of active state/event table and movable primitive table is represented by reference number 442a, these tables are with to reside agreement 0 related.Active state/the event table that is distributed of channel 0 and the pointed of movable primitive table and dynamically loaded, table that user-defined agreement 1 is related, that represent by reference number 444a.

Existing also, other available agreements are resident agreements 1 ... n (442b, 442c) and the user-defined agreement n+1 that downloads ... m (444b, 444c).That resident agreement 442b-442c represents pre-programmed or " standard " agreement is generally provided with interchanger by manufacturer.On the contrary, user-defined agreement n+1 ... m is created by user or user, and with regard to character, can be complete " self-defining " or " proprietary ".

Layer relies on atom function library 446 and is connected with state machine engine (engine) 448 and provides information for it.State machine engine 448 also is connected with movable primitive list index with active state/event table pointer, receives active state/event table pointer and movable primitive list index with each data block from 440a-440n.And, shown in reference number 450,, layer provides utility program for relying on back-up environment.

The effect of state machine engine 448 is according to each channel of the protocol-driven of being distributed, and the agreement of being distributed is defined by state/event table that is distributed and the primitive table that is distributed.In a single day a validity event of normal condition takes place, and just each entry according to the state/event table that is distributed calls a primitive.The former subfunction that the primitive that state machine engine 448 utilizes 446 execution of atom function library to be called is represented.

State machine engine 448 internal states of why wanting in office will drive and automatically produce suitable blocked state all the time, reach normal condition once more up to channel.At this moment, by finishing dealing with that state machine engine 448 is carried out, take place up to another validity event.

Originally each channel is assigned with a user-defined agreement or an agreement able to programme.This passes through to transmit the API message from application layer 5 to call management layer 4, and call management layer 4 be finished to also sending suitable message according to the 3rd layer that API of the present invention is provided with successively.The state that is distributed/event table pointer and the primitive list index that is distributed point to the agreement of late allocation.Thereby the user can distribute an allowed protocol of wanting by indicating pointer suitable in the data block simply.Adopt this mode, the present invention helps allowing distributing in a plurality of agreements of user's channel by channel from reside in single interchanger an agreement of wanting.

Alternatively, if selected some or all the channel allocation agreements of not giving of user, then default value can preferably be provided, thereby makes each channel that an efficient protocal that is assigned with (for example, one of resident agreement 442a-442c) always be arranged.

The agreement of the active state/event table that provides for state machine engine 448 and the current control channel of pointed of movable primitive table.

It is permanent that the agreement of distributing to a certain particular channel there is no need, as described in detail in conjunction with Fig. 7, can in response to the generation of concrete incident in real time, dynamically change.Further, because the atom function representation basic function that storehouse 446 provides, helping user or user can realize needed change and foundation code not carried out the change of essence agreement, perhaps if possible, does not carry out any change.In addition, for user or user provide the back-up environment utility program, to simplify the exploitation of agreement.These utility programs provide ready-made resource management function (as timer), have simplified greatly and have realized wanting the needed logic state machine of agreement.Because every layer of resource needed can be different, think that each software layer preferably provides different utility programs.

According to the present invention, the call treatment control between other layers of the interchanger 102 that the application layer 5 that generally resides in external host 130 and Fig. 2 are illustrated communicate by letter, manages by the general message of transmitting the general API of the present invention.Specifically, in the preferred embodiment of the general API of the present invention, with a kind of single type of message that is called the PPL event request message, transmit all call control process order and data to telecommunications interchanger (every other software layer) from host application layer (the 5th layer).Similarly, with a kind of single message that is called PPL incident Indication message, transmit all call control process state and data to the host application layer from the telecommunications interchanger.These general API message have optional territory, are the message of unique necessity to keeping call treatment, and are irrelevant with the characteristic that application requirements, network signaling protocol requirement or the current existence of telecommunications interchanger maybe will increase.Programmable switch of the present invention makes the user can define and distribute needed application programming interfaces agreement, and with regard to character, these agreements are " standards " or self-defining, are used to realize adapting to the various functions of exchange of above any requirement.

With reference to 5, one PPL event request message of figure from main frame send to interchanger with startup have optional ICB data, about the host event of a certain PPL assembly.The PPL event request message is unique call control process message of transmitting to interchanger from main frame, and, in a preferred embodiment, have the form of the illustrated message of Fig. 5 500.The PPL event request message comprises some territories and subdomain, is described below.

The PPL event request message comprises a frame byte 502, and it is a constant value, and identifying it is first byte of a frame.

Message-length territory 504 comprises the length of specific PPL event request message.Because general API message of the present invention has the ability that comprises optional territory, the length of message changes, so the message-length territory is necessary.Usually, the value of length field does not comprise frame byte 502.

Type of message territory 506 comprises a constant value, and identifying this particular message is the PPL event request message.The type of message territory of all PPL event request message is fixed.

Sequence number territory 508 is produced, is distributed to a specific numeric identifier of each PPL event request message by host application program.This value is used to distinguish the different PPL event request message that transmits to interchanger from main frame.For example, when the reception of a PPL event request message of host acknowledgement, in its acknowledge message, comprise a sequence number, be associated to identify the state information that is comprised in which PPL event request message and the acknowledge message.

As mentioned above, each PPL component states machine has been assigned with a unique reference number in the interchanger.PPL assembly ID territory 510 is word territories, this domain identifier which PPL assembly of in interchanger, realizing with reference to (reference) of specific PPL event request message 500.

At any given time, the example of a plurality of PPL component states machines can be arranged in the interchanger.For example, in a preferred embodiment, an E1 PPL component states machine distributing to each channel is arranged.Therefore, wherein single E1 card supports among the explanation embodiment of 256 channels the nearly example of 256 E1 PPL component states machines to be arranged, each example and a different channels associated.In order to visit each example of PPL assembly selectively, general API of the present invention provides the ability of carrying out multilevel addressing.Therefore, in case the PPL assembly is identified in PPL assembly ID territory 510, just have an address location territory 514 to be provided, with the reference of sign institute is which example of PPL component states machine.As shown in Figure 5, the PPL event request message provides the ability that comprises any a plurality of address locations territory 514, therefore, and can be simultaneously and a plurality of instance communications of a PPL component states machine.The sum in the address location territory 514 that comprises in PPL event request message provides in address location number territory 512.

For adapting to above mentioned other rank addressing, address location territory 514 comprises many subdomains, is used for further identifying which state machine instance and will receives the PPL event request message.Specifically, provide an address location type field 516, may comprise needed state machine instance or the interchanger classification assembly related with it with reference.Have in the above in the example of an E1 PPL state machine instance, address location type field 516 instruction state machine examples are relevant with channel with which kind of cross-line.Address information subdomain 520 is given in the specific address of each indicated in the address location type field 516 classification assembly.

Because the addressing information that is comprised in the territory 520 changes according to the device type of institute's addressing, the length in AE territory 514 also can change, thereby provides the length in AE territory 514 in length subdomain 518.Can adopt other addressing schemes that are fit to special PPL component states machine and exchanger arrangement, this is conspicuous to persons skilled in the relevant art.Should also be noted that in the superincumbent example,, have a single state machine instance for each channel owing to distributed PPL component states machine separately for each channel.Yet a specific state machine can be set to manage any a plurality of channel, and this also is conspicuous to persons skilled in the relevant art.

Multilevel addressing provides an addressing scheme flexibly for general API PPL event request message.This makes a series of state machine instance that the host application program that adopts single PPL event request message can addressing has a common PPL assembly ID with in institute's particular event of generation in the state machine of addressing to some extent.

Each PPL incident has unique ID of relative each PPL assembly.PPL event id territory 522 is just thought and the related user-defined PPL event id of specific request for interchanger provides an interchanger.Recipient's PPL assembly is mapped to a PPL incident with unique PPL event id, and this incident is unique to this PPL assembly.

Each PPL event request message can also comprise one or more data fields with the form of message control block (ICB).The ICB of each PPL assembly defines according to the communication protocol that software layer and PPL assembly are supported.Thereby, adopt general message able to programme of the present invention can between main frame and interchanger, transmit any signaling information.

Still with reference to Fig. 5, the PPL incident Indication message that PPL assembly will have optional ICB data sends to main frame from interchanger, to report an incident on each port to main frame.PPL incident Indication message is unique call control process message of transmitting to main frame from interchanger, and in a preferred embodiment, the PPL event request message illustrated with Fig. 5 has identical form.Except cited below, the territory of PPL incident Indication message is consistent with the similar territory of PPL event request message discussed above, and has identical functions.

A plurality of examples that a PPL component states machine can be arranged as mentioned above.For PPL incident Indication message, the actual former subfunction that produces PPL incident Indication message of calling of which example of address location territory indication particular state machine.

In PPL incident Indication message, PPL event id territory 522 is special values, causes PPL component states machine to send the generation of the particular event of PPL incident Indication message in its expression interchanger.As mentioned above, this manages with former subfunction, and former subfunction is programmed, and with the generation in response to a particular event, sends specific PPL incident Indication message, and the PPL event id that is comprised in the message is by user program.

To persons skilled in the relevant art, obviously can adopt general program API of the present invention to be provided with and comprise that layer and all information of interlayer communication transmit.For example, the U.S. Patent number 5,426 of Yin Ruing in the above, the exemplary communication described in 694 can be substituted by general API message of the present invention.

The PPL assembly can be certain layer, specific function, special interface, specific protocol or particular channel.This make the 5th layer in main frame the telecommunications application program can as required or necessary every layer of interactive access interchanger, and manage each PPL assembly and no matter where assembly is positioned at.Thereby an application program can be managed any PPL assembly with general api interface.This provides the method for each PPL assembly in uniform, the predictable management interchanger, this method is irrelevant with the rank of just carrying out processing, scope comprises: for example, and from a very detailed signalling analysis to network signal, to the advanced call Route Selection, up to the call manager linkage function.

In a preferred embodiment of the invention, the mode that data were identified and be delivered to main frame comprises the one or more former subfunction that realizes being used for determining in the particular memory location access categorical data, and realizes being used to produce the one or more former subfunction that the data of will be stored before all offer the general PPL incident indication of main frame.Yet those skilled in the art can find that obviously it is a lot of that former subfunction method of transferring data in PPL incident Indication message is set.For example, can in a PPL incident Indication message, transmit the data of particular type with the former subfunction of a separation.

The simplified representation of PPL event request and PPL incident Indication message is described in the expression of Fig. 5 bottom.

With reference to Fig. 6, the telecommunications interchanger responds the PPL event request with the PPL event request response message of the form with message 600.Similarly, host application program responds PPL incident Indication message with PPL incident indication acknowledge message, also has at form illustrated in fig. 6.General acknowledge message 600 comprises a frame byte 602, length byte 604, type of message 606, and sequence number 608, they all carry out with PPL event request message 500 in the corresponding domain identical functions.In addition, status field 610 provides the state information of particular message for the recipient.The simplified representation of describing the message of affirmation of PPL event request and PPL incident indication affirmation is shown among Fig. 6.

Provide two examples that utilize the general API of the present invention to realize mutual speech processing capacity below with reference to Fig. 7 A-8G.First example explanation is used for the general API of management host-interchanger communication when the telecommunications interchanger is carried out mutual voice announcement under the control of highly interactive host application layer 5.The explanation of second example is used for the general API that management host-interchanger is communicated by letter when host application layer 5 and the reciprocation of telecommunications interchanger are limited and function execution when identical.These examples have illustrated that general API adapts to the ability of various application requirements.

In with figure below, state representation is a circle, and the atom function representation is a rectangle frame, and incident is used along the abbreviation that leads to the state outer pathway and represented.Information representation argument or the data related shown in the former subfunction bracket with this function.When being necessary to avoid to obscure, just bottom bracket, provide reference number with other numeral symbols.

The example that Fig. 7 A-7B explanation the present invention is applied to have host application layer 5 desired senior interactive call management layer 4, in this example, the present invention is used to realize an agreement, and this agreement is used for providing the host application judgement in the whole process of calling being carried out mutual VAB voice answer back.

At normal condition NS0, promptly idle condition 702 begins agreement from associated channel (channel 1).In case the 3rd layer of incident takes place, promptly send one and set up message ((50) L4PPLevL3_SETUP_INDICATION) to the 4th layer), then carry out former subfunction af35.As its descriptor was represented, the 4th layer of PPL incident (L4PPLev) received from network signaling protocol layer 3 (L3), and its report has detected a calling (SETUP_INDICATION).Numeral 50 in the bracket of message semantic definition symbol front is PPL event ids that the 4th layer of PPL distributes to this incident.Thereby, when the 4th layer notified when the represented calling of PPL event id 50 is arranged, the PPL component states machine of Fig. 7 A leaves idle condition 702 and carries out former subfunction af35 (704).

Former subfunction af35 (704) operation is to notify this incident to give host application layer (the 5th layer) and to be that incident is distributed a PPL event id 1.Host application program is interpreted as an incoming notifying with this PPL event id (numeral 1).With reference to Fig. 7 C, former subfunction 35 (704) produces a PPL incident Indication message 701, thereby main frame is given in the notice calling.This PPL incident Indication message has following form:

PPL?Event?Ind(L4PPL，ch1，1)

Wherein, PPL assembly ID indicates the 4th layer of PPL assembly (L4PPL), the example of the 4th layer of PPL component states machine that this message is visited is and the related example of channel 1 (ch1), and, PPL event id (1) shows when PPL component states machine has been in idle condition NS0, had received calling message already.

As shown in the figure, related with former subfunction af35 (704) argument has been specified the 4th layer of PPL event id.It should be noted that, more generally say, former subfunction af35 is that a PPL sends the former subfunction of incident Indication message, in the time will sending to the 5th layer in main frame to a PPL incident Indication message, just use this former subfunction, each message has the argument of the unique PPL event id of indication, and this PPL event id is associated with different event.Main frame responds with PPL incident indication acknowledge message 703, and this message has general format:

PPL?Event?Ind?Ack(sequence#，status)

Wherein sequence number (sequence#) is the sequence number that provides in the PPL incident Indication message 701, and status has indicated the state of associated PPL incident Indication message.With regard to this example and following example, PPL incident indication acknowledge message all indicates previous PPL incident Indication message successfully to be received.

Adopt PPL incident Indication message of the present invention after main frame provides incoming notifying at the telecommunications interchanger, the 4th layer of PPL component states machine enters normal condition NS1, it is a wait state 706, and under this state, the 4th layer of PPL assembly waited for the response of host application program to notice.It is 1 PPL event request message 705 (7C with the aid of pictures) that main frame sends one the 5th layer event id, shows that it is just asking interchanger to continue the calling of receiving on the processing channel 1.Message 705 has following form:

PPL?Event?Req(L4PPL，ch1，1)

This message shows the calling that interchanger must responsive channels 1 be received.The 4th layer of PPL component states machine is that 1 PPL event request message is interpreted as an incident with the PPL event id.As Fig. 7 A was illustrated, the 4th layer of PPL component states machine was that the PPL event request message of receiving is distributed unique PPL event id 501 of one the 4th layer, shows that one the 5th layer PPL event request (having PPL event id 1) takes place.

As the response of PPL incident 501, the 4th layer PPL component states machine is carried out 5 former subfunctions: former subfunction af60 (708), former subfunction af62 (710), former subfunction af140 (712), former subfunction af212 (714) and former subfunction af50 (716).Former subfunction af60 is the former subfunction that produces general PPL event request acknowledge message according to the present invention.When a PPL assembly of interchanger will acknowledge receipt of a PPL event request message, just can use this former subfunction af60.A kind of affirmation state that argument 16 expression PPL event request message are successfully received.Former subfunction af60 (708) produces PPL event request acknowledge message 707, and this message has identical general format with above-described PPL incident indication acknowledge message.PPL event request acknowledge message 707 shows that top calling message is successfully received.

Former subfunction af62 (710) and former subfunction af140 (712) be respectively applied for to the 3rd layer send connection message (answering call) thus and send message and be interactive digital trail (collection) distribution DSP resource.Former subfunction af212 (714) sends out an open notification (Opening announcement) to caller.As shown in the figure, there are two arguments (argument) to give af212: notice ID and notice control option.Af212 (714) is selected to send out open notification.Be performed so that timer to be set according to former subfunction af212 (714) the former subfunction af50 (716) that enters that sends out public notice, make it wait for that one period seclected time is to receive the calling numeral.As shown in the figure, first argument shows that the multipurpose timer that is used to carry out this function is a timer 1.Second argument shows the number of the 1000ms unit that timer will be counted.Here, second argument is 10, shows that timer 1 was with timing 10 seconds.Therefore, former subfunction af50 (716) counted timer 1 in the time of 10 seconds full, and during this period, the 4th layer of PPL assembly enters normal condition S2, and it is a wait state 718, and under this state, the PPL state machine is waited for the numeral that will detect at channel 1.

Timing is full if next PPL incident is timer 1 ((191) PPLev TIMER1), shows and does not receive numeral (digit) in 10 seconds, and then former subfunction af35 (720) is performed with the notice main frame and does not receive numeral.The 4th layer of PPL assembly is PPL event id 191 of PPLevTIMER1 distribution of messages of receiving.As mentioned above, former subfunction 35 produces PPL incident Indication message of the present invention.But,, comprise PPL event id 4 in the PPL incident Indication message here, show and on selected channel, detect the numeral failure.Therefore, the form of this PPL incident Indication message is:

PPL?Event?Ind(L4PPL，ch1，4)

This message represents when the 4th layer of PPL assembly is in wait state 718, with channel that channel 1 example of the 4th layer of PPL assembly is associated on do not detect numeral.

Since the interface schematic view illustrating of Fig. 7 C handle the general API agreement that is associated with the digital received of success and follow-up call notification, so the not explanation in Fig. 7 C of this message.Then, by carrying out general API of the present invention, handle and proceed with a series of unshowned former subfunctions under the control of host application program, wherein, in response to the failure that detects numeral on the channel 1, the telecommunications interchanger is carried out various functions.

If next when the 4th layer of PPL component states machine is in wait state 718 to want event be to receive to show at channel 1 and detect digital message, ((66) L4PPLevDSP_RESULT_DIGITS) then carries out former subfunction af47 (722).Distribute a unique PPL event id 66 for the reception of this message.Therefore, when the 4th layer notified when having received numeral, the 4th layer of PPL component states machine leaves wait state S2 (718) and carries out former subfunction af47 (722).As the argument of former subfunction was indicated, former subfunction af47 quit work the selected PPL multipurpose of former subfunction af50 (716) timer (timer 1).Former subfunction af53 (724) with the stored digital that receives in selected general register.Here, af53 (724) with the stored digital that receives in general register 1.

According to the present invention, former subfunction af36 (726) is a former subfunction that is configured to send the PPL incident Indication message of a content (argument 2) with selected general register and a PPL event id (argument 1).Here, former subfunction af36 (726) is that the form of 2 PPL incident Indication message 709 sends to the 5th layer of host application layer with event id with the content of general register 1.The form of PPL incident Indication message 709 is:

PPL?Event?Ind(L4PPL，ch1，2，digit)

Wherein, L4PPL is PPL assembly ID, and ch1 is an address location, the 2nd, and the PPL event id, and " digit " is the numeral of being received.This PPL incident Indication message has illustrated that as an example general API of the present invention adopts the ability of single general PPL incident Indication message form transmission data and order.Main frame is replied with PPL incident indication acknowledge message 711, and expression PPL incident Indication message 709 is successfully received.Then, carry out former subfunction af147 (728), thereby disconnect being connected of DTMP receiver and channel 1 to cancel digital received.

The 4th layer of PPL component states machine S4 that gets the hang of then, promptly wait state 730, and wherein, the 4th layer of PPL component states machine do not have waits for termly how the 4th layer of PPL component states machine of host application layer 5 indication replys the numeral that is received.Shown in Fig. 7 B, in the embodiment of demonstration, host application program can send to the 4th layer of PPL assembly has reply one of different with 506 three kinds of PPL event id 504,505.

If it is 4 PPL event request message 713 that the 4th layer of PPL component states machine receives the PPL event id, ((504) PPLevL5_EVENT_REQ_4), then be unique PPL event id 504 that it distributes the 4th layer, showing the 5th layer, to have provided a PPL event id be 4 PPL event request message.The 4th layer of PPL component states machine of PPL event request message 711 orders sends a specific exhalation notice.The form of PPL event request message 713 is:

PPL?Event?Req(L4PPL，ch1，4)

PPL assembly ID wherein shows that this message is is target with the 4th layer PPL assembly (L4PPL), address location shows that the channel of communicating by letter is channel 1 (ch1), and PPL event id (4) shows that a specific additional exhalation notice will send on the channel that is identified.

As the response of PPL incident 504, carry out 4 former subfunctions: former subfunction af60 (732), former subfunction af140 (734), former subfunction af212 (736) and former subfunction af50 (738) for the 4th layer.Former subfunction af60 (732) is the former subfunction that produces general PPL event request acknowledge message according to the present invention.As mentioned above, when a PPL assembly will be confirmed the reception of a PPL event request message, just use former subfunction af60.The affirmation state that argument 16 expression PPL event request message are successfully received.This former subfunction produces the PPL event request acknowledge message of above-mentioned general format.

Former subfunction af140 (734) is used for being used in 1 minute to channel the DSP resource of interactive digital trail.Former subfunction af212 (736) sends out additional exhalation notice on channel 1.It is 3 that first argument indicates notice ID; There is not option selected according to second argument.Former subfunction af50 (738) is used to be provided with timer 1, and the time of waiting for 10 seconds is to receive the incoming call numeral.The PPL assembly gets the hang of S5 (740) to wait for the incoming call numeral in cycle seclected time.

The execution of former subfunction af212 (736) causes sending out a notice to caller.As shown in the figure, af212 has two arguments: notice ID and notice control option.Former subfunction af212 (736) is selected to be used for sending out the notice of breathing out.

The former subfunction af50 (738) that enters as the response that former subfunction af212 (736) is sent out public notice is used to be provided with timer, receives the incoming call numeral to wait in the selected time.According to argument, it is full that former subfunction af212 (736) is set to timing in 10 seconds with timer 1.At this moment in the cycle, the 4th layer of PPL component states machine S5 that gets the hang of, i.e. wait state 740, state machine is waited under this state and is received numeral.

In the embodiment of this demonstration, main frame can be that 5 or 6 PPL event request is alternately replied with the PPL event id, shows other functions that will carry out not express with the PPL assembly to the 4th layer.In both cases, PPL component states machine is carried out former subfunction af60 (being respectively 731,733), shows that PPL event request message separately is successfully received.

If next incident is timer 1 timing full ((191) PPLevTIMER1), then agreement is carried out former subfunction af35 once more.Carry out former subfunction af35 (742) and in preset time, do not receive numeral with the notice main frame.As mentioned above, former subfunction af35 is configured to produce PPL incident Indication message according to the present invention.Here, comprise PPL event id 4 in the PPL incident Indication message that former subfunction af35 (742) produces, show on selected channel, to receive the numeral failure.The form of this PPL incident Indication message is:

PPL?Event?Ind(L4PPL，ch1，4)

The 4th layer of PPL component instance that it shows channel 1 do not detect numeral at the appointed time.Because the interface schematic view illustrating of Fig. 7 C is the API agreement that is associated with the successful processing of call notification sequence, so this message does not illustrate in Fig. 7 C.

If next PPL incident is to show timer 1 timing full ((191) PPLevTIMER1) that does not receive numeral in 10 second cycle, then former subfunction af35 (742) is performed, so that having the PPL event id by generation is 4 PPL incident Indication message of the present invention, the notice main frame does not receive numeral, and its form is:

PPL?Event?Ind(L4PPL，ch1，4)

For the above reason that provides, this message is not shown among Fig. 7 C.Then, by carrying out general API of the present invention, with a series of former subfunctions of not expressing processing is proceeded under host application program control, wherein, in response to detecting the numeral failure on the channel 1, the telecommunications interchanger is carried out various functions.

If the next incident that takes place when the 4th layer PPL component states machine is in wait digital state 740 is to receive to show the message that receives numeral on channel 1, ((66) L4PPLevDSP_RESULT_DIGITS), then former subfunction af47 (744), af53 (746) and af36 (748) are carried out respectively, so that front selected PPL multipurpose timer (timer 1) quits work, the stored digital that receives in selected general register, and is sent a PPL incident Indication message 717.

According to the present invention, former subfunction af36 (748) be configured to send have general register 1 content, former subfunction that the PPL event id is 3 PPL incident Indication message.Here, former subfunction af36 (748) is that the form of 3 PPL incident Indication message 717 sends to the content of general register 1 the 5th layer host application program with event id.The form of PPL incident Indication message 717 is:

PPL?Event?Ind(L4PPL，ch1，3，digit)

Wherein, I4PPL is PPL assembly ID, and ch1 is an address location, the 3rd, and the PPL event id, and " digit " is the numeral of being received.This event id shows, the numeral of returning is to be the response of the former subfunction af212 of 3 exhalation notice to the ID that gives notice.Main frame is replied with a PPL incident indication acknowledge message 719 that shows that PPL incident Indication message 711 is successfully received.

Referring now to Fig. 7 D, can see that each the atom sequence of function shown in Fig. 7 A-7B has been defined as a primitive.In fact, each primitive provides the method for simplifying of the atom sequence of function wanted that a sign will call.The form of Fig. 7 D has been listed the atom sequence of function in the tabulation mode for each primitive.

Fig. 7 E is the state/event table that concerns between state, incident and the primitive among definition Fig. 7 D.According to a preferred embodiment of the invention, wish that the user who creates Fig. 7 agreement that A-7B describes only need define the form shown in Figure 76 D and the 7E for one.Then, from main process equipment those forms are downloaded to interchanger 102 (Fig. 1) by a series of message.

With reference to Fig. 8 A-8G, second example of the general API of the present invention that is configured to management host-interchanger communication has been described.In this example, host application layer 5 when carrying out these functions and the reciprocation of telecommunications interchanger be limited.Specifically, the telecommunications interchanger is configured to the numeral that automatic-answering back device enters.Opposite with previous example, the 4th layer PPL state machine comprises the internal state of replying the inside prompting that numeral produced during in groups.The former subfunction of the main frame generation PPL incident Indication message of the reception numeral by providing has been provided in these aspects of interchanger, and follow-up wait state, and wherein interchanger waits for that main frame provides PL event request message to it.

Fig. 8 A-8B has illustrated that the present invention is applied to have an example of host application layer 5 desired limited interactive call management layer 4, and this example is realized an agreement, and being used for provides limited host application judgement calling being carried out mutual VAB voice answer back process.

At normal condition S0, promptly idle condition 702 begins agreement from associated channel (channel 1).In case the 3rd layer of incident takes place, promptly send one and set up message ((50) L4PPLevL3_SETUP_INDICATION) to the 4th layer), then the PPL component states machine among Fig. 8 A leaves idle condition 802 and carries out former subfunction af35 (804).

Former subfunction af35 (804) operation is given host application layer (the 5th layer) with notification event, and distributes a PPL event id 1 for this incident.Host application program is interpreted as an incoming notifying with this PPL event id value 1.With reference to Fig. 8 C, former subfunction 35 (804) produces a PPL incident Indication message 801, thereby the notice main frame has calling.This PPL incident Indication message has identical form with PPL incident Indication message 701, and it shows that when the 4th layer of PPL component states machine was in idle condition, channel 1 example of the 4th layer of PPL component states machine of this message institute addressing received an incoming call message.

Main frame is replied with a PPL incident indication acknowledge message 702 with above-mentioned general format, shows that previous PL incident Indication message is successfully received.

Adopt PPL incident Indication message of the present invention after main frame provides incoming notifying at the telecommunications interchanger, the 4th layer of PPL component states machine enters normal condition S1, be wait state 706, under this state, the 4th layer of PPL assembly waited for the response of host application program to this notice.It is 1 the 5th layer of PPL event request message 705 that main frame sends an event id, shows that it is just asking interchanger to continue the calling of receiving on the processing channel 1.This message has above-described form, and it shows at channel 1 has received the incoming call message of the 4th layer of PPL component instance and the 4th layer PPL component states machine has been in idle condition.

The reception of this PPL event request message is identified as a PPL incident and is assigned with the 4th a layer of unique PPL event id 501 that shows that the 5th layer of PPL event request (1) taken place by the 4th layer PPL component states machine.

As the response of PPL incident 501, the 4th layer PPL component states machine is carried out 5 former subfunctions: former subfunction af60 (808), former subfunction af62 (810), former subfunction af140 (812), former subfunction af212 (814) and former subfunction af50 (816).As mentioned above, when the PPL assembly will acknowledge receipt of a PPL event request message, former subfunction af60 was used.A kind of affirmation state that argument 16 expression PPL event request message are successfully received.This former subfunction af60 (808) produces PPL event request acknowledge message 807, and this message has identical general format with above-described PPL incident indication acknowledge message.PPL event request acknowledge message 807 shows that top incoming call message is successfully received.

Former subfunction af62 (810), af140 (812), af212 (814) and af50 (816) have identical functions with top with reference to the described similar former subfunction of Fig. 7 A.Former subfunction af50 (816) makes timer 1 timing full, and during this period, the 4th layer of PPL assembly enters normal condition S2, and promptly wait state 818, and under this state, the PPL state machine is waited for will be in the numeral of channel 1 detection.

As top example, if next incident is timer 1 timing full ((191) PPLevTIMER1), shows in selected latent period and do not receive numeral, then carry out former subfunction af35 (820).

If the next incident that takes place when the 4th layer of PPL component states machine is in wait state 818 is to receive to show the message that detects numeral at channel 1, ((66) L4PPLevDSP_RESULT_DIGITS) then carries out former subfunction af47 (822), af53 (824) and af47 (828).These former subfunctions are carried out and top function with reference to the described similar atom functional similarity of Fig. 7 A-7B.It should be noted that, be not called with the similar former subfunction of af36 (726).Therefore, the numeral that is received is not provided for the host application layer.

Former subfunction af28 (829) is performed, and is being used for the value that former subfunction af63 (824) stores the numeral that digital general register is stored of being received with test.The 4th layer of PPL component states machine enters internal state IS3, and promptly test mode 830, and be under this state, that the test of the 4th layer of PPL component states machine receives and be stored in digital value in the general register 1.Shown in Fig. 7 B, in the embodiment of demonstration, tested numeral has any value of three kinds of different values, and every kind of generation has an internal event of PPL event id 200,201 and 202.

If PPL event id is 0 PPL internal event message ((200) PPLevINT_EVENT_0) is provided for the 4th layer PPL component states machine, then the 4th layer PPL component states machine for its unique PPL event id 200 that distributes one the 4th layer to show that receiving a PPL event id is 0 internal event.

As replying of PPL incident 200, the 4th layer PPL component states machine is carried out 3 former subfunction: af140 (834), af212 (836) and former subfunction af50 (838), and each former subfunction is carried out and top function with reference to Fig. 7 A and the described similar atom functional similarity of 7B.It should be noted that, because interchanger oneself test incoming call numeral, rather than wait for the PPL event request message that main frame produced, so be not performed with the similar former subfunction of af60 (732).Thereby, do not need to produce yet and confirm.

Then, the 4th layer of PPL component states machine enters normal condition NS4, and promptly wait state 840, and state machine is waited for the numeral that will receive once more under this state.

If do not receive numeral, next incident is timer 1 timing full ((191) PPLevTIMER1), and then agreement is carried out former subfunction af35 (842), does not receive numeral with the notice main frame at the appointed time.Then, by carrying out general API of the present invention, with a series of former subfunctions of not expressing processing is proceeded under host application program control, wherein, as the response that detects the numeral failure at channel 1, the telecommunications interchanger is carried out various functions.

If when the 4th layer of PPL component states machine is in wait digital state 840, the next incident that takes place is to receive to show the message that detects numeral at channel 1, ((66) L4PPLevDSP_RESULT_DIGITS) then carries out former subfunction af147 (844), af53 (846).These former subfunctions are carried out and top similar function with reference to Fig. 7 A and the described similar former subfunction of 7B.Further, former subfunction af28 (847) is performed, with second value that receive numeral of test storage in general register 1.Be not performed with the similar function of former subfunction af36 (748), thereby, do not provide PPL incident Indication message to main frame.

Referring now to Fig. 8 D-8E, can see that each the atom sequence of function shown in Fig. 8 A-8B has been defined as a primitive.In fact, each primitive provides a sign to call the method for simplifying of the atom sequence of function wanted.The form of Fig. 8 F has been listed the atom sequence of function in the tabulation mode for each primitive.

Fig. 8 F is the state/event table that concerns between state, incident and the primitive among definition Fig. 8 D.According to a preferred embodiment of the invention, wish that the user who creates Fig. 8 agreement that A-8B describes only need define the form shown in Fig. 8 D and the 8E for one.Then, from main process equipment those forms are downloaded to interchanger 102 (Fig. 1) by a series of primitive.

Be performed with reference to the part of 4 layers of PPL assembly 901 of Fig. 9-11, the as the 4th layer of PPL processor 902.As mentioned above, a plurality of examples of a PPL assembly can move simultaneously, and each example has an associated state machine and form.All examples of the 4th layer of PPL assembly 901 are carried out on PPL state machine engine 1104.The 4th layer of PPL processor 902 also comprises the 4th a layer of PPL message handling device 1102 that is used to receive and handle inner PPL event request message 1106.The PPL assembly that can comprise arbitrary number such as each PPL processor of the 4th layer of PPL processor 902.In the example embodiment that Fig. 9 and Figure 11 represent, the 4th layer of PPL processor 902 comprises single the 4th layer of PPL assembly 901.

Fig. 9 illustrates about calling and carry out former subfunction to create the process flow process of a PPL incident Indication message.In order to demonstrate, Fig. 9 illustrates the performed function of processing about the former subfunction af35 (704) of No. 1 primitive (750) of creating PPL incident Indication message 701.Former subfunction af35 (704) is the part of the 4th layer of PPL assembly 901.

In above-mentioned illustrative embodiment, the 4th layer of PPL processor 902 is arranged in CPU/ matrix card 112, and calls former subfunction according to state/event table and primitive table, the various functions of the function of being discussed with reference to the call management layer 4 of figure 2 above comprising with execution.As mentioned above, call management layer 4 is responsible for carrying out the centralized call processing capacities and is provided a common interface for application layer 5.

In a preferred embodiment of the invention, the 4th layer of function that PPL processor 902 is finished be can be from Integrated Systems, Inc., and Santa Clara, California, USA has openly bought, and is called on the proprietary operating systems of PSOS to realize.Yet as those skilled in the relevant art institute was conspicuous, the present invention can realize with any well-known software program and any present or later software language of developing.

Usually, the 4th layer of PPL processor 902 calls the former subfunction of the internal representation that produces PPL incident Indication message.In order to be translated as the PPL incident Indication message of the general API of the present invention, inside story is passed to the communication processor 906 that also is arranged in CPU/ matrix card 112.

Shown in above-mentioned primitive table 780, when the 4th layer of PPL processor 902 carried out primitive of PPL component states machine, it called each former subfunction related with this primitive.In the example of being discussed with reference to figure 7A and Fig. 7 B, former subfunction af35 (704) is the included unique former subfunction of No. 1 primitive (750) in the above.As mentioned above, former subfunction 35 is that a PPL transmission incident is indicated former subfunction, whenever will just using former subfunction af35 when main frame sends a PPL incident indication, has the generation that shows different event of the former subfunction of different PPL event ids at every turn.

Each of some functions described below is carried out by the 4th layer of former subfunction af35 of PPL (704), sends the PPL incident Indication message 701 of the 5th layer of host application program to establishment.With reference to Figure 10, the 4th layer of PPL processor 902 distributes a message buffer 1050 with " additional (the attach) " internal representation to the PPL incident Indication message 904 that is produced by former subfunction af35 (704).PSOS operating system is come the necessary information of storage creation PPL incident Indication message 701 with the message buffer.When the message buffer is assigned with, obtain a pointer that points to this buffering area by PSOS operating system.

In case the message buffer is assigned with, purpose and ID territory, source 1052,1054 just are loaded.The content in these two territories is by the relative position decision of transmission and receiving element.Except make the PPL assembly can with the layer 5 interapplication communications that is positioned at main frame, general API of the present invention may be implemented as the communication between any two examples of any PPL assembly of management in identical or different PPL processor.

When general API be used for being positioned at or the PPL assembly of " being under the jurisdiction of " identical PPL processor between when realizing communication, source and destination ID territory is loaded into PPL assembly ID.Otherwise source and destination ID territory is loaded into the processor virtual ID, and type of message territory 1058 is used for message is sent to the suitable example of the PPL assembly of wanting that is positioned at purpose PPL processor by purpose PPL assembly or application program.

The 4th layer of PPL processor 902 PPL event id of also packing in the associated domain 1056 of message buffer, this event id is identified and is offered former subfunction af35 (704) in PPL primitive table 780.In the illustrated example of Fig. 7, former subfunction af35 (704) shows and detects a calling and be assigned with PPL event id 1 under idle condition S0.

If there is the ICB data field of trailing 1064, its number of then in ICB counting territory 1062, packing into.

The 4th layer of PPL processor 902 sends data buffer zone 1050 to PPL incident Indication message 904.This finishes by calling a function, and this function provides a pointer that points to data buffer zone 1050 to communication processor 906, thereby the buffering area 1050 that is distributed is appended in the PPL incident Indication message 904.906 pairs of API message reformattings of the present invention of communication processor are become the form shown in Figure 5 that sends to host application program by PPL processor 902 employed internal representations.Communication processor 906 is carried out the performed typical translating operation of well-known Message Processing communication processor, and this is considered to well-known in the art.Then, communication processor sends to the application program that is arranged in host computer 130 by api interface 908 with PPL incident Indication message 701.

With the above-mentioned scheme relevant of following pseudo-representation with the 4th layer of PPL processor 902.Can imagine that this pseudo-code can be used for such as C, any suitable language of C++ or PASCAL produces source code of the present invention:

1.allocate?psos?msg?data?buffer(ppl_data_buff)；

2.psos_msg.ppl_component＝L4PPL；

3.psos_msg.event_id＝event_id；

4.psos-msg.destination＝HOST；

5.psos_msg.source＝L4PPL；

6.psos_msg.timeslot_addr＝CHANNEL?1；

7.l4ppl_send_msg(psos_msg，comm?queue)；

Figure 11 has illustrated with the reception of PPL event request message and has handled relevant process flow process.In order to demonstrate, Figure 11 has illustrated the processing function associated with the PPL event request message 705 that is received at wait state S1 (706), shown in primitive table 780, calls the former subfunction of primitive 2.

The operation that communication processor 1006 is carried out is with above opposite at the performed operation of PPL incident Indication message.That is to say that communication processor 1006 receives the PPL event request message 705 of API version and is translated into inner PSOS PPL event request message 1106 at API 1008.Communication processor 1006 sends PPL event request message 1106 to the 4th layer of PPL processor 1002.The 4th layer of PPL message handling device 1102 receives and handles inner PPL event request message 1106, and produces the 4th a layer of different PPL incident that is used for the 4th layer of PPL state machine engine 1104.

The 4th layer of PPL message handling device 1102 be by adding the 5th layer of event request base value 500 in the PPL event id, the PPL event id 522 of message 705 is converted to the 4th layer the unique PPL event id that is used for the 4th layer of PPL state machine 1104.Thereby in the embodiment of demonstration, the 4th layer of PPL message handling device 1102 be the PPL event id 1 and base value 500 additions of PPL event request message, thereby produced unique PPL event id 501 of the 4th layer.

In case the PPL event request message is mapped as the 4th a layer of unique PPL event id, just derive the pointer of the PPL data of selected channel according to the address location value in the message that comprises logic span (Span) and channel id.In other words, the 4th layer of PPL message handling device 1102 is converted to physical address with logical address, i.e. physical slot by time in the interchanger 102.Then call the PPL state machine engine, generally call out as function, this calls with the channel index of PPL component instance data block and and point to and finishes from the pointer of the related data block of the PPL event request message 1106 of communication processor 1006 receptions.

The 4th layer of PPL component states power traction held up 1104 pairs of the 4th layer of unique PPL event ids and handled, and searches this PPL event id of current state in state/event table 790.If find a match event, the primitive that state machine engine 1104 calls in state/event table to be identified retrieves the former subfunction related with primitive ID from primitive table 780.

Therefore, in the illustrated embodiment, the 4th layer of PPL component states power traction held up 1104 and handled PPL incidents 501, searches the PPL event id 501 of current state S1 (706) and call and No. 2 related former subfunctions of primitive in state/event table 790.After having handled all former subfunction related with primitive 2, PPL state machine engine 1104 enters indicated state in the 4th layer of PPL state/event table 790.

Desired as the embodiment of the invention, the pseudo-code of the 4th layer of PPL message handling device 1102 discloses as follows: 1.ppl_event=psos_msg.ppl_data_buff ^Ppl_event+ppl_L5_event_req_base2.ppl_chan_ptr=ppl_data[p sos_msg.hdr.timeslot_addr] and 3.ppl_stmch (ppl_chan_ptr, ppl_event, psos.msg)

Should be understood that embodiments of the invention can use hardware, software or software and hardware combining to realize.In such embodiments, realize various assemblies and step, to carry out function of the present invention with hardware and/or software.In this embodiment of the present invention, can use any current computer software language and/or nextport hardware component NextPort available or exploitation in the future.Especially, above-mentioned pseudo-code may be particularly useful to creating the software implementation example.

Although with reference to its preferred embodiment the present invention has been carried out specific description and description, those skilled in the art will be appreciated that, can carry out various changes in form and details and do not deviate from design of the present invention and scope.Further, used term and words and phrases are as describing rather than restriction vocabulary and using, and when using these terms and words and phrases, be not intended to get rid of the equivalent terms and the words and phrases of illustrated and described characteristic or its part, but recognize that it is possible carrying out various modifications in the scope of claim of the present invention.

Claims (99)

1. telecommunication system comprises:

A main process equipment;

A programmatic telecommunication interchanger that is connected and communicates and reply with described main process equipment is used to carry out the relevant call-handling capability of setting up with the various interchannel of a plurality of channels of communication port;

One has the universal applications program interface (API) that is used for the standard message of communicating by letter between described main process equipment and described telecommunications interchanger.

2. the system of claim 1 is characterized in that, wherein said general API comprises:

A single type of message that is called protocol language able to programme (PPL) event request message is used for transmitting all call control process order and data from described main process equipment to described telecommunications interchanger; And

A single type of message that is called PPL incident Indication message is used for transmitting all call control process state and data from described telecommunications interchanger to described main process equipment.

3. the system of claim 2 is characterized in that, wherein said telecommunications interchanger further comprises one or more examples of one or more finite state machines, and each described one or more finite state machine is represented comprising in the lump of described one or more agreement,

One or more storehouses, each storehouse comprises one or more predefined functions;

One or more predetermined logic states;

The scheduled event that at least one is associated with each described one or more predetermined logic state, each described at least one scheduled event with respect to each described one or more PPL event component state machine by unique identification; And

Wherein in a single day one of described one or more scheduled events take place, and just call a predetermined primitive that is associated with this event, and described predetermined primitive comprises a predetermined sequence of one or more described predefined functions.

4. the system of claim 3 is characterized in that, wherein

Described interchanger further comprises one or more state machine engines,

Wherein each described one or more state machine is configured to be explained (interprete) by one or more state machine engine.

5. the system of claim 3 is characterized in that, wherein said PPL event request message comprises:

Which described one or more state machine a PPL assembly ID is used to identify specific PPL event request message with reference to;

One or more address locations, each address location identify one of described one or more examples of the described state machine that described PPL assembly ID territory identified; And

A user-defined PPL event id is represented a dependent event of described at least one scheduled event that a particular state machine that is identified with described PPL assembly ID territory is associated.

6. the system of claim 5 is characterized in that, wherein said PPL event request message further comprises:

An address location type that is associated with described address location is used for the assembly with reference to the described telecommunications interchanger that is associated with the described relevant described state machine instance that address location identified; And

The component address of each described telecommunications interchanger assembly that is identified by described address location type.

7. the system of claim 5 is characterized in that, wherein said PPL event request message further comprises:

One or more data fields that are associated with each described one or more state machine are used for transmitting call control process information from described main process equipment to described telecommunications interchanger.

8. the system of claim 3 is characterized in that, wherein said PPL incident indication information comprises:

Which described one or more state machine a PPL assembly ID is used to identify specific PPL incident Indication message with reference to;

One or more address locations, one of described one or more examples of the described state machine of the function of the described PPL incident Indication message of the modulated usefulness generation of each address location sign; And

A user-defined PPL event id is illustrated in the generation of a concrete incident of at least one incident described in the described telecommunications interchanger, and this causes producing a specific PPL incident Indication message by described state machine.

9. the system of claim 8, it is characterized in that, wherein each described PPL incident Indication message is produced by one of described one or more functions, this function is configured to send PPL incident Indication message in response to the generation of a particular event, and wherein each described one or more address locations territory comprises:

An address location type is used for the PPL assembly with reference to the described telecommunications interchanger that is associated with described state machine instance that described one or more address location is identified; And

The PPL component address of each described PPL assembly that is identified by described address location type.

10. the system of claim 8 is characterized in that, wherein said PPL incident Indication message further comprises:

One or more and the related data field of each described one or more state machine are used for transmitting call control process information from described main process equipment to described telecommunications interchanger.

11. a telecommunication system comprises:

A main process equipment;

A programmatic telecommunication interchanger that is connected and communicates and reply with described main process equipment is used to carry out the relevant call-handling capability of setting up with the various interchannel of a plurality of channels of communication port; And

Adopt general programmable application programming interfaces (API) to finish communicating devices between described interchanger and described main frame, described general programmable application programming interfaces are included in the standardized messages of the information that transmits between described main frame and the interchanger.

12. the system of claim 11 is characterized in that, wherein said API can be configured to satisfy the requirement of telecommunications application and network signaling protocol.

13. the system of claim 11 is characterized in that, wherein said API comprises:

The first predetermined message format is used for from described main process equipment all message to described telecommunications interchanger transmission call control process information; And

The second predetermined message format is used for from described telecommunications interchanger all message to described main process equipment transmission call control process information.

14. the system of claim 13 is characterized in that, wherein said telecommunications interchanger further comprises:

One or more protocol language able to programme (PPL) component states machine, each expression is used to one of described one or more agreements of carrying out described call-handling capability, and described one or more state machines are replied the related scheduled event of one or more and described state machine.

15. the system of claim 14 is characterized in that, wherein

Described interchanger further comprises one or more state machine engines, and wherein

Each described one or more finite state machine comprises the storehouse of one or more predefined functions,

Wherein each described one or more finite state machine is configured to be explained by one of described one or more state machine engines.

16. the system of claim 15 is characterized in that, wherein each described one or more state machine by the function of a state/event table and a primitive table in conjunction with define, wherein

Described state/event table has defined one of one or more predetermined logic states and described at least one or more scheduled events related with each described one or more predetermined logic state, and wherein

Described primitive table definition one or more primitive, each primitive comprises the predetermined sequence of one or more described predefined functions, in case one of described one or more scheduled events take place, just calls a predetermined primitive that event correlation takes place therewith.

17. the system of claim 14 is characterized in that, wherein said first message format is adjustable length PPL event request message, and it comprises:

Which described one or more PPL component states machine a PPL assembly ID is used to identify specific PPL event request message with reference to.

18. the system of claim 14 is characterized in that, wherein said telecommunications interchanger further comprises:

One or more examples of each described one or more PPL component states machine.

19. the system of claim 18 is characterized in that, wherein said first message format is adjustable length PPL event request message, and it comprises:

Which described one or more PPL component states machine a PPL assembly ID identifies specific PPL event request message with reference to; And

One or more address locations, each address location identifies one of described one or more examples of the described PPL component states machine that is identified by described PPL assembly ID.

20. the system of claim 19 is characterized in that, wherein each described address location comprises:

An address location type is used for the assembly with reference to the related described telecommunications interchanger of the described state machine instance that is identified with described one or more address location; And

PPL component address information is used to each to provide specific address by each described PPL assembly that described one or more address location identified.

21. the interchanger of claim 18 is characterized in that, wherein said PPL event request message comprises programmable variable addressing scheme, with desired one or more examples of described at least one example of each described a plurality of PPL component states machine of addressing.

22. the system of claim 19 is characterized in that, wherein

Each described one or more incident relatively each described one or more PPL component states machine by unique identification, and wherein,

Described PPL event request message further comprises a PPL event id territory, and this territory comprises a user-defined event id, represents the unique related incident of specific PPL component states machine that is identified with described PPL assembly ID territory.

23. the system of claim 22 is characterized in that, wherein said PPL event request message further comprises:

One or more data fields with the machine-operated connection of each described one or more PPL component states are used for transmitting call control process information from described main frame to described interchanger.

24. the system of claim 14 is characterized in that, the wherein said second predetermined message format is adjustable length PPL incident Indication message, and it comprises:

Which described one or more PPL component states machine a PPL assembly ID is used to identify specific PPL incident Indication message with reference to.

25. the system of claim 18 is characterized in that, wherein said PPL incident Indication message comprises programmable variable addressing scheme, with desired one or more examples of described at least one example of each described a plurality of PPL component states machine of addressing.

26. the system of claim 18 is characterized in that, wherein said first message format is adjustable length PPL incident Indication message, and it comprises:

Which described one or more PPL component states machine a PPL assembly ID identifies specific PPL incident Indication message with reference to; And

One of identifying in described one or more examples of described PPL component states machine of one or more address locations, each address location is modulated with the function that produces described PPL incident Indication message.

27. the system of claim 26, it is characterized in that, wherein said PPL incident Indication message is produced by one of described one or more functions, this function is configured to send specific PPL incident Indication message in response to the generation of a particular event, and wherein each described one or more address locations territory comprises:

An address location type subdomain is used for the assembly with reference to the related described telecommunications interchanger of the described state machine instance that is identified with described one or more address locations territory; And

An address information subdomain is for each provides specific address by the indicated classification assembly of described address location type field.

28. the system of claim 26 is characterized in that, wherein

Each described one or more incident relatively each described one or more PPL component states machine by unique identification, and wherein,

Described PPL incident Indication message further comprises a PPL event id territory, this territory comprises a user-defined event id, be illustrated in the generation of a particular event in the described interchanger, this causes producing specific PPL incident Indication message by described PPL component states machine.

29. the system of claim 23 is characterized in that, wherein said PPL incident Indication message further comprises:

One or more data fields with the machine-operated connection of each described one or more PPL component states are used for transmitting call control process information from described main frame to described interchanger.

30. the system of claim 11 is characterized in that, the various interchannels that wherein said call-handling capability is included in a plurality of channels dynamically connect or disconnect communication port.

31. the programmatic telecommunication interchanger of a functional stratification comprises:

Controlled switch is used for using the message produced in response to telecommunication service, dynamically connects or disconnects communication port at the various interchannels of a plurality of channels;

One or more examples of a plurality of protocol language able to programme (PPL) component states machine, a PPL component liaison of each example and described telecommunications interchanger, and expression is used to carry out an agreement of a plurality of agreements of the call-handling capability relevant with described a plurality of channels, and wherein said a plurality of PPL component states machines are associated with the functional layer of the telecommunications interchanger that comprises described PPL assembly on function; And

General programmable application programming interfaces (API) are used for transmitting standardized messages between the described functional layer and between described functional layer and the described interchanger business application.

32. the telecommunications interchanger of claim 31 is characterized in that, the described functional layer of wherein said telecommunications interchanger comprises:

An application layer comprises being configured to and the described telecommunication service application program of one or more described functional layer joint operations with realization telecommunication service function.

33. the telecommunications interchanger of claim 32 is characterized in that, wherein said application layer is arranged in described telecommunications interchanger, and wherein said general API is defined in the communication that takes place on the described telecommunications interchanger internal bus.

34. the telecommunications interchanger of claim 32, it is characterized in that, wherein said functional layer further comprises an application layer that is positioned at the host computer system that is connected with described telecommunications interchanger, and wherein said API has defined communicating by letter of taking place on the communication channel that connects described telecommunications interchanger and described main process equipment.

35. the telecommunications interchanger of claim 32 is characterized in that, wherein uses the described telecommunication service that is provided by described telecommunication service and comprises the coin free service function.

36. the telecommunications interchanger of claim 32 is characterized in that, wherein uses the described telecommunication service that is provided by described telecommunication service and comprises the voice mail business function.

37. the telecommunications interchanger of claim 32 is characterized in that, wherein uses the described telecommunication service that is provided by described telecommunication service and comprises automatic call distribution business function.

38. the telecommunications interchanger of claim 32 is characterized in that, wherein uses performed described call-handling capability by described telecommunication service and comprises mutual VAB voice answer back function.

39. the telecommunications interchanger of claim 32 is characterized in that, wherein uses performed described call-handling capability by described telecommunication service and comprises the Personal Communications Services function.

40. the telecommunications interchanger of claim 32 is characterized in that, wherein uses performed described call-handling capability by described telecommunication service and comprises that signal tone produces function.

41. the telecommunications interchanger of claim 32 is characterized in that, wherein uses performed described call-handling capability by described telecommunication service and comprises conference call functions.

42. the telecommunications interchanger of claim 32 is characterized in that, wherein uses performed described call-handling capability by described telecommunication service and comprises call management functionality.

43. the telecommunications interchanger of claim 32 is characterized in that, wherein uses performed described call-handling capability by described telecommunication service and comprises the call progress tone controlled function.

44. the telecommunications interchanger of claim 32 is characterized in that, wherein by described telecommunication service use performed described call-handling capability comprise the Incoming call routing by and queuing capability.

45. the telecommunications interchanger of claim 31 is characterized in that, wherein said functional layer comprises:

Be used to carry out the call management layer of centralized call processing capacity.

46. the telecommunications interchanger of claim 45 is characterized in that, wherein the described centralized call processing capacity of being carried out by described call management layer comprises the recorded announcement controlled function that is used to support mutual VAB voice answer back application.

47. the telecommunications interchanger of claim 45 is characterized in that, wherein the described centralized call processing capacity of being carried out by described call management layer comprises and reconnecting and forwarding function.

48. the telecommunications interchanger of claim 45 is characterized in that, wherein the described centralized call processing capacity of being carried out by described call management layer comprises provides multiple call manager characteristic.

49. the telecommunications interchanger of claim 45 is characterized in that, wherein the described centralized call processing capacity of being carried out by described call management layer comprises meeting connection management function.

50. the telecommunications interchanger of claim 31 is characterized in that, wherein said functional layer comprises:

A network signaling protocol layer that is used to carry out the network signal function.

51. the telecommunications interchanger of claim 50 is characterized in that, wherein comprises in the band by the performed described network signal function of described network signaling protocol layer and the supervision and management of band outer network signaling.

52. the telecommunications interchanger of claim 50 is characterized in that, is wherein comprised the procotol level control of calling and outgoing by the performed described network signal function of described network signaling protocol layer.

53. the telecommunications interchanger of claim 31 is characterized in that, wherein said functional layer comprises:

A link layer that is used to detect and transmit by the network signal information of network or line interface.

54. the telecommunications interchanger of claim 53 is characterized in that wherein said link layer runs on the CPU/ matrix card.

55. the telecommunications interchanger of claim 53 is characterized in that wherein said link layer runs on Line cards.

56. the telecommunications interchanger of claim 53 is characterized in that, wherein comprises that by the performed described function of described link layer T1 loses the scanning of (robbed) bit signal.

57. the telecommunications interchanger of claim 53 is characterized in that, wherein comprises the scanning of E1 channel channel associated signalling by the performed described function of described link layer.

58. the telecommunications interchanger of claim 53 is characterized in that, wherein comprises T1/E1 line interface frame alarm control by the performed described function of described link layer.

59. the telecommunications interchanger of claim 53 is characterized in that, wherein comprises that by the performed described function of described link layer the DSP signal tone produces control.

60. the telecommunications interchanger of claim 53 is characterized in that, wherein comprises the control of DSP recording voice announcement by the performed described function of described link layer.

61. the telecommunications interchanger of claim 31 is characterized in that, wherein said functional layer comprises:

The physical layer that on Line cards, realize, that the physics and the electric interfaces of network and circuit are provided for interchanger.

62. the system of claim 31 is characterized in that, wherein said API comprises:

The predetermined message format that is used for all message of the order of transmission call control process, state and data between described functional layer.

63. the telecommunications interchanger of claim 31 is characterized in that, wherein each described one or more PPL component states machine comprises:

One or more storehouses that respectively comprise one or more predefined functions;

One or more predetermined logic states;

At least one and the related scheduled event of each described one or more predetermined logic state, relative each the described one or more PPL component states machine of each described at least one scheduled event are by unique identification; And

Wherein in a single day one of described one or more scheduled events take place, and just call a predetermined primitive related with this event, and described primitive comprises a predetermined sequence of one or more described predefined functions.

64. the interchanger of claim 63 is characterized in that, wherein

Described interchanger further comprises one or more state machine engines, and wherein

Each described one or more component states machine comprises one or more predefined functions storehouse,

Wherein each described one or more component states machine is configured to be explained by one or more state machine engine.

65. the interchanger of claim 63 is characterized in that, each described one or more finite state machine comprises,

One or more storehouses, each storehouse comprises one or more predefined functions;

One or more predetermined logic states;

At least one and the related scheduled event of each described one or more predetermined logic state, relative each the described one or more PPL component states machine of each described at least one scheduled event are by unique identification; And

A predetermined sequence of one or more described predefined functions,

Wherein in a single day one of described one or more scheduled events take place, and just call a predetermined primitive related with this event.

66. the interchanger of claim 65 is characterized in that, wherein each described one or more state machine by the function of a state/event table and a primitive table in conjunction with define, wherein

Described state/event table has defined one or more predetermined logic states and described one or more scheduled events that at least one is related with each described one or more predetermined logic state, and wherein

Described primitive table definition one or more primitive, each primitive comprises a predetermined sequence of one or more described predefined functions.

67. the interchanger of claim 65 is characterized in that, wherein

Described interchanger further comprises one or more state machine engines, and wherein

Described each described one or more finite state machine are configured to be explained by one or more state machine engine.

68. the system of claim 65 is characterized in that, wherein said PPL event request message comprises:

Which described one or more PPL component states machine a PPL assembly ID is used to identify a specific PPL event request message with reference to;

An example of described one or more examples of the described PPL component states machine that one or more address locations territory, each address location domain identifier are identified by described PPL assembly ID territory; And

A PPL event id territory that comprises a user-defined event id, an expression and a specific unique related incident of PPL component states machine that is identified by described PPL assembly ID territory.

69. the system of claim 68 is characterized in that, wherein each described one or more address locations territory comprises:

An address location type subdomain is used for the assembly with reference to the related described interchanger of the described state machine instance that is identified with described one or more address locations territory; And

An address information subdomain is for each provides specific address by the indicated classification assembly of described address location type field.

70. the system of claim 68 is characterized in that, wherein said PPL event request message further comprises:

The data field of one or more and each described one or more PPL component states office connection is used for transmitting call control process information from described main frame to described interchanger.

71. the system of claim 65 is characterized in that, wherein said PPL incident Indication message comprises:

Which described one or more PPL component states machine a PPL assembly ID is used to identify a specific PPL incident Indication message with reference to;

Which described one or more PPL component states machine a PPL assembly ID territory is used to identify a specific PPL incident Indication message with reference to;

One or more address locations territory, one of described one or more examples of the described PPL component states of each address location domain identifier machine are modulated with the function that produces described PPL incident Indication message; And

A PPL event id territory of containing user-defined event id is illustrated in the generation of a particular event in the described interchanger, and this causes producing specific PPL incident Indication message by described PPL component states machine.

72. the system of claim 71, it is characterized in that, wherein said PPL incident Indication message is produced by one of described one or more functions, these functions are configured in response to the specific PPL incident of sending of particular event Indication message, and wherein each described one or more address locations territory comprises:

An address location type subdomain is used for the assembly with reference to the related described interchanger of the described state machine instance that is identified with described one or more address locations territory; And

An address information subdomain, each classification assembly indicated for described address location type field provides particular address.

73. the system of claim 71 is characterized in that, wherein said PPL incident Indication message further comprises:

The data field of one or more and each described a plurality of PPL component states office connection, be used between described functional layer, transmitting call control process information, described data block is the communication protocol of being supported according to described PPL component states machine relevant with which functional layer to this PPL component states machine, for each described a plurality of PPL assembly is defined.

A 74. universal applications program interface (API), be used between the functional layer of telecommunication system, carrying out the mutual call treatment communication of standardization, described telecommunication system comprises a telecommunications interchanger and a main process equipment that is connected with this interchanger, and this universal applications program interface comprises:

Be used for transmitting to the described functional layer of described telecommunications interchanger first message able to programme of all-calls control and treatment order and data from described main frame; And

Be used for transmitting to described main frame second message able to programme of all-calls control and treatment state and data from the described functional layer of described telecommunications interchanger.

75. the API of claim 74 is characterized in that, wherein said telecommunications interchanger comprises:

One or more examples of one or more PPL component states machines, call treatment agreement of each case representation, each described one or more finite state machine comprises,

One or more storehouses, each storehouse comprises one or more predefined functions;

One or more predetermined logic states;

At least one and the related scheduled event of each described one or more predetermined logic state, relative each the described one or more PPL component states machine of each described scheduled event are by unique identification; And

Wherein in a single day one of described one or more scheduled events take place, and just call a predetermined primitive with this generation event correlation, and described primitive comprises a predetermined sequence of one or more described predefined functions,

Wherein said one or more scheduled event comprise receive described first message able to programme and wherein at least one described one or more predefined function produce described second message able to programme.

76. the interchanger of claim 75 is characterized in that, wherein

Described telecommunications interchanger further comprises one or more state machine engines, and wherein

Each described one or more PPL component states machine comprises one or more storehouses of described one or more predefined functions, and wherein

Each described one or more PPL component states machine is configured to be explained by one or more state machine engine.

77. the interchanger of claim 75 is characterized in that, wherein said API further comprises:

An affirmation message that comprises a status field, this status field provides the state information of particular message for the recipient,

In a single day wherein said main process equipment receives described first message able to programme, just send described acknowledge message to described telecommunications interchanger, and in a single day wherein said interchanger receives second message able to programme, described one or more predefined functions just is set to send described acknowledge message to described main process equipment.

78. one kind is used to develop the method for calling out related protocol, be used for carrying out relevant at the call-handling capability of programmatic telecommunication interchanger at the communication port of each interchannel foundation of a plurality of channels, the performed function of described call-handling capability and the particular functional layer of described interchanger is associated, and this method may further comprise the steps:

(a) create one or more state/event tables, each state/event table defines many predetermined logic states,

One or more and the related scheduled event of each described a plurality of predetermined logic state, described one or more scheduled event comprises one or more application programming interfaces (API) message of the calling related protocol that is received in the identical or different described establishment of conduct that functional layer produced, and

One with the related primitive of each described one or more scheduled event, wherein in case a described primitive takes place just to call in described one or more correlating events;

(b) create one or more primitive tables, each primitive table is the predetermined sequence that predetermined layer of each described primitive definition relies on function, and one or more described predefined functions produce the API message to described functional layer; And

(c) create one or more agreements, each agreement is represented by a predetermined association of one or more described state/event tables and one or more described primitive tables.

79. the method for claim 78 is characterized in that, this method further may further comprise the steps:

(d) be stored in the interior described one or more calling related protocols of described programmatic telecommunication interchanger; And

(e) in described telecommunications interchanger, carry out described one or more calling related protocols.

80. the method for claim 78, it is characterized in that, wherein each described one or more agreement is represented by a finite state machine, this finite state machine can be visited the storehouse that comprises described predefined function definition and is configured to be explained that by a state machine engine described state machine engine moves in response to described pointer.

81. the programmatic telecommunication interchanger by functional stratification comprises:

A certain layer processor, has the state machine engine that is configured to carry out a PPL component states machine example, described PPL state machine instance is illustrated in the interchanger and a call treatment agreement that communication channel is related, described state machine is according to one or more predefined functions that call of a current state and a scheduled event

Wherein said one or more predefined function comprises generation first application programming interfaces (API) message, and described first application programming interfaces (API) message has first message format that is used for transmitting from described state machine all message of call control information; And

Wherein said scheduled event is one of many incidents, comprises receiving having the 2nd API message of second message format that is used for transmitting to described state machine all message of call control process.

82. the interchanger of claim 81 is characterized in that, wherein said certain layer processor is configured to handle the described first and second API message of internal representation form, and wherein said interchanger further comprises:

A communication processor that is connected with described certain layer processor is changed between API form of message that is configured at internal representation and the described universal standardization API form of message, and further is configured to transmit the described first general API message.

83. the interchanger of claim 82 is characterized in that, wherein said system comprises a main frame that is configured to support be positioned at the application program of application layer, and wherein said API message transmits to main frame from interchanger, and vice versa.

84. the interchanger of claim 81 is characterized in that, wherein said processor comprises:

A former subfunction message buffer comprises a purpose identification field and a source identification field, contains a source address and the address that is positioned at the reception PPL component instance on the identical or different PPL processor respectively; And

Be used for described message buffer is appended to device on the described internal representation of the described PPL incident Indication message that is produced by described former subfunction.

85. the interchanger of claim 84 is characterized in that, wherein said message buffer further comprises:

A PPL event identifier territory, sign produces the incident of described former subfunction.

86. the interchanger of claim 84 is characterized in that, wherein said message buffer further comprises:

One or more data fields comprise and described incident and described atom function information related, that be used to receive example.

87. the interchanger of claim 83 is characterized in that, wherein said many PPL component states machines are certain layer.

88. the interchanger of claim 83 is characterized in that, wherein said many PPL component states machines are specific functions.

89. the interchanger of claim 83 is characterized in that, wherein said many PPL component states machines are special interfaces.

90. the interchanger of claim 83 is characterized in that, wherein said many PPL component states machines are specific protocols.

91. the interchanger of claim 83 is characterized in that, wherein said many PPL component states machines are specific protocols.

92. one kind is used standardised generic application programming interfaces (API) by the method that communicates between the programmatic telecommunication switching system of functional stratification two-layer, this method may further comprise the steps:

(1) in having the certain layer PPL processor of a state machine engine, calls the example of one or more certain layer procedural agreement language (PPL) component states machine, call treatment agreement of each described one or more case representation;

(2) call former subfunction according to defining described state machine and being stored in the processor with state/event table and the primitive table of carrying out various functions, described former subfunction produces the internal representation of an API incident Indication message; And

(3) the PPL incident Indication message with described internal representation is sent to a communication processor that is connected with described processor, to be translated into general standardization PPL incident Indication message.

93. the method for claim 92 further may further comprise the steps:

(4) described general API message is sent to another PPL component states machine example that is positioned at identical or different PPL processor.

94. the method for claim 92 is characterized in that, wherein said system comprises that a support is positioned at the main frame of the application program of application layer, and method wherein further may further comprise the steps:

(4) described general API message is sent to an application program that is arranged in main frame.

95. the method for claim 93 further may further comprise the steps:

(5) create a former subfunction message buffer by described processor, this buffering area comprises a purpose identification field and source identification field that contains described source address respectively and receive the address of PPL component instance; And

(6) described message buffer is appended in the internal representation of the described PPL incident Indication message that produces by described former subfunction.

96. the method for claim 95 is characterized in that, wherein said message buffer further comprises:

A sign produces the PPL event identifier territory of the incident of described former subfunction.

97. the method for claim 95 is characterized in that, wherein said message buffer further comprises:

One or more data fields that comprise the information related with a described incident that receives example and described atom function.

98. the method for claim 92 further may further comprise the steps:

(4) receive a general API PPL event request message at described communication processor;

(5) described general API PPL event request message is translated as the PPL event request message of internal representation at described communication processor;

(6) the PPL event request message with described internal representation is sent to described certain layer PPL processor;

(7), receive and handle the PPL event request message of described internal representation at described certain layer PPL processor; And

(8) the PPL event id value that is comprised in the PPL event request message with described internal representation is converted to the unique PPL event identifier of the certain layer that is used for described certain layer state machine value; And

(9) hold up the unique PPL event identifier of this layer of processing value by certain layer PPL component states power traction.

99. the method for claim 98 is characterized in that, wherein said step (9) may further comprise the steps:

(a) that PPL event identifier value of the described state machine current state of inquiry in described state/event table;

(b) when finding match event, be invoked at the primitive that is identified in state/event table, from the primitive table, retrieve the former subfunction related with this primitive ID;

(c) in state/event table, call the primitive that a quilt identifies; And

(d) from the primitive table, retrieve the former subfunction related with this primitive ID.

Images