JP3012565B2 - Call processing interface between exchange and exchange - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a call processing interface method between a switchboard and a switchboard, and more particularly to a switchboard service control system capable of diverting control modules for various additional services for general subscribers installed in the switchboard. About.

[0002]

2. Description of the Related Art There is no standard for a conventional call processing interface between a switchboard and a switch body, including a method for realizing call processing on the switchboard and the switchboard side. I through a connection device such as
Connect by SDN basic / primary interface, transfer call information such as exchange connection information, billing information, number information, etc. on one B channel, transfer voice signal on the other B channel, and transfer control signal on D channel The switching table control method to be performed is, for example, Japanese Patent Laid-Open No. 5-22459 (switching table control method) or Japanese Patent Laid-Open No. 4-276998.
No. (switching board control system in ISDN exchanges).

[0003]

Conventionally, the call processing interface between the exchange and the exchange has been realized by the ISDN basic / primary interface. Therefore, the exchange basic call control module is provided above the UNI protocol control module. Required. That is, U
There was no clear definition of the call control model on the switch body side only by unifying only the format of the NI interface, so there was a problem that the types of basic call control models increased and the software processing on the switch side became complicated. .

In addition, since the types of basic call control models increase and software processing on the exchange body becomes complicated, not only reliability, productivity and maintainability are lacking, but it is difficult to reuse resources, and software This is a factor that causes soaring development costs and product manufacturing costs.

An object of the present invention is to provide a call processing interface method between a switchboard and a switch which is excellent in reliability, productivity, and maintainability and can reuse resources.

[0006]

According to the present invention, there is provided a call processing interface between a switchboard and an exchange, wherein the call processing interface between the switchboard and the exchange in a switching system accommodating a plurality of switchboards having a display unit is provided. Various types of user / network interfaces (UNI: User Network Interface) are used for the call processing of the subscriber system control of the exchange.
face) A switching supplementary service control which is separated into a protocol control module and a subscriber basic call control module, and includes various service modules for general subscribers as external service modules above the subscriber basic call control module. The UNI protocol comprising, as one of the service modules, a switchboard service control module for realizing a plurality of services specific to the switchboard, and various protocol control modules below the subscriber basic call control module. A control module, a switchboard protocol control module as one of the protocol control modules, and a switchboard interface control lower module that controls a physical interface with the switchboard under the control of the switchboard protocol control module; Includes various call control signals between the said subscriber basic call control module UNI protocol control module interfaces with a primitive code format,
The interface between the switchboard and the switchboard interface control lower module includes a service identifier parameter describing various key press information for specifying a service in the switchboard service control module and specific contents of the key press information. The key information parameter to be defined is defined and notified from the exchange to the exchange, and in response to this notification, the exchange defines a screen display information parameter that describes various display information to be displayed on the display unit of the exchange. And responding to the exchange table.

[0007] The UNI interface may activate a plurality of services in the switchboard service control module by pressing one key of the switchboard.
In the key press information which is control information, a plurality of the service identifier parameters for specifying the corresponding service are described and notified to the exchange, and the exchange performs the plurality of services corresponding to the service identifier described in the service identifier parameter. Are individually activated, and key press response information, which is response information, is returned to the switchboard as many as the number of service identifiers described in the service identifier parameter.

In addition, a call number is defined on the UNI interface, and the exchange has a call between a calling subscriber and the exchange, a call between the exchange and a called subscriber, and a meeting between the exchanges. When one call number is assigned to each call correspondence and a plurality of calls are simultaneously handled by one switchboard, a plurality of the call numbers are used at the same time and notified to the exchange, and a multi-way corresponding to a general subscriber is provided. It is characterized in that it is processed in the same manner as a calling service, and that the switching board disconnection processing and the inter-switch transfer processing, which are the processing specific to the switching board, are processed in the same manner as the transfer service for general subscribers.

In addition, the call disconnecting process in the on-board monitoring state in which the handling person of the exchange intervenes in the call state between the calling subscriber and the called subscriber is performed by the calling subscriber and the called subscriber at the end of the call from the exchange. In the disconnection processing, a disconnection signal is sent to the exchange when the later disconnection processing is completed to disconnect the call, and a call that is autonomously transmitted from the exchange that has received the disconnection signal. It is characterized by receiving a signal and regenerating a charge notification call for billing ticket processing.

[0010] Further, the language assist call, the recall after disconnection of the switchboard, and the handler recall process at the switchboard are performed by the switchboard in which the screen display information parameter includes predetermined display information indicating that fact. Sending a call signal to the exchange,
The switchboard discriminates the contents displayed on the display unit and autonomously sends a calling signal to the switchboard, and the switchboard responds to one incoming call for a calling subscriber and for a called subscriber. The two calls are simultaneously generated, and each call is placed in a communication state to be in the bench monitoring state.

When the charge notification in the monitor state is completed, the exchange notifies the exchange using the service identifier parameter and the key information parameter, and receives the charge notification end notification. A response message describing a predetermined reason display indicating that the autonomous transmission of the switching board is prohibited is received from the exchange, the content of the reason display is determined, and the call is terminated.

[0012] Further, in the string switching process in a state in which a plurality of strings are being controlled simultaneously, the exchange table switches strings by the service identifier parameter and the key information parameter for a call corresponding to the string being controlled first. To the exchange, after receiving a response from the exchange that received the string switching notification, autonomously the service identifier parameter and the By notifying the exchange to the effect that the string is switched by the key information parameter, the exchange performs call control independently for each string.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a diagram showing a configuration of software of the present invention. FIG. 2 is a diagram showing a format of a UNI interface signal between the exchange and the exchange.

The call processing software for the subscriber system control of the switching system according to the present invention shown in FIG. 1 is separated into various UNI protocol control modules 1 and a basic call control module for the subscriber system. One of various exchange supplementary services is provided to the external exchange supplementary service control module 3 above the module 2 as one of various exchange supplementary services, which is equivalent to the general subscriber multiway calling service module 3-2 and the transfer system service control module 3-3. The switchboard service control module 3-1 is deployed in a position, and is equivalent to the DSS1 protocol control module 1-1 of ISDN subscriber control, which is known as one of various UNI protocol control modules 1 under the subscriber basic call control module 2. In this position, the exchange protocol control module 1-2 is deployed, and the exchange platform The protocol control module 1-2 has a format that does not depend on a physical interface under its control, and a switching interface control lower module 1-3 that absorbs a difference between the physical interfaces is provided to implement call processing.

Notification of various types of information from the exchange 4 to the exchange is performed by a UNI interface 5-1 between the exchange and the exchange 4.
Above, the signal format shown in FIG. 2 is defined, a call number 5-11 for identifying a call, a string number 5-12 for identifying a string on the exchange 4 side, and an exchange pressed on the exchange 4 side. A service identifier parameter indicating information on which service is to be activated in the switchboard service control module 3-1 on the exchange side in correspondence with the key-specific key press information, and a key indicating specific information content of the pressed key. The information parameter code 5-14 is defined, and the parameter length 5-1
5. The exchange 4 sets the contents together with the contents 5-16 of the parameters.

Various key press information from the exchange table 4 is provided by UN
The switching interface control lower module 1-3 is notified by the I interface 5-1 and the switching protocol control module 1 is notified by the internal interface 1-4.
-2, and is notified to the subscriber basic call control module 2 by the call control primitive 6-1.

When the service identifier parameter is described in the call control primitive 6-1, the subscriber basic call control module 2 switches the switchboard service control module 3-3.
1 is started, and the switchboard service control module 3-1 performs necessary processing.

The processing result information is sent from the switching service control module 3-1 to the subscriber basic call control module 2.
To the switchboard interface control lower module 1-3 via the call control primitive 6-2 and the internal interface 1-5, and to the UNI interface 5-
It is returned to the exchange table 4 by 2.

The call number 5-11 for identifying the call on the UNI interface 5-2, the string number 5-12 for identifying the string on the exchange 4 side, and the exchange 4 When notifying a screen display information parameter for displaying information and a call disconnection to a display device provided, a code 5-14 of a disconnect reason parameter is defined, a parameter length 5-15, a parameter content 5-5. 16 and the switchboard service control module 3-1 perform the content setting.

The switchboard interface control lower module 1-3 in FIG. 1 absorbs the difference of the physical interface with the switchboard 4 and, specifically, X. 25 (LAP
B) Absorb the interface with the exchange 4 by the interface, ISDN (LAPD) interface, LAN (TCP / IP) interface, etc., and do not rely on the lower physical layer for the upper exchange protocol control module 1-2. It provides common internal interfaces 1-4 and 1-5.

Code 5-13 of the message in FIG.
Is a call message, a response message from the switchboard 4,
Key press message for notifying various key presses after switchboard response, disconnection confirmation message for disconnection confirmation, incoming call message from exchange side, response confirmation message, response notification message, number request message, disconnection message, key A key press confirmation message corresponding to the press is defined.

The key operation information at the switchboard is such that, when the key is pressed, the switchboard 4 first stores the information such as the number of the called party which is received by the switchboard operator from the caller after receiving the call at the switchboard 4. Information required for various services such as card dialing, incoming call billing, third party billing, etc.
When the key is pressed, the exchange is notified and the exchange stores the information.

Further, information corresponding to various information write keys for a ticket required when a call is terminated in the on-board monitoring state is stored.

The screen display information notified from the exchange to the exchange 4 includes, for example, display of the type of the incoming call when the incoming call message of FIG. 3 arrives at the exchange (see step S103 of FIG. 3). The result of performing the authentication process based on the calling subscriber number is described as screen display information.

The service identifier parameter is a parameter corresponding to the Feature Activation parameter on the DSS1 protocol, the key information parameter is a parameter corresponding to the Keypad parameter on the DSS1 protocol, and the screen display information parameter is a parameter corresponding to the Display parameter of the DSS1 protocol. Parameter.

Next, the operation of the embodiment of the present invention will be described in detail with reference to FIG. FIG. 3 is a diagram showing the sequence of the switching call processing of the present invention.

Incoming call from calling subscriber (step S in FIG. 3)
100), the subscriber basic call control module 2
The switchboard service control module 3-1 is started (S10).
1) After the switchboard service control module 3-1 performs necessary operations, the switchboard service control module 3-1 returns necessary information to be notified to the switchboard 4 to the subscriber basic call control module 2 and returns (ends predetermined processing). (S102).

The subscriber basic call control module 2 describes the returned information in the incoming call message and transfers it to the exchange 4 via the exchange protocol control module 1-2 in the same manner as a general subscriber termination ( S103).

When the operator of the exchange 4 presses the response key provided in advance, a response message is returned to the subscriber basic call control module 2 via the exchange protocol control module 1-2 (S104).

The subscriber basic call control module 2 receives the response message and receives the switching service control module 3-1.
Is activated again (S105), the exchange service control module 3-1 performs necessary operations, returns necessary information to be notified to the exchange 4 to the subscriber basic call control module 2, and returns (S106).

The subscriber basic call control module 2 describes the transferred information in a response confirmation message, and exchanges the response confirmation message via the switchboard protocol control module 1-2 in the same manner as a general subscriber response. It is transferred to the platform 4 (S107).

With the above operation, the connection between the calling subscriber and the switching board 4 is established, and the operator of the switching board 4 retrieves necessary information such as the number of the called subscriber from the calling subscriber and stores it in the exchange. The information to be transmitted is notified to the exchange by pressing various keys corresponding to the exchange table 4.

When the corresponding key is pressed on the switching board 4, a key press notification message is transferred to the subscriber basic call control module 2 via the switching board protocol control module 1-2 (S108), and the subscriber basic call is performed. The control module 2 activates the switchboard service control module 3-1 (S109), and the switchboard service control module 3-1.
Transmits the key press confirmation message to the exchange 4 via the subscriber basic call control module 2 and the exchange protocol control module 1-2 after storing necessary information (S11).
0) and return (S111).

When the key press message in step S108 includes a plurality of service identifier parameters, for example, when the caller number is not included in the incoming call message (S103), the subscriber basic call control module 2 switches the switching board. The switchboard service control module 3-1 starts up again for each service in the service control module 3-1 (S112), and sends a key press confirmation message independently for each service via the switchboard protocol control module 1-2. It is returned to the exchange table 4 (S113) and returns (S11).
4).

For example, when the caller's number is not included in the incoming call message (S103), the caller's number confirmed by voice is entered by pressing a key from the exchange 4 and the caller's authentication processing is performed on the exchange side. If the third party charging number is returned as a result of activating the switchboard service control module 3-1 (S101) and returning (S102), the switchboard service control module 3-1 is executed again.
1 (S105), and returns after performing third party billing processing (S106). If it is expected that two services will be activated by pressing this key, the exchange 4
Two service identifiers (caller authentication and third party billing) are set in the key press message (S108).

When the keys for setting a plurality of service identifiers are pressed, the switching board 4 waits until a key press confirmation message for the number of pressed keys is received.

By the above operation, a call is established between the calling subscriber and the switching board. Here, in order to call the called subscriber, the switching board 4 depresses the calling key and transmits a calling message. The call is transferred to the subscriber basic call control module 2 via the switchboard protocol control module 1-2 (S115),
The subscriber basic call control module 2 generates a second call using a call number different from the first incoming call, and activates the switchboard service control module 3-1 (S116).

The switching board service control module 3-1 performs necessary operations, generates necessary information to be notified to the switching board 4, returns the information to the subscriber basic call control module 2, and returns (S117).

The subscriber basic call control module 2 writes the returned information in a call confirmation message as in the case of general subscriber calling, and sets the switching board protocol control module 1-
2 to the exchange 4 (S119), and at the same time, generates a call signal for starting the downstream station (the exchange in which the called subscriber is accommodated) and sends it to the downstream station (S11).
8).

When the subscriber basic call control module 2 receives the response signal from the downstream station (S120), it activates the switchboard service control module 3-1 again (S121). Necessary operation is performed, and necessary information to be notified to the switching board 4 is returned to the subscriber basic call control module 2 to return (S122).

The subscriber basic call control module 2 writes the returned information in the response notification message, and sends the response notification message via the switching board protocol control module 1-2 in the same manner as a general subscriber's response. To the exchange board 4 (S123).

By the above-mentioned operation, the call state of the calling subscriber and the called subscriber in the state where the operator of the exchange 4 intervenes (the operator is in the call monitoring state) (hereinafter referred to as the on-board monitoring state).
The call state is the same as that of a multi-way calling service that handles a plurality of calls, which is a general subscriber service at the same time.

After the operation of the exchange 4 is completed, the operator of the exchange 4 is disconnected from the on-board monitoring state, and the operator is removed to shift to a call state of only the calling subscriber and the called subscriber. Operates the disconnection key, the key press message is transferred to the subscriber basic call control module 2 via the switchboard protocol control module 1-2 (S124).

When the subscriber basic call control module 2 receives the key press message, it activates the switchboard service control module 3-1 (S125), and the switchboard service control module 3-1 executes the general subscriber service. The same processing as that of the transfer system service (S127) is performed, and the key press confirmation message is transferred to the switchboard 4 via the subscriber basic call control module 2 and the switchboard protocol control module 1-2 (S126), and the process returns (S128). ).

The subscriber basic call control module 2 generates a disconnection message for disconnecting the call to the switchboard 4, and transmits the message to the switchboard 4 via the switchboard protocol control module 1-2.
The exchange 4 that has received the disconnection message transfers the disconnection confirmation message to the subscriber basic call control module 2 via the exchange protocol control module 1-2 (S131, 132). ).

The disconnection message in steps S129 and S130 includes a notification of the reason for disconnection as a parameter, and notifies that autonomous calling is unnecessary according to the reason for disconnection.
The switchboard 4 does not send out an autonomous call signal even when the last call ends.

The call processing at the exchange has been described above by taking a call between a calling subscriber and a called subscriber as an example. A form in which both subscribers are simultaneously called from the exchange 4 after a lapse of a predetermined time registered in advance. That is, internally, for example, in the case of a call back service or a time designation service in which both subscribers are called subscribers, and in a call that cannot be processed by the operator who is seated at the switchboard 4 that has received the first call. In the case where a call is sent to another exchange where a skilled operator is seated, that is, even if the called subscriber is a call for a handler of another exchange, the same form can be realized. When one of the exchanges is an exchange, the operation of disconnecting the exchange on the exchange side is an inter-unit transfer process.

Next, the call disconnection process in the on-board monitoring state will be described with reference to FIG. FIG. 4 is a diagram showing a sequence of a call disconnection process in the on-board monitoring state of the exchange call process.

In the state before the disconnection key is pressed in step S124 of FIG.
When the disconnection signal from the calling subscriber and the disconnection signal from the called subscriber are received (S200, S207), the switchboard service control module 3-1 is activated (S201, S201).
208).

The switchboard service control module 3-1 includes:
The information which should be notified to the switching board 4 by performing necessary operations is returned to the subscriber basic call control module 2 and the operation returns (S202,
S209). The subscriber basic call control module 2 writes the returned information in the disconnection message and transfers the information to the exchange 4 via the exchange protocol control module 1-2 (S2).
03, S210).

The operator of the switching board 4 presses the disconnection key, and sends a disconnection confirmation message to the switching board protocol control module 1.
Then, the call is transferred to the subscriber basic call control module 2 via S-2 (S204, S211).

As described above, when there are no more calls from the state in which there are two calls inside the exchange, the exchange service control module 3-1 treats the exchange 4 as a string in steps S202 and S209. The disconnection message when disconnecting the last call is sent without setting a specific reason as a disconnection reason notification parameter, and the next autonomous call-out message without leaving necessary information such as billing ticket information for this call , And returns (S214).

When the specific reason display is not set in the disconnection message for the last call handled by the string, the switching board 4 autonomously transmits the outgoing call message together with the disconnection confirmation message to the switching board protocol control module 1. -2 to the subscriber basic call control module 2 (S21).
5).

The subscriber basic call control module 2 receives the outgoing call message, and
-1 is activated (S216). The switchboard service control module 3-1 takes over the ticket of the call handled in the tabletop monitoring state to this new call (a call originated autonomously) and releases the previous call (the previously disconnected call). And return (S21
7).

The subscriber basic call control module 2 sends an incoming request message to the switchboard protocol control module 1-2.
(S218), and the new call enters a state corresponding to the state of waiting for a dial from a general subscriber (S219) (S219).

When various keys for ticket editing are depressed on the switchboard 4, a key press message is transferred to the subscriber basic call control module 2 via the switchboard protocol control module 1-2 (S220), and the subscriber The basic call control module 2 activates the switchboard service control module 3-1 (S221), and the switchboard service control module 3-
1 executes post-ticket processing (fee notification processing) (S
222).

The switchboard service control module 3-1 includes:
When the post-ticket processing (fee notification processing) is completed, the key press confirmation message is sent to the switching board protocol control module 1-
Then, the data is transferred to the exchange board 4 via the server 2 (S224), and the process returns (S225).

When the billing ticket creation is finally completed, the exchange 4 presses the ticket editing end key and issues a key press message to notify the end of the ticket editing via the exchange protocol control module 1-2 to the subscriber basic call. The control module 2 is notified (S226).

The subscriber basic call control module 2 activates the switchboard service control module 3-1 (S227),
The switchboard service control module 3-1 performs a ticket transfer process of transferring the billing ticket created by the end of editing to an external billing processing facility or the like (S228), and sends a key press confirmation message to the switchboard protocol control module 1.
-2 to the exchange board 4 (S229) and return (S228).

The subscriber basic call control module 2 transfers a disconnection message for releasing the call for post-processing to the switchboard 4 via the switchboard protocol control module 1-2 (S231). The reason for the disconnection that does not require autonomous calling is also notified on the disconnection message.

When receiving the disconnection message, the switchboard 4 transfers the disconnection confirmation message to the subscriber basic call control module 2 via the switchboard protocol control module 1-2 without an autonomous call (S232). The basic call control module 2 starts the switchboard service control module 3-1 (S233).

In this state, the switchboard 4 returns to the idle state, the switchboard service control module 3-1 also terminates the service and returns (S234), and the subscriber basic call control module 2 becomes idle (S235). As a result, everything returns to an empty state, and a new call can be processed.

The specific operation performed by the switchboard service control module 3-1 at the time of pressing various keys on the switchboard side is an MWT (multi-way trunk) acquisition / release process for enabling a three-party call. The first subscriber side is made to listen to the hold tone, to perform a connection process with the next subscriber, for example, and to store the information written from the exchange 4 by pressing various keys in the exchange. For example, the information is used as a billing ticket.

Next, with reference to FIG. 5, the operations in the language assisting call, the recall after disconnecting the switchboard or the recalling of the switchboard operator, and the operation related to string switching will be described in detail.

FIG. 5 shows the language assistance for the switching call processing of the present invention.
It is a sequence diagram of a recall, a recall call response process, and a string switching process. FIG. 7 is a sequence diagram of language assistance, recall, recalling call handling processing, and string switching processing of the switching call processing of the present invention.

The language assistance call, recall, and recall call are notified as an incoming signal to the subscriber basic call control module 2 (S300). The subscriber basic call control module 2 starts the switchboard service control module 3-1 (S30).
1).

The switchboard service control module 3-1 includes:
A special value is set for the screen information display parameter specified in the incoming call message, and the screen information display parameter is returned to the subscriber basic call control module 2 to return (S302).

The subscriber basic call control module 2 writes the returned screen information display parameter in which the special value is set in the incoming call message, and sends it to the exchange 4 via the exchange protocol control module 1-2. The transfer is performed (S303).

When receiving the incoming message with the special display, the exchange 4 presses the response key to return the response message to the subscriber basic call control module 2 via the exchange protocol control module 1-2 ( S304), the subscriber basic call control module 2 activates the switchboard service control module 3-1 (S305).

The switchboard service control module 3-1 includes:
Necessary operations are performed, and necessary information to be notified to the exchange 4 is returned to the subscriber basic call control module 2 to return (S3).
06). The subscriber's basic call control module 2 writes the returned information in the response confirmation message and transfers it to the exchange 4 via the exchange protocol controller 1-2 (S30).
7). Here, the subscriber basic call control module 2 enters a communication state (S308).

Upon receiving the response confirmation message in step S307, the switchboard 4 autonomously sends a call message using a different call number via the switchboard protocol control module 1-2 to the subscriber basic call control module 2. (S309). Subscriber basic call control module 2
Receives the outgoing call message with a different call number, activates the switchboard service control module 3-1 (S31).
0).

The switchboard service control module 3-1 includes:
The call confirmation message and the response message are returned to the exchange 4 via the subscriber basic call control module 2 and the exchange protocol control module 1-2 (S311 and S311).
312) and return (S313). At this time, the subscriber basic call control module 2 enters a communication state (S314).

As described above, one call from the calling subscriber to the called subscriber is separated into two calls from the switchboard to the calling subscriber and from the switchboard to the called subscriber. (S308, S314). With this operation, the call state is restored to the same call state as the normal desk monitoring state.

When a plurality of strings are simultaneously handled by the same switching board, the string switching procedure is as follows. For the call corresponding to the switching source string from the switching board 4, the string switching key is pressed to exchange the key press message. It transfers to the subscriber basic call control module 2 via the platform protocol control module 1-2 to notify the string switching (S315).

The subscriber basic call control module 2 activates the switchboard service control module 3-1 (S316),
The switchboard service control module 3-1 sets the state relating to the string to the hold state (S317). The switchboard service control module 3-1 returns a key press confirmation message to the switchboard 4 via the subscriber's basic call control module 2 and the switchboard protocol control module 1-2 when it is put on hold (S318), and returns. (S319).

Upon receiving the key press confirmation message in step S318, the switchboard 4 autonomously sends a key press message to the call corresponding to the switching destination string via the switchboard protocol control module 1-2. The call is transferred to the call control module 2 (S320), and the subscriber's basic call control module 2 switches the switchboard service control module 3-1.
Is started (S321).

The switchboard service control module 3-1 includes:
In step S317, the status of the suspended
By updating to the CT state (S322), the call corresponding to the string that has been updated to the ACT state is identified as a call that is currently subject to key control of the switchboard 4.

Since the key press message is notified from the exchange 4 to the call corresponding to both strings (S315, S3
20) On the exchange, calls corresponding to each string can be controlled independently.

Further, regarding control of a plurality of strings, the same IS
The same treatment as when a DN subscriber sets up a call using a different Bch is possible, and the subscriber basic call control module 2 can be used effectively also here.

As described above, the control of various switchboard services is realized by the switchboard service control module external to the subscriber's basic call control module. Function or subscriber calling function can be used, independent service control can be performed corresponding to the switchboard, reliability and maintainability are improved compared to newly installing an independent dedicated switchboard basic call control module, Further, the multi-way calling service module created for the subscriber basic call control module and the transfer system service control module can be diverted, and the reliability and maintainability are improved by improving productivity and reusing resources.

[0081]

As described above, according to the present invention, an external service control module uses a subscriber basic call control module to utilize a subscriber termination function or a subscriber transmission function realized in general call processing. As a result, various switchboard service controls can be easily realized.

Further, a multi-way calling service provided in a general subscriber system service corresponds to a plurality of call control in the switching system, and a plurality of B channel control of the ISDN corresponds to a plurality of string control in the switching system. A multi-way calling service control module for providing a transfer service corresponding to a switchboard disconnection operation or an inter-server transfer operation in a switchboard system, and a subscriber basic call control module having a multiple B channel control function of ISDN; The switching system control service can be implemented on the subscriber basic call control module as well as the general subscriber system service by using / diverting the transfer system service control module. Switching board-specific processing such as disconnection operation and independent control of calls corresponding to strings It can be easily realized by diverting a general subscriber service control module.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of software of the present invention.

FIG. 2 is a diagram showing a format of a UNI interface signal between the exchange and the exchange according to the present invention.

FIG. 3 is a diagram showing a sequence of a switching call processing of the present invention.

FIG. 4 is a diagram showing a sequence of a call disconnection process in the on-board monitoring state of the exchange call process according to the present invention.

FIG. 5 is a sequence diagram of a language assistance, a recall, a recall call handling process, and a string switching process of the switching call process of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 UNI protocol control module 1-1 DSS1 protocol control module 1-2 Switchboard protocol control module 1-3 Switchboard interface control lower module 1-4, 1-5 Internal interface 2 Subscriber basic call control module 3 Switching supplementary service control Module 3-1 Switchboard service control module 3-2 Multiway calling service module 3-3 Transfer system service control module 4 Switchboard 5-1 and 5-2 UNI interface 5-11 Call number 5-12 String number 5-13 Message code 5-14 Parameter code 5-15 Parameter length 5-16 Parameter content 6-1 and 6-2 Call control primitive

Continuation of the front page (56) References JP-A-4-276998 (JP, A) JP-A-5-22459 (JP, A) JP-A-6-339169 (JP, A) JP-A-5-30222 (JP) JP-A-3-74997 (JP, A) JP-A-4-40147 (JP, A) JP-A-6-141085 (JP, A) JP-A-8-279825 (JP, A) 9-18906 (JP, A) JP-A-10-13537 (JP, A) JP-A-10-308788 (JP, A) JP-A-10-308962 (JP, A) JP-A-10-308963 (JP, A) A) (58) Field surveyed (Int. Cl. ⁷ , DB name) H04M 3/00 H04M 3/42-3/64 H04Q 3/545 H04Q 3/58

Claims (7)

(57) [Claims] 1. A call processing interface between a switchboard and a switch in a switching system accommodating a plurality of switchboards having a display unit, wherein call processing for subscriber system control of the switchboard is performed by various user network interfaces (UNIs). : User Network
(Interface) Protocol control module and subscriber basic call control module, switching additional service control including various service modules for general subscribers as an external service module above the subscriber basic call control module The UNI protocol comprising, as one of the service modules, a switchboard service control module for realizing a plurality of services specific to the switchboard, and various protocol control modules below the subscriber basic call control module. A switching module protocol control module as one of the protocol control modules;
A switchboard interface control lower module that controls a physical interface with the switchboard under the switchboard protocol control module, and various call control signals between the subscriber basic call control module and the UNI protocol control module. Interfaces in a primitive code format, and the interface between the exchange and the exchange interface control lower module is a service identifier parameter and key describing various key press information for specifying a service in the exchange service control module. A key information parameter that describes the specific content of the press information is defined and notified from the exchange to the exchange, and in response to the notification, the exchange describes various display information to be displayed on the display unit of the exchange. Screen display information parameters to define Call processing interface method between switchboard and the exchange, characterized in that it responds to the serial switchboard. 2. The UNI interface, when it is necessary to activate a plurality of services in the switchboard service control module by pressing one key of the switchboard, a service corresponding to keypress information as control information. A plurality of the service identifier parameters are specified to notify the exchange, the exchange individually activates the plurality of services corresponding to the service identifier described in the service identifier parameter, and 2. The call processing interface method between a switchboard and a switch according to claim 1, wherein the key press response information, which is response information by the number of service identifiers described, is individually returned to the switchboard. 3. A call number is defined on said UNI interface, wherein said exchange is a call between an originating subscriber and said exchange.
One call number is assigned to each of the call between the exchange and the called subscriber, and the call correspondence between the exchanges between the exchanges.
When a plurality of calls are simultaneously handled by one switchboard, a plurality of the call numbers are used at the same time and notified to the switchboard, processed in the same manner as a general multi-way calling service for subscribers, and processed by the switchboard-specific processing. 2. The method according to claim 1, wherein a certain switching board disconnection process and a transfer process between the switching devices are performed in the same manner as a transfer service for general subscribers. 4. The call disconnecting process in a desk monitoring state in which a handler of the exchange intervenes in a call state between a calling subscriber and a called subscriber is performed by the calling subscriber and the called subscriber at the end of a call from the exchange. In the disconnection processing, a disconnection signal is sent to the exchange when the later disconnection processing is completed to disconnect the call, and a call that is autonomously transmitted from the exchange that has received the disconnection signal. 2. The call processing interface system according to claim 1, wherein the signal is received to regenerate a call for charge notification for billing ticket processing. 5. The language assisting call, recall after disconnection of the switchboard, and handler recall processing at the switchboard are performed by the switchboard with the display information parameter indicating predetermined display information indicating the fact in the screen display information parameter. A call signal is sent to the exchange, and the exchange determines the contents displayed on the display unit and autonomously sends a call signal to the exchange, and the exchange originates a call for one incoming call. 2. A switchboard and a switchboard according to claim 1, wherein two calls, a call corresponding to a subscriber and a call corresponding to a terminating subscriber, are simultaneously generated, and each call is brought into a communication state to be in the monitor state. Inter-call processing interface method. 6. The exchange, when the charge notification in the on-board monitoring state ends, notifies the exchange to that effect by the service identifier parameter and the key information parameter, and receives the charge notification end notification. Receiving a response message describing a predetermined reason display indicating that the autonomous transmission of the exchange is prohibited from the exchange,
2. The call processing interface method according to claim 1, wherein the contents of the reason display are determined and the call is terminated. 7. The exchange table, when performing string switching processing in a state where a plurality of strings are being controlled simultaneously, performs string switching based on the service identifier parameter and the key information parameter for a call corresponding to the string being controlled first. To the exchange,
After receiving a response from the exchange that received the string switching notification,
For a call corresponding to a string that is being controlled by string switching while not being controlled, the switch automatically notifies the exchange that string switching is to be performed using the service identifier parameter and the key information parameter. 2. The method according to claim 1, wherein the call control is performed independently of each other.