KR20010038186A - FULL ELECTRONIC SWITCHING SYSTEM HAVING A No.7 FUNCTION FOR SERVICING ORIGINATOR INFORMATION - Google Patents

Abstract

PURPOSE: A full electronic switching system having a No.7 function for caller ID service is provided to efficiently display calling subscriber information in a full electronic switching system. CONSTITUTION: An ASS-T(Access Switching Subsystem-Trunk,110) comprised of an intelligent network call processing part(111), an application service element(112), a TCAP(Transaction Capabilities Application Part,113) and an SCCP(Signal Connection Control Part,114) executes an application service function and a message routing functions in order to provide various kinds of intelligent network services. An ASS-S(Access Switching Subsystem-Subscriber,120) comprised of a CID(Calling Identify Delivery) call processing part(121), an INAP(Intelligent Network Application Part,122), a TCAP(123) and an SCCP(124) executes CID call processing, INAP processing, question and answer processing and signal connection control in order to process a caller ID service function. An ASS-7(Access Switching Subsystem-No.7) is comprised of an S7MH(Signaling System No.7 Message Handling,132) and an S7SRC(Signaling System No.7 SCCP Routing Control,131). The S7MH(132) executes No.7 message processing for a message provided through an MTP(Message Transfer Part) from the SCCP(124). The S7SRC(131) executes an SCCP message processing function for a message from an SCP(Service Control Point,140).

Description

FULL ELECTRONIC SWITCHING SYSTEM HAVING A No.7 FUNCTION FOR SERVICING ORIGINATOR INFORMATION}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic switchboard, and more particularly, to an electronic switchboard having a number seven function for displaying caller information suitable for enabling the display of caller information in the electronic switchboard.

In general, an intelligent network is a service network that processes, provides, and manages various new services quickly and easily. It is composed of a transport network layer, a signaling network layer, and a service network layer. The service network layer consists of a service control point and a service management system, the signal network layer consists of a signaling transfer point, and the transport network layer consists of an electronic switch. Service Switching Point). And each layer is SS (Signaling System) No. It is connected in 7 ways.

In connection with the present invention, FIG. 4 is a diagram illustrating a signal flow in a conventional general electronic switch, and includes an access switching subsystem (ASS-S) 410 and a trunk matching sub. System (ASS-T: Access Switching Subsystem-Trunk) 420, No.7 Matching Subsystem (ASS-7: Access Switching Subsystem-Trunk) (430), Intelligent Network Service Control Switch (SCP) 440. FIG. 5 is a diagram illustrating a protocol structure of the conventional all-electronic exchanger, which will be described below with reference to FIGS. 4 and 5.

The subscriber matching subsystem (ASS-S) 410 includes a public switched telephone network (PSTN) call processing unit 411 to perform call processing with a public switched telephone network (PSTN), and a trunk matching subsystem (ASS-T). 420 is an intelligent network call processing unit 421, a plurality of application service elements (ASE) 422, a Transaction Capability Application Part (TCAP) 423, and No. 7 A message routing control unit (S7RRC: Signaling System No. 7 Re-Routing Control) 424 that performs a message routing control function. Here, the application service element (ASE) 422, which is a higher layer of the question-and-answer function application unit (TCAP) 423, includes a plurality of elements configured separately for each intelligent network service.

In addition, the No. 7 matching subsystem (ASS-7) 430 includes an SCCP message processing unit (S7 SRC: Signaling System No. 7 SCCP Routing Control) 431 and a message transfer unit (MTP) shown in FIG. And a No. 7 message processing unit (S7MH: Signaling System No. 7 Message Handling) 432 for processing No. 7 messages from the network.

On the other hand, such a conventional electronic switch is not provided with a function to provide information on the calling subscriber to the called subscriber in the system configuration.

In other words, in order to provide the caller information display service, an intelligent network application protocol (INAP) must be present in the upper layer of the TCAP application unit, and then to the upper layer of the intelligent network application protocol unit (INAP). Must have a CID call processing unit that can manage multiple CID call processing depending on the incoming service.

In addition, in the conventional electronic switchboard, dialog numbers required for intelligent network call processing are also divided into parts for each service. If the caller information is to be serviced to most telephone users, the dialog numbers are managed in the same manner. There is a problem that not enough resources are available.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object thereof is to provide an all-electronic exchange having a number seven function for displaying caller information capable of efficiently displaying outgoing subscriber information at the all-electronic exchange.

According to an embodiment of the present invention, a trunk for performing an intelligent network service call processing function, an application service function according to an intelligent network service, and a message routing function in a method for displaying caller information in an electronic switchgear. Matching subsystem; A subscriber matching sub-system performing CID call processing, intelligent network application protocol processing, question-and-answer processing, and signal connection control functions regardless of the trunk matching subsystem to process a caller information display service function; It includes a No.7 matching subsystem that performs the No.7 message processing function for the message output and provided from the subscriber matching subsystem, and performs a signal connection control function for the message provided from the intelligent network service control switch. Provides an electronic switchgear capable of displaying caller information.

1 is a diagram showing each signal processing means for an electronic switch having a number seven function for displaying caller information according to a preferred embodiment of the present invention;

2 is a diagram illustrating a protocol structure of an electronic switchboard performing a caller information service according to a preferred embodiment of the present invention;

3 is a diagram illustrating a message flow in a caller information service process in an electronic switch according to a preferred embodiment of the present invention;

4 is a view illustrating a signal flow in a conventional general electronic switch,

5 is a diagram showing a protocol structure of a conventional all-electronic exchange.

<Description of the code | symbol about the principal part of drawing>

111: intelligent network call processor 112: application service elements

113: question and answer processing unit application section 114: signal connection control unit

121: CID call processing unit 122: intelligent network application protocol unit

123: question and answer processing function application unit 124: signal connection control unit

131: SCCP message processing unit 132: No.7 message processing unit

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

FIG. 1 is a diagram illustrating each signal processing means of an electronic switching system capable of calling party information service according to a preferred embodiment of the present invention, and includes a trunk matching subsystem (ASS-T) 110 and a subscriber matching subsystem (ASS-). S) 120, No. 7 match exchange subsystem (ASS-7) 130, and intelligent network service control exchange (SCP) 140.

2 is a diagram illustrating a protocol structure of an electronic switchboard that performs a caller information service according to a preferred embodiment of the present invention.

1 and 2 will be described in detail with the caller information service method in the electronic switch according to the present invention.

First, referring to FIG. 1, the trunk matching subsystem (ASS-T) 110 may include an intelligent network call processing unit 111, an application service element (ASE) 112, and a question-and-answer function application unit as shown in FIG. (TCAP) 113, the signal connection control unit (SCCP) 114, and performs the intelligent network service call processing function and application service functions and message routing functions for providing various kinds of intelligent network services.

The subscriber matching subsystem (ASS-S) 120 may include a Calling Identify Delivery (CID) call processing unit 121, an intelligent network application protocol unit (INAP) 122, a question-and-answer function application unit (TCAP) 123, Signal connection control unit (SCCP) 124, and unlike the conventional electronic switch to handle the caller information display service function according to the present invention, CID independent of the trunk matching subsystem (ASS-T) 110 It performs functions such as call processing and intelligent network application protocol processing, question and answer processing, and signal connection control.

The No. 7 matching subsystem (ASS-7) 130 is output from the SCCP 124 of the subscriber matching subsystem (ASS-S) 120 to provide a message transfer unit (MTP) of the protocol structure shown in FIG. SCCP messages that perform SCCP message processing functions for messages from No.7 message processing unit (S7MH) 132 and intelligent network service control exchange (SCP) 140 that perform No.7 message processing on messages provided through the It is configured to include a processing unit (S7SRC) (131).

Meanwhile, according to the present invention, the intelligent network application protocol unit (INAP) 122 and the question-and-answer function application unit (TCAP) 123 shown in FIG. 1 are blocks provided only to support the caller information display service. In addition, the CID call processor 121 includes a basic call processing service block (ASC), a call waiting service block (CAWC), a call waiting service block (CFWC), and the like, which are not shown depending on the incoming service. INAP) 122 is configured to interface with all of these blocks.

In addition, the intelligent network application protocol unit (INAP) 122 manages the dialog ID required for CID call processing as a whole without distinguishing each service, and the CID call processor 121 manages the intelligent network service control exchange (SCP) 140. In the process of transmitting an InitiaIDP operation to access a name database system (not shown) in the CQS), an intelligent network application protocol unit (INAP) 122 transmits the service type and the CID call processor. The process ID of 121 is stored in the dialog ID management buffer (not shown). When a response is received from the database system, the response message is sent to the process ID in the corresponding dialog ID. Here, the above service types include basic call processing service (ASC), call waiting service (CAWC), call waiting service (CFWC), and the like.

In addition, when the CID call processing unit 121 is restarted, all dialogs related to the corresponding service must be terminated and the buffers must be initialized. In this case, the service that is re-executed for processing within the range that does not affect other services at all is required. Initializes all dialogs that have a type and that are assigned the corresponding service type in the dialog ID management buffer.

FIG. 3 is a diagram illustrating a message flow in a caller information service process in an electronic switch according to a preferred embodiment of the present invention. Referring to FIG.

First, among caller information display services in basic call processing service (ASC), call waiting service (CAWC), call waiting service (CFWC), etc. of CID call processing unit 121 in subscriber matching subsystem (ASS-S) 120 If access to the name database system (not shown) in the intelligent network service control exchange 140 is required, an InitiaIDP operation including the originating subscriber number and service type is sent to the intelligent network application protocol unit (INAP) 122. Done.

The intelligent network application protocol unit (INAP) 122 performs an encoding function on the received parameter InitiaIDP, and if an error is detected, transmits error information to the call processing unit. Set the dialog ID, service type, and call process ID set in the dialog ID management buffer by setting the dialog ID required for processing, and assign the TC_INVOKE request component and the TC_BEGIN request dialog primitive (TCAP) (123). To send).

The question and answer function application unit (TCAP) 123 receives an encoded component corresponding to the received dialog, reconstructs it, creates user data, forms a transaction processing primitive, and transmits an N_UNITDATA request primitive to the SCCP 124.

The SCCP 124 assigns a signaling point code and a subsystem number to the originating / receiving address area for the received TCAP message, assigns a protocol class and a routing label, and assigns a No. 1 through the MTP_TRANSFER request primitive. 7 is sent to the No. 7 message processing unit (S7MH) 132 in the matching subsystem (ASS-7) 130.

No.7 message processing unit (S7MH) 132 checks the incoming signal point state, the signal route, and the signal link state according to the routing label for the received message, and then, if it is normally accessible, the corresponding signal terminal (not shown). Message is sent to the destination signaling point (name data system). When the result is again received from the name database system in the intelligent network service control exchange (SCP) 140, it is transmitted to the SCCP message processing unit (S7SRC) 131 using the MTP_TRANSFER indication primitive.

The SCCP message processing unit (S7SRC) 131 checks whether the state of the local subsystem is normal for the received message, and corresponds to the corresponding subscriber matching subsystem (ASS-S) according to the transaction ID included in the message. The processor ID of 120 is calculated and the N_UNITDATA indication primitive is transmitted to the TCAP 123.

The question and answer processing function application unit (TCAP) 123 checks the syntax error, etc. for the part related to the transaction unit with respect to the message received from the SCCP message processing unit (S7SRC) 131, and checks the result of the dialogue processing unit. The dialogue processing unit checks the syntax error for the corresponding dialogue unit in the received primitive and transmits it to the intelligent network application protocol unit (INAP) 122 through the TC_END indication primitive.

Also, if there is no abnormality, the Syntax error is checked according to the processing status for each grade of the received operation and transmitted to the intelligent network application protocol unit (INAP) through the TC_INVOKE indication primitive.

On the other hand, the intelligent network application protocol unit (INAP) 122, upon receiving the TC_END indication primitive checks the presence or absence of the component, if there is a component accepts and processes the component primitives, and returns all resources associated with the dialog. When the TC_INVOKE indication primitive is received, the error state is checked, and if the component message is normal, the decoding procedure is performed, the CID call processor process ID is calculated from the buffer with the corresponding dialog ID, and the CID call processor 121 continues with By sending the Argument operation, the signal processing for displaying the caller information is completed.

As a result, according to the present invention, the trunk matching subsystem (ASS-T) 110 allows a conventional general network service function to be handled, and the caller ID service is independent of the network service. -S) 120 performs functions such as CID call processing, intelligent network application protocol processing, Q & A processing, signal connection control, etc., and No.7 message processing in No.7 matching subsystem (ASS-7) 130. Function (S7MH) and SCCP message processing function (S7SRC).

In particular, the intelligent network application protocol unit (INAP) and the question-and-answer function application unit (TCAP) are blocks provided to support only the CID service, and the signal connection control and signal transfer functions are made by using the functions used in the conventional intelligent network service. The new service, that is, the caller information display service, becomes possible without affecting the service provided in the existing No.7 signaling network.

In addition, the intelligent network application protocol unit (INAP) 122 integrates and manages the dialog ID required for the CID call processing by service, and the CID call processing unit 121 classifies the intelligent network service control exchange (SCP). When the InitiaIDP operation is sent to access the name database system in the server 140, its service type is sent together, and the network application protocol unit (INAP) has this type information, and performs dialog ID management and initialization of various buffers. Therefore, even if multiple intelligent network application protocol units (INAP) exist, they can be easily managed.

As described above, according to the present invention, there is an effect that the caller information can be serviced without affecting the existing intelligent network service by using an electronic switch using No. 7 signaling network.

Claims (3)

In the electronic switchboard having a No. 7 function for displaying caller information, A trunk matching subsystem for performing an intelligent network service call processing function, an application service function and a message routing function according to the intelligent network service; A subscriber matching sub-system performing CID call processing, intelligent network application protocol processing, question-and-answer processing, and signal connection control functions regardless of the trunk matching subsystem to process a caller information display service function; A sender including a No.7 matching subsystem that performs a No.7 message processing function on a message output and provided from the subscriber matching subsystem, and performs a signal connection control function on a message provided by an intelligent network service control switch. Electronic switchboard with number seven function for displaying information. The system of claim 1, wherein the trunk matching subsystem includes an intelligent network call processing unit, a plurality of application service elements, a question-and-answer function application unit, a signal connection control unit, The subscriber matching subsystem includes a Calling Identify Delivery (CID) call processing unit, an intelligent network application protocol unit (INAP), a question-and-answer function application unit (TCAP), a signal connection control unit (SCCP), And an No. 7 matching subsystem comprising a No. 7 message processing unit (S7MH) and an SCCP message processing unit (S7SRC). The method of claim 2, wherein the CID call processing unit manages the dialog ID required for the CID call processing as a whole without distinguishing each service, and when the CID call processing unit is restarted, all dialogs related to the service are restarted. Terminating and initializing all dialogs having a type of the service to be re-executed and assigned a corresponding service type in a dialog ID management buffer.