KR0179504B1 - Method for processing message of system internal call processing protocol in atm virtual channel switch - Google Patents

Abstract

The present invention provides a method for processing an internal system call processing protocol message for call processing matching between a subscriber matching call processing block and a network matching call processing block in an asychronous transfer mode (ATM) virtual channel (VC) virtual exchange system. A system internal protocol message for call processing matching between a subscriber matching call processing block and a network matching call processing block in an ATM VC exchange system is provided with an external matching protocol (Q.2931, BISUP) and a call type (local call, outgoing). By defining as independent as possible for each call, incoming call, and relay call, the internal matching structure between call processing and the type of processing program can be unified to shorten the design and implementation period of the program, and to facilitate related programs. There is a testable effect.

Description

System Internal Call Processing Protocol Message Processing Method in Asynchronous Transfer Mode Virtual Channel Switch

1 is a diagram illustrating a configuration of an asynchronous transfer mode virtual channel (ATM VC) switch to which the present invention is applied.

2 is a flowchart illustrating a method for processing an internal system call processing protocol message in a local call processing according to the present invention.

3 is a temporary flowchart illustrating a method for processing an internal system call processing protocol message during incoming call processing according to the present invention.

4 is a flowchart illustrating a method for processing an internal system call processing protocol message during outgoing call processing according to the present invention.

5 is a flowchart illustrating a method for processing an internal system call processing protocol message during relay call processing according to the present invention.

* Explanation of symbols for main parts of the drawings

110: ALS (ATM L Central Central Substem)

120: ATM Central Switching Subsystem

111,121: AGIA (Alarm Gethering Inerface board Assembly)

112: Call Connection Control Processor (CCP)

122: operation maintenace processor (OMP)

The present invention provides a method for processing an internal system call processing protocol message for call processing matching between subscriber matching call processing blocks and network matching call processing blocks in an asychronous transfer mode (ATM) virtual channel (VC) exchange system. It is about.

Conventionally, internal call processing protocol messages for call processing matching between subscriber matching call processing blocks and network matching call processing blocks in an ATM VC switching system are combined with external matching protocols Q. 2931 and BISUP (Broadband ISDN Signaling User Part). Dependent on the type of call (ie national call, outgoing call, incoming call, relay call). For this reason, conventionally, various internal protocols are required according to a combination of external protocols and call types, and the internal matching structure between call processings is complicated. There was a problem.

Therefore, in order to unify the internal matching structure between call processings in the ATM VC switching system and to unify the types of processing programs to facilitate the design / implementation / testing of programs, subscriber matching call processing blocks in the ATM VC switching system and network matching It is essential to define and design the system internal protocol message for call processing matching between call processing blocks as independently as possible according to the external matching protocol and call type.

The present invention devised to meet the requirements as described above, according to the call processing protocol message in the ATM VC switching system according to the type of the call is processed, that is, the local call, outgoing call, System call processing protocol message applied to incoming call processing is defined unified in the form similar to Q.2931, subscriber matching protocol, regardless of the type of call processed, and applied to relay call processing interworking between network matching blocks. The internal call processing protocol message is defined in a form similar to the network matching protocol BISUP, so that the internal matching structure between call processing is unified and the types of processing programs are unified to facilitate the design, implementation, and testing of the program. The purpose is to provide a protocol message processing method.

In order to achieve the above object, the present invention provides a method for processing a system internal call processing protocol message during a local call processing applied to an asynchronous transfer mode switch, wherein a setup message is received from an originating terminal. Transmitting a Call Proceeding message and a Setup_U internal message to the calling terminal and the called subscriber matching block, respectively; Transmitting a setup message and a call procedure (CALL_PROCEEDING) internal message from the subscriber matching block to the called terminal and the calling subscriber matching block, respectively; And a third step of performing information / progress, connection, and release processes between the subscriber matching block and the calling subscriber matching block, respectively, according to the type of message received from the called terminal.

In addition, in order to achieve the above object, the present invention provides a method for processing an internal call processing protocol message in an incoming call processing applied to an asynchronous delivery mode switch, when an initial address message is received from an originating exchange. A first step of sending an initial address acknowledgment message and a setup_u message from the incoming network matching block to the calling exchange and the called subscriber matching block, respectively; Transmitting a setup message call procedure message from the called subscriber matching block to the called terminal and the incoming network matching block, respectively; And a third step of performing an alarm / progress, connection, and release process between the called subscriber matching block and the incoming network matching block according to the type of the message received from the called terminal.

In addition, in order to achieve the above object, the present invention provides a system internal call processing protocol message processing method for relay call processing applied to an asynchronous delivery mode switch, when an initial address message is received from an originating exchange. Transmitting an initial address acknowledgment message and an initial address message IAM from an incoming network matching block to the originating exchange and the outgoing network matching block, respectively; Transmitting an initial address message (IAM) and an initial address acknowledgment (IAA) from the originating network matching block to the destination exchange and the incoming network matching block, respectively; And a third address for transmitting an address complete message (ACM), response message (ANM), and release (REL) message received from the destination exchange in the outgoing network matching block to the originating exchange through the incoming network matching block, respectively. Steps.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exemplary configuration diagram of an ATM VC exchange to which the present invention is applied, and shows an alarm delivery system in which an alarm source collected from an alarm collecting device AGIA is reported to the OMP 122.

As shown in FIG. 1, the ATM VC switch to which the present invention is applied is composed of an ATM Local Central Subsystem (ALS) 110 and an ATM Central Switching Subsystem (ACS) 120.

The ALS 110 includes a basic rate subscriber interface module (BSIM), a medium rate subscriber interface module (MSIM) and a low rate subscriber interface module (LSIM), a trunk interface module (TIM), the BSIM, MSIM, LSIM, And an Access Switching Network Module (ASNM) connected to a TIM, a Cell Multiplexer / Demultiplexer hareware Block (CMDH) that transmits a signal to the ASNM through IMI communication, and is connected to the CMDH to perform maintenance of an ALS 110 control system. The CCCP (Call Connection Control Processor) 112, which is a maintenance processor, and an alarm signal generated by each hardware constituting the ALS 110 are collected and the CCCP 112 is connected to the CCCP 112 through an EIA-232C serial communication port. It consists of an alarm collecting device (AGIA) that reports an alarm signal.

The ACS 120 includes an Interconnection Switch Network Module (ISNM) connected to the ASNM through IMI communication, a CMDH transmitting a signal to the ISNM through IMI communication, and a maintenance of an ACS 120 control system connected to the CMDH. It collects the alarm signal generated from each hardware constituting the ACS 120 and the operation maintenance processor (OMP) 122, which is in charge of the maintenance processor, and sends it to the OMP 122 through the EIA-232C serial communication port. The AGIA 121 is configured to report an alarm signal, and the AGIA 121 and the AGIA 111 are connected by an alarm cable.

The ATM VC exchange to which the present invention with the above configuration is applied collects up to 128 failures (i.e., alarm sources of hardware) occurring in each subsystem (ALS 110, ACS 120), The aggregated alarm state is quickly and effectively transmitted to the CCCP 112, which is the upper processor, and the OMP 122, which is the system operation maintenance processor.

For example, alert source data collected by AGIA 111 of the ALS 110 are reported to OMP 122 by IMI communication along an Inter Processor Communication (IPC) path via CCCP 112 and the ACS Alert source data collected by AGIA 121 of 120 are reported directly to OMP 122.

The types of alarms handled by the ATM VC exchange system include hermetic alarm (EF), function failure (FF), power failure (PF), and redundant failure alarm (DF: dual fail). There is a malfunction of the input power (-48Vdc) of the rack, fan unit malfunction and temperature sensor, and AGIA 111, 121 collects these hardware alarm sources from the alarmed devices.

The collection of these alarms is done in parallel (when IPC communication is available and when IPC communication is not possible), either by software or by hardware. Each control device (processor or controller) is under its control. Failure alerts that are not capable of collecting fault status by the software method for the device are collected by the AGIA 121 of the ACS 120 in hardware.

When the alert of the ATM exchanger is received by the AGIA 111, the AGIA 11 reports it to the CCCP 112, which is a higher processor, through the EIA-232C communication port, which is then transmitted to the ASNM and ISNM paths by IMI communication. The ISNM is then finally reported to the OMP 122 by IMI communication.

In the process, if the alarm occurrence report is discontinued due to the failure or failure of the CCCP 112, it is reported to the OMP 122 by the alarm cable interconnecting the AGIAs 111 and 121 between the ALS 110 and the ACS 120. The data of the EIA-232C communication is an 8-bit character code.

For the sake of understanding, the alarm collecting device (AGIA) 111 and 121 will be described in more detail.

The AGIAs 111 and 121 are designed to collect fault alert sources that are mounted on the ALS 110 and the ACS 120, respectively, that cannot be collected as IPC messages from the alarmed devices.

Three IPC failure sources (ASNM, CMDH dual down, ASMP down) are allocated per ALS 110. The structure of FIG. 1 is collected from the alarmed devices when the system is in a normal state (i.e., IPC communication is possible). Source shows the reported path to OMP 122.

Now, look at the alarm delivery system according to the availability of IPC communication in detail as follows.

Now, when IPC communication is possible, the alert delivery scheme by IPC communication is as shown in FIG. Here, the dotted line is the alarm source collected on a hardware backboard basis, and is a system in which the ASMP is reported to the upper side by IPC communication by being transmitted to the CCCP 112. At this time, when the alarm source collected by the CCCP 112 is reported as higher, it is reported as the path AGIA 111 → CCCP 112 → CMDH → ASNM → ISNM → CMDH → OMP 122.

When IPC communication is not possible (ie, the system is abnormal), the AGIA 111 of the ALS 110 is reported to the OMP 122 via an alert cable.

Specifically, when the IPC communication is not possible due to an error of the AGIA 111 → ASMP → ISN → OMP 122 on the ALS 110 side, the ASIA, CDMH, The failure status of each ASNM is monitored in hardware so that when a failure alarm occurs, it is notified directly to the AGIA 121 of the ACS 120.

As described above, in case of an abnormal IPC path, the AGIA 111 of the ALS 110 delivers the collected hardware alert source to the OMP 122 of the ACS 120 via an alert cable.

2 is a flowchart illustrating a method for processing a system internal call processing protocol message in a local call processing according to the present invention.

As shown in FIG. 2, in the system call processing protocol message processing method of the home call processing according to the present invention, first, when a setup message is received from the calling terminal in the calling party matching block (1), A Call Proceeding message is transmitted from the subscriber matching block to the calling terminal (2), and an internal message of SETUP_U is sent to the called subscriber matching block (3).

Thereafter, a setup message is sent from the called subscriber matching block, which receives the setup_U internal message from the calling subscriber matching block, to the called terminal (4), and the call procedure (CALL_PROCEEDING) internal message is sent to the calling subscriber matching block. (5).

Next, if a Call Proceeding message is received from the called terminal in the called subscriber matching block (6), the called subscriber matching block does not send the message to the calling subscriber matching block.

When an alerting or progress message is received from the called terminal in the called subscriber matching block (7), an alerting or progressing internal message is sent from the called subscriber matching block to the calling subscriber matching block. (8), the originating subscriber matching block that receives it sends an alerting or progress message to the calling terminal (9).

In addition, when a connect message is received from the called terminal in the called subscriber matching block (10), the connect subscriber matching block sends a connect acknowledgment message to the called terminal (11), and connects to the calling subscriber matching block. (CONNECT) Send an internal message (12). Thereafter, in step 13, a connection message is transmitted from the calling subscriber matching block to the calling terminal, which has received the CONNECT internal message from the called subscriber matching block. At this time, if a connect acknowledgment message is received from the calling terminal in the calling subscriber matching block (14), the calling subscriber matching block does not send the message to the called subscriber matching block.

Finally, when a release message is received from the called terminal in the called subscriber matching block (15), the release acknowledgment message is sent from the called subscriber matching block to the called terminal (16) and sent to the calling subscriber matching block. A RELEASE internal message is sent (17). Thereafter, a release message is transmitted from the calling party matching block to the calling terminal (18). At this time, if a Release Acknowledge message is received from the calling terminal in the calling subscriber matching block (19), the calling subscriber matching block does not send the message to the called subscriber matching block.

3 is a flowchart illustrating a method for processing an internal system call processing protocol message during incoming call processing according to the present invention.

As shown in FIG. 3, in the system call processing protocol message processing method for incoming call processing according to the present invention, if a setup message is first received from an originating terminal in an originating subscriber matching block (20), A call proceeding message is transmitted from the calling subscriber matching block to the calling terminal (21), and the setup_N (SETUP_N) internal message is sent to the outgoing network matching block (22).

Subsequently, an IAM (Initial Address Message) message is sent from the originating network matching block to the destination exchange in the outgoing network matching block that receives the setup_N (SETUP_N) internal message from the calling subscriber matching block (23), and the call procedure (CALL) to the calling subscriber matching block PROCEEDING) sends an internal message (24).

Next, if an IAA (Initial Address Message Acknowledgment) message is received from the destination exchange (25) at the called party matching block, the outgoing network matching block does not send the message to the calling party matching block.

When an ACM message is received in the outgoing network matching block from the destination exchange (26), the outgoing network matching block is alerted or progressed according to the ACM message content from the outgoing network matching block to the originating subscriber matching block. The internal message is sent (27), and the originating subscriber matching block that receives it sends an alerting or progress message to the calling terminal (28).

In addition, when an ANM (Answer Message) message is received from the destination exchange in the outgoing network matching block (29), the outgoing network matching block transmits a CONNECT internal message from the outgoing network matching block to the calling subscriber matching block (30). At this time, the originating subscriber matching block receiving the CONNECT internal message from the outgoing network matching block transmits a connect message to the calling terminal (31). Thereafter, if a connect acknowledgment message is received from the originating terminal in the originating subscriber matching block (32), the originating subscriber matching block does not send the message to the outgoing network matching block.

Finally, when the REL (Release) message is received from the destination exchange in the outgoing network matching block (33), the outgoing network matching block sends a Release Complete (RLC) message to the destination exchange (34), and the outgoing subscriber matching block The RELEASE internal message is transmitted (35). Thereafter, a release message is transmitted from the calling subscriber matching block to the calling terminal (36). At this time, if a Release Acknowledge message is received from the calling terminal in the calling subscriber matching block (37), the calling subscriber matching block does not send the message to the outgoing network matching block.

4 is a flowchart illustrating a method for processing an internal system call processing protocol message during outgoing call processing according to the present invention.

As shown in FIG. 4, in the system call processing protocol message processing method for outgoing call processing according to the present invention, when an IAM message is received from an originating exchange in an incoming network matching block (38), the incoming network The IAA message 39 is sent from the matching block to the originating exchange and the setup_U internal message is sent 40 to the called subscriber matching block.

Subsequently, a setup message is sent from the called subscriber matching block, which receives the setup_U internal message from the incoming network matching block, to the called terminal (41), and the call procedure (CALL PROCEEDING) internal message is sent to the incoming network matching block. (42).

Next, if a Call Proceeding message is received from the called terminal in the called subscriber matching block (43), the called subscriber matching block does not send the message to the incoming network matching block.

When an alerting or progress message is received from the called terminal in the called subscriber matching block (44), an alerting or progressing internal message is sent from the called subscriber matching block to the incoming network matching block. In step 45, the incoming network matching block receives the ACM message to the originating exchange (46).

In addition, when a connect message is received from the called terminal in the called subscriber matching block (47), the connection acknowledgment message is sent from the called subscriber matching block to the called terminal (48), and the incoming network matching block is sent to the incoming network matching block. Send a CONNECT internal message (49). Subsequently, the incoming network matching block receiving the CONNECT internal message from the called subscriber matching block sends an ANM message to the calling exchange (50).

Finally, when a release message is received from the called terminal in the called subscriber matching block (51), the release acknowledgment message is sent out to the called terminal in the called subscriber matching block (52), and the incoming network matching is performed. A RELEASE internal message is sent to the block (53). Thereafter, the REL message is sent from the incoming network matching block to the originating exchange (54). At this time, if the RLC message is received from the originating exchange in the incoming network matching block (55), the incoming network matching block does not send the message to the called subscriber matching block.

5 is a flowchart illustrating a method for processing an internal system call processing protocol message during relay call processing according to the present invention.

As shown in FIG. 5, in the system call processing protocol message processing method for relay call processing according to the present invention, when an IAM message is received from an originating exchange in an incoming network matching block (56), the incoming network The IAA message is sent from the matching block to the calling exchange (57), and the IAM internal message is sent (58) to the outgoing network matching block.

Thereafter, in the outgoing network matching block that receives the IAM internal message from the incoming network matching block, the IAM message is sent to the destination exchange (59), and the IAA internal message is sent to the incoming network matching block (60).

Next, if an IAA message is received from the destination exchange in the outgoing network matching block (61), the outgoing network matching block does not send the message to the incoming network matching block.

When the ACM message is received from the destination exchange in the outgoing network matching block (62), the outgoing network matching block sends an incoming network matching block ACM message in the outgoing network matching block (63). ACM message is sent to the exchange (64).

In addition, when the ANM message is received from the destination exchange in the outgoing network matching block (65), the ANM internal message is sent from the outgoing network matching block to the incoming network matching block (66), and the incoming network matching block is received. Sends an ANM message to the originating exchange (67).

Finally, when the REL message is received from the destination exchange in the outgoing network matching block (68), the PLC message is sent from the outgoing network matching block to the destination exchange (69), and the REL internal message is sent to the incoming network matching block. (70). Subsequently, the REL message is sent from the incoming network matching block to the originating exchange (71). At this time, if the incoming network matching block receives the RLC message from the originating exchange (72), the incoming network matching block does not send the message to the outgoing network matching block.

As described above, the present invention defines and designs a call processing protocol message inside an ATM VC switch system by dividing it into two types as follows. That is, the system internal call processing protocol message applied to the local call, outgoing call, and incoming call processing in which subscriber matching block and network matching block interwork is similar to Q. 2931, subscriber matching protocol. The system internal call processing protocol message applied to relay call processing interworking between network matching blocks is defined in a similar form to BISUP, a network matching protocol.

Therefore, according to the above, the present invention provides a system internal protocol message for call processing matching between a subscriber matching call processing block and a network matching call processing block inside an ATM VC exchange system and a call with an external matching protocol (Q. 2931, BISUP). By defining as independent as possible for the types (localized, outgoing, incoming and outgoing calls), you can shorten the design and implementation period of the program by unifying the internal matching structure and unifying the types of processing programs among the call processing. It is effective to easily test related programs.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.

Claims (17)

A method for processing a system internal call processing protocol message in a local call processing applied to an asynchronous delivery mode switch, wherein when a setup message is received from an originating terminal, a call is made from the calling party matching block to the calling terminal and the called subscriber matching block. Transmitting a Call Proceeding message and a Setup_U internal message, respectively; Transmitting a setup message and a CALL_PROCEEDING internal message from the called subscriber matching block to the called terminal and the calling subscriber matching block, respectively; And a third step of respectively performing an alarm / progression connection and release process between the subscriber matching block and the calling subscriber matching block according to the type of message received from the called terminal. How to handle the system internally. The method of claim 1, wherein the third step comprises: a fourth step of not sending a message from the called subscriber matching block to the calling subscriber matching block when a call proceeding message is received from the called terminal; A fifth step of, when an alerting or progress message is received from the called terminal, transmitting an alerting or progress message from the called subscriber matching block to the calling terminal; Transmitting a Connect message from the called subscriber matching block to the calling terminal in response to receiving a Connect message from the called terminal; And when a release message is received from the called terminal, when a release message is received from the called subscriber matching block to the calling terminal, a release message is sent from the called subscriber matching block to the calling terminal. Method for processing a system internal call processing protocol message in an asynchronous delivery mode virtual channel switch comprising the seventh step. The method of claim 2, wherein in the fifth step, when an alerting or progress message is received from the called terminal, alerting or progressing from the called subscriber matching block to the calling subscriber matching block. 8) sending a message; And a ninth step of transmitting an alerting or progress message from the calling subscriber matching block to the calling terminal, which has received an alerting or progress message from the called subscriber matching block. Method of processing system internal call processing protocol message in asynchronous delivery mode virtual channel exchange. The method of claim 2 or 3, wherein in the sixth step, when a Connect message is received from the called terminal, a Connect Acknowledge message is sent from the called subscriber matching block to the called terminal. Transmitting a Conncet message to the calling subscriber matching block; And an eleventh step of receiving a connect acknowledgment message from the calling terminal by transmitting a connect message from the calling subscriber matching block to the calling terminal from the calling subscriber matching block. System internal call processing protocol message processing method in an asynchronous delivery mode virtual channel exchange made including. The method of claim 4, wherein in the seventh step, when a release message is received from the called terminal, a release acknowledgment message is sent from the called subscriber matching block to the called terminal, and the calling subscriber matching is performed. A twelfth step of transmitting a release message to a block; And a thirteenth step of receiving a release acknowledgment message from the calling terminal by sending a release message from the calling subscriber matching block to the calling terminal in the calling subscriber matching block that has received a release message from the called subscriber matching block. System internal call processing protocol message processing method in an asynchronous delivery mode virtual channel exchange made including. In the system call processing protocol message processing method for outgoing call processing applied to an asynchronous delivery mode switch, when a setup message is received from the calling terminal, the calling party matching block is transferred from the calling subscriber matching block to the calling terminal and outgoing network matching block. Transmitting a Call Proceeding message and a Setup_N message, respectively; Transmitting an initial address message and a call procedure message from the originating network matching block to the called exchange and the calling subscriber matching block, respectively; And a third step of respectively performing an alarm / progress, connection, and release process between the outgoing network matching block and the calling subscriber matching block according to the type of message received from the destination exchange. Method of processing system internal call processing protocol message in channel exchange. 7. The method of claim 6, wherein the third step comprises: when the initial address acknowledgment message is received from the destination exchange, not sending a message from the outgoing network matching block to the calling subscriber matching block; step; A fifth step of transmitting an alerting or progress message from the outgoing network matching block to the calling terminal when an address complete message is received from the called exchange; Transmitting a connect message from the outgoing network matching block to the calling terminal when an answer message is received from the called exchange; And a seventh step of transmitting a release message from the outgoing network matching block to the calling terminal when a release message is received from the destination exchange. How to handle call processing protocol messages. The method as claimed in claim 7, wherein the fifth step further comprises: when an address complete message (ACM) is received from the destination exchange, alerting according to the contents of an address complete message (ACM) from the outgoing network matching block to the calling subscriber matching block. An eighth step of transmitting an (Alerting) or Progress message; And a ninth step of sending an alerting or progressing message from the originating subscriber matching block to the calling terminal in response to receiving an alerting or progressing message from the outgoing network matching block. System internal call processing protocol message processing method in asynchronous delivery mode virtual channel exchange. The method of claim 7 or 8, wherein in the sixth step, when a response message (ANM) is received from the destination exchange, the outgoing network matching block sends a connect message from the outgoing network matching block to the calling subscriber matching block. Tenth step; And an eleventh step of receiving a connect acknowledgment message by transmitting a connect message from the originating subscriber matching block to the calling terminal in the outgoing subscriber matching block receiving the connect message from the outgoing network matching block. System internal call processing protocol message processing method in asynchronous delivery mode virtual channel exchange. 10. The method of claim 9, wherein in the seventh step, when a release message is received from the destination exchange, the outgoing network matching block sends a release completion (RLC) message to the destination exchange, and the originating subscriber matching is performed. A twelfth step of transmitting a release message to a block; And a thirteenth that sends a release message from the originating subscriber matching block to the calling terminal in response to receiving the release message from the outgoing network matching block and receives a release acknowledgment message from the calling terminal. A method for processing an internal system call processing protocol message in an asynchronous delivery mode virtual channel exchange comprising a step. In the system call processing protocol message processing method for incoming call processing applied to an asynchronous delivery mode switch, when an initial address message is received from an originating exchange, an originating exchange and a called subscriber are received at an incoming network matching block. Sending a Initial Address Message Acknowledgement message and a Setup_U message to the matching block, respectively; Transmitting a setup message and a call procedure message from the called subscriber matching block to the called terminal and the incoming network matching block, respectively; And a third step of performing an alarm / progress, connection, and release process between the called subscriber matching block and the incoming network matching block according to the type of message received from the called terminal. Method of processing system internal call processing protocol message in exchange. 12. The method of claim 11, wherein the third step comprises: a fourth step of not sending a message from the called subscriber matching block to the incoming network matching blow when a Call Proceeding message is received from the called terminal; A fifth step of, when an alerting or progress message is received from the called terminal, sending an address complete message from the called subscriber matching block to the calling exchange; Transmitting a response message (ANM) from the called subscriber matching block to the calling exchange when the connect message is received from the called terminal; And a seventh step of, when the release message is received from the called terminal, sending a release message to the calling exchange in the called subscriber matching block to receive a release completion (RLC) message from the calling exchange. Method of processing system internal call processing protocol message in delivery mode virtual channel exchange. The method of claim 12, wherein in the fifth step, when an alerting or progress message is received from the called terminal, alerting or progressing from the called subscriber matching block to the incoming network matching block. Progress) transmitting the message; And a ninth step of sending an address completion message (ACM) to the originating exchange in the incoming network matching block that has received an alerting or progress message from the called subscriber matching block. Method of processing system internal call processing protocol message in virtual channel exchange. The method of claim 12 or 13, wherein, in the sixth step, when a Connect message is received from the called terminal, a Connect Acknowledge message is sent from the called subscriber matching block to the called terminal. A tenth step of transmitting a connect message to an incoming network matching block; And an eleventh step of sending a response message (ANM) to the originating exchange in the incoming network matching block receiving the connect message from the called subscriber matching block. How to handle internal call processing protocol messages. 15. The method of claim 14, wherein in the seventh step, when a release message is received from the called terminal, a release acknowledgment message is sent from the called subscriber matching block to the called terminal, and the incoming network is received. A twelfth step of transmitting a release message to the matching block; And a thirteenth (13) for receiving a release complete (RLC) message from the originating exchange by sending a release (REL) message to the originating exchange in the incoming network matching block that receives the release message from the called subscriber matching block. A method for processing an internal system call processing protocol message in an asynchronous delivery mode virtual channel exchange comprising a step. In an internal system call processing protocol message processing method for relay call processing applied to an asynchronous delivery mode exchange, when an initial address message is received from an exchange, the originating exchange and outgoing network matching is performed in an incoming network matching block. Sending an initial address acknowledgment message and an initial address message IAM to the block, respectively; Transmitting an initial address message (IAM) and an initial address acknowledgment (IAA) from the originating network matching block to the destination exchange and the incoming network matching block, respectively; And a third address for transmitting an address complete message (ACM), response message (ANM), and release (REL) message received from the destination exchange in the outgoing network matching block to the originating exchange through the incoming network matching block, respectively. A method for processing an internal system call processing protocol message in an asynchronous delivery mode virtual channel exchange comprising a step. 17. The method of claim 16, wherein the third step comprises: a fourth step of not sending a message from the outgoing network matching block to the incoming network matching block when an initial address acknowledgment (IAA) message is received from the destination exchange; A fifth step of transmitting an address complete message (ACM) from the originating network matching block to the originating exchange through the incoming network matching block when the address completion message (ACM) is received from the destination exchange; Transmitting a response message (ANM) from the originating network matching block to the originating exchange through the incoming network matching block when the response message (ANM) is received from the destination exchange; When a release (REL) message is received from the destination exchange, the originating network matching block sends a release completion (RLC) message to the destination exchange, and sends a release (REL) message to the incoming network matching block. Step 7; And an eighth step of transmitting a release (REL) message from the incoming network matching block to the originating exchange and receiving a release complete (RLC) message from the originating exchange. How to handle call processing protocol messages.