KR950011474B1 - An electronic exchager - Google Patents

Abstract

forming a restarting message transmitted to free phone/credit call service control blocks to transmit the restarting message to a free phone/credit call application service element, operating a restarting management timer and waiting a response to an initiating message from a corresponding application process; if no response exists, transmitting the restarting message transmitted to free phone/credit call operation executing blocks and checking whether an originating part value is the same as the transaction capabilities application part value; if same, receiving a response from a signalling connection part; if the response is received, initiating data associated with all services, forming an initiating message which is transmitted to a dialogue handling block, and transmitting the initiating message to the free phone/credit call application service element; and if not same, forming an initiating message which is directly transmitted to free phone/credit call operation executing blocks to application service element to transmit the initiating message to the free phone/credit call application service element.

Description

Restart method of the Q & A function application part of SSP No.7 signal system

1 is a schematic configuration diagram of a service exchanger to which the present invention is applied.

2 is a structural diagram of an intelligent network service control unit.

3 illustrates one embodiment of a message and message element used for restart.

4 is a diagram illustrating one embodiment of a restart management table used for restarting.

5 is a restart processing flowchart of the question-and-answer function application unit according to the present invention.

* Explanation of symbols for main parts of the drawings

9: Q & A function application part 10: CHA

11: DHA 12: THA

13: SCCP 14: MTP

15: BCPI 16: FPSM

17: FPSC 18: FPOE

19: FPDO 20: CCSM

21: CCSC 22: CCOE

23: CCDO 27: Application Service Element (ASE)

The present invention relates to a restart method of a Layer 7 Protocol Question Capability Application Part (TCAP) among NO.7 signaling protocols of a service exchange.

No.7 signaling protocol and user part of SSP that provides intelligent network service are mounted on the same processor and process several services at the same time. The user unit of the Q & A function application unit is generated for each service and needs to suspend the function by refining the function by processing the corresponding service or improving the function during the service processing. In addition, restart methods should operate independently of each other according to certain rules and procedures for various services and should not affect them at all.

Accordingly, it is an object of the present invention to provide a standardized initialization method for simultaneously processing a plurality of intelligent network services processed by a question-and-answer function application, which is the No. 7 signaling protocol of the TDX-10 SSP, simultaneously.

In order to achieve the above object, the present invention provides a protocol processing unit comprising a component processing block, a dialogue processing block and a transaction processing block, a signal processing control unit and a message transfer unit, a basic call processing matching block, and incoming charges. It includes a service processing unit having an application service element consisting of a block for performing a credit call operation and an incoming charge / credit call dialog performing block, and includes most subscribers and trunk line matching, various signaling devices, and time switches. A subscriber enlightenment subsystem that performs self maintenance functions; A central control subsystem performing overall operation management functions of the system; No. 7 (No. 7) applied to an all-electronic service exchange system consisting of a network sub-system located at the center of the system and performing a function of connecting the subscriber-switching systems with each other or between the subscriber-switching subsystem and the central control subsystem. 7) In the restarting method of the signaling method application part of the signaling method, first, the originating part of the restart request message is transmitted to the answering function application part, and the restart message transmitted to the incoming billing / credit call execution block is transmitted. Forming and transmitting the restart message to all the application service elements of the relevant user unit, and at the same time operating the restart management timer and waiting for the reception of the initialization message from the corresponding application service elements, and after performing the first step If there is no response until the restart management timer expires, Repeat the process of sending the restart message delivered to the charge / credit call operation execution block, and upon receiving the initialization message delivered to the dialog processing block from the application service element, the original part of the received initialization message element. The second step of checking whether the value of is equal to the question and answer function application unit, and if the result of the second step is the same, stop the restart management timer, create an initialization message with the signal connection control unit, and send the signal to the signal connection control unit. A third step of waiting for a response from the connection control unit, and after performing the third step, before the response is received from the signal connection control unit, the initialization is transferred from the incoming billing / credit call application service element to the dialog processing block. When the message is received, it sends an initialization request message back to the signal connection controller and sends a response. Repeating the waiting process and receiving the initialization response message from the signal connection control unit, initializes the data for all related services and loads the process number of the dialogue processing block and component processing block that is in charge of the Q & A function. The fourth step of creating an initialization message transmitted to the operation execution block and sending it to the incoming billing / credit call application service element and ending the second step, and after performing the second step, the value of the originalizing part of the initialization message element is applied to the Q & A function. If it is not the same, it is determined by the initialization process for restarting the application process or the application service element, and immediately generates an initialization message that is delivered to the receiving charge / credit call operation execution block, which is sent to the receiving charge / credit call application service element and terminated. The fifth step is carried out.

Below. With reference to the accompanying drawings will be described an embodiment of the present invention;

FIG. 1 is a structural diagram of an electronic service exchanger configured by adding an intelligent network service control subsystem (ISCS) to provide an intelligent network service exchange function. In the figure, 1 denotes an Access Swiohing Subsystem (hereinafter referred to as ASS), 2 denotes an Inter Connection Subsystem (hereinafter referred to as INS), and 3 denotes a Central Control Subsystem (hereinafter referred to as CCS). 4) basic call processing unit, 5 is intelligent service control subsystem (ISCS), 6 is billing, measurement / statistics, test / fault detection unit, 7 is protocol processing unit, 8 is service processing unit, 24 is disk drive, 25 is Magnetic tape drives 26 represent workstations respectively.

The ASS (1) is equipped with subscriber and relay line matching, various signaling devices, time switches, etc. to perform most call processing functions and self-maintenance functions, and has a horizontally distributed structure in a system.

Up to 60 of these ASS (1) can be implemented throughout the system.

INS (2) is located at the center of the system to connect the ASS (1) to each other or between the ASS (1) and the CSS (3) and the space (space) switch is located here. It also performs number translation, routing, and space switch connection functions among call processing functions. It is also responsible for generating and supplying a system clock with a moving device.

CSS (3) is a subsystem that performs the overall operation management function of the system. It includes the disk storage 24 and the magnetic tape drive 25 as auxiliary storage devices as well as system level maintenance, testing and measurement, billing and statistics. Control and operator matching functions. The billing, measurement / statistics, test / device detection unit 6 detects billing processing, statistical information processing, system failures and the like and manages the system operation information so that an operator can access the information through the workstation 26. .

The intelligent network service control unit 5 and the basic call processing unit 4 are software systems. The intelligent network service control unit 5 manages the communication between the service processing unit 8 that manages the service and the service control system connected to the common line signal network. It consists of a protocol processing unit (7), the service processing unit (8) is composed of an application process that is responsible for intelligent network service call processing and application service elements that support the function for a particular service.

The basic call processor 4 functions as a circuit matching control block, a time switch control block, a signal device, a control block, a traffic control block, a signal connection control block, a call mixing control block, a message transfer control block, a recording guide control block, and the like. It is composed of blocks.

2 is a structural diagram of an intelligent network service control subsystem (ISCS), where 9 is a question-processing function application part, 10 is CHA, 11 is DHA, 12 is THA, 13 is SCCP, 14 is MTP, 15 BCPI, 16 FPSM, 17 FPSC, 18 FPOE, 19 FPDO, 20 CCSM, 21 CCSC, 22 CCOE, 23 CCDO, and 27 ASE.

As shown in the figure, the intelligent network service control unit 5 is a basic call processing access block 15 (BCPI: Basic Call Processing Interface) in charge of intelligent network service call processing, and an incoming billing service control block 17 (FPSC) which is an application process function. : Free Phong Service Control), incoming call service management block 16 (FPSM: Free Phone Service Management), credit call service control block 21 (CCSC: Credit Call Service Control), credit call service management block 20 ( CCSM: Credit Call Service Management (CCSM), Incoming and Gold Action Execution Block (18) (FPOE: Free Phone Operation Execution), Call Charge Dialog Block (19) (FPDO: Free Phone Dialogue Operation) , Credit call operation execution block 22 (CCOE: Credit Call Dialogue Operation) (CCDO: Credit Call Dialogue Operation), and the dialogue processing block responsible for the function of the Q & A function application unit (11). ) (D HA: Dialogue Handling), Component Handling Block 10 (CHA: Component Handling), Transaction Processing Block 12 (THA: Transaction Handling), Signaling Connection Control Part 13 (SCCP: Signaling Connection Control Part), Message Transfer Part (14) A (MTP: Message Transfer Part) is provided.

The basic call processing access block (BCPI) 15 is a block dedicated to the interconnection function between the intelligent network block and the block required for the basic exchange function for intelligent network service processing. Communicating requests for additional information, connecting to announcements, and requesting for billing

When the incoming billing service control block (FPSC) 17 is notified of the incoming billing service request from the basic call processing access block 15, the incoming billing service control block (FPSM) 16 checks whether the service can be provided and then performs the incoming billing operation. Block FPOE (18) requires eligibility test and number translation of service requests. When receiving a response from the incoming and outgoing operation block 18, the service is analyzed and the service call request is made to the basic call processing access block 15, and the incoming call service is provided when the call is connected. The management block 16 is notified. If the service cannot be provided, the basic call processing access block 15 is requested to send the announcement or tone to the service user. In addition, when receiving a service restriction request from the incoming billing operation execution block 18, when a service is not provided, or when a call connection fails, the incoming billing service management block 16 is notified to perform management thereof.

The incoming billing service management block 16 interacts with the incoming billing service control block 17 and the basic call processing access block 15 while collecting and managing various data related to the incoming billing service to perform various functions according to the provision of the incoming billing service. The block to execute. Investigate the availability of the incoming billing service at the request of the incoming billing service control block 17, block the service call according to the call restriction request, manage the guidance information for the user, and perform various operations and maintenance data related to the service provision. Perform management and reporting functions.

The incoming billing operation execution block 18 is a block that performs an operation processing procedure for the incoming billing service. Refer to the incoming billing service control block 17 interface function, operation association function, indication number and dialog number management, operation / error definition. This function performs encoding and decoding functions of component parameter terms, operation class and timer value display functions. Then, the receiving charge dialog execution block 19 performs a function of generating a dialog processing request for component transmission, an indication of service quality, and an interface function with the component processing block 10.

The incoming charging dialog execution block 19 is a block for performing a dialog operation procedure related to transmission and reception of a component by interaction with the incoming charging operation execution block 18. It performs a dialog operation function according to the instruction of the incoming billing operation execution block 18, a function of notifying that the component is received together with the dialog type, and matching with the dialog processing block.

The credit call service control block 21, the credit call service management block 20, the credit call operation execution block 22, and the credit call dialog execution block 23, which are credit call service execution blocks, are called charge charge service execution blocks. The service control block 17, the incoming billing service management block 16, the incoming billing operation execution block 18, the incoming billing dialog execution block 19 and the credit call service basically perform the same functions.

The QCAP 9 is divided into a component sublayer and a transaction sublayer. The component sublayer provides a function for delivering components between specific application service elements, and the transaction sublayer provides a dialog for delivering a transaction message. Provide the function.

When the dialog processing block (DHA) 11 receives the dialog primitive from the dialog execution block of the application service element, it receives a component corresponding to the received dialog from the component processing block (CHA) 10 and forms a transaction primitive with user data. Transfer to transaction processing block (THA) 12. In addition, upon receiving the transaction primitive from the transaction processing block 12, a dialog primitive is formed and transmitted to the dialog performing blocks 19 and 23 of the application service element, and the component is delivered to the component processing block 10.

When the component processing block 10 receives the component primitive from the operation execution block of the application service element, the component is encoded and stored for each dialog, and the corresponding component is delivered to the dialog processing block 11 at the request of the dialog processing block. The component is discarded by the dialog termination message of the dialog processing block. In addition, when receiving a component from the dialog processing block 11, it checks the component error and forms a component primitive according to the result and the type of the component and transmits it to the operation performing blocks 18 and 22 of the application service element.

When the transaction processing block 12 receives the transaction primitive from the dialog processing block 11, the transaction processing block 12 forms a question processing message and transmits it to the signal connection controller. When the transaction processing block 12 receives the message processing message from the signal connection controller, an error of the message is checked. Transaction primitives are formed and transmitted to the dialog processing block 11 according to the type and the type.

Signal connection control unit (SCCP) 13 is a protocol of the No.7 common line signaling method for transmitting information by using the service of the message transfer unit 14 and the message transfer unit 14 is responsible for the message transfer function in the signal network It is a lower layer protocol of No.7 common line signaling method.

Here, a primitive is a functional message for processing an interface between two adjacent layers, and a component represents a protocol data unit exchanged. The dialog primitive is a message for processing an interface between the application service element (ASE) 27 and the dialog processing block (DHA) 11, and the component primitive is for processing an interface between the application service element 27 and the component processing block 10. The transaction primitive is a message that processes the interface between the dialog processing block 11 and the transaction processing block 12.

3 is an initialization message and a restart message used for restarting the question-and-answer function application unit (TCAP).

SSP_FP_AsePidRQ_SE is an initialization message transmitted from the incoming billing service control block 17 of the incoming billing application process 16, 17 to the incoming billing operation execution block 18 of the incoming billing application service element 18, 19. Initialization request message for processing. The message element indicates the function that requested the initialization for the first time and includes an Origination Part.

SSP_FP_AsePidRP_ES is an initialization message transmitted from the incoming billing operation execution block 18 of the incoming billing application service element 18 and 19 to the incoming billing service control block 17 of the incoming billing application process, in response to the initialization request message, SSP_FP_AsePidRQ_SE. Message As a message element, there is a FPOE process ID that has the process number of the incoming billing action performing block of the incoming billing application service element that is responsible for processing the incoming billing service.

SSP_CC_AsePidRP_ES is an initialization request message sent from the credit call operation execution block 22 of the credit call application service elements 22 and 23 to the credit call service control block 21 of the credit call application processes 20 and 21. In response to SSP_CC_AsePidRQ_SE, the message element includes a CCOD process ID having a process number of the credit call operation execution block 22 of the credit call application service elements 22 and 23 that are in charge of processing the credit call service.

SSP_FP_PIDr_ED is an initialization message transmitted from the incoming billing operation execution block 18 of the incoming billing application service element to the dialog processing block of the answer processing function application unit 9, and the application service element and the answer processing function application part for processing the corresponding service. Initialization request message with (9). The message element includes an FPOE process ID, an FPDO process ID, indicating the process number of the incoming billing operation execution block 18 and the incoming billing dialog execution block 19 that perform the processing of the corresponding service, and an original indicating the function that first initiated the initialization. There is an Originating Poart.

SSP_CC_PIDr_ED is an initialization message transmitted from the credit call operation performing blocks 22 of the credit call application service elements 22 and 23 to the dialog processing block 11 of the question-and-answer function application unit 9 and applied for processing the corresponding service. Initialization request message between the service element and the question-and-answer function application unit 9. The message element includes an original name indicating the CCOE process ID, the CCDO process ID, and the function that first initiated the initialization, indicating the processor number of the credit call operation execution block 22 and the credit call dialog execution block 23 performing processing of the corresponding service. There is an Originating Part.

SSP_FP_PIDi_DE is an initialization message transmitted from the dialog processing block 11 of the question-and-answer function application unit 9 to the incoming billing operation execution block 19 of the incoming billing application service element 18 and 19, and a response message for the SSP_FP_PIDr_ED message. The DHA process ID and the CHA process ID, which are the process number of the dialog processing block 11 and the component processing block 10 which are in charge of the Q & A processing for processing the corresponding service, are message elements.

SSP_CC_PIDi_DE is an initialization message delivered from the dialogue processing block 11 of the question-and-answer function application unit 9 to the credit call operation execution block 22 of the credit call application service element, and is a response message for the SSP_CC_PIDi_ED message, and processing of the corresponding service. The dialog processing block 11 and the component processing block 10, which are in charge of the question and answer processing function, have a DHA process ID and a CHA process ID, which are process elements.

SSP_EP_ALIrp_ES is a restart message transmitted from the incoming billing operation execution block 18 of the incoming billing application service element (18, 19) to the incoming billing service control block (17) of the incoming billing application process (16, 17). The application service element starts its operation and first sends this message to the receiving billing application process located above and requests initialization to process the service. The message element is an Originating Part that represents a function that is rebooted and requires initialization.

SSP_CC_ALIrp_ES is a restart message that is sent to the credit call service control block 17 of the credit call application service element, and the credit call application service element starts its operation and sends this message to the credit call application process that is located first. This message requires initialization to process. The message element is an Originating Part that displays the functionality that is restarted and requires initialization.

SSP_FP_ALIi_DE is a restart message transmitted from the dialog processing block 11 of the answer processing function application unit 9 to the incoming charging operation execution block 18 of the incoming billing application service element. It is a message that requests the initialization to handle the service by first sending this message to the incoming billing application service element located in the first position. The message element is an originating part that indicates the function that is restarted and requires initialization.

SSP_CC_ALIi_DE is a restart message transmitted from the dialogue processing block 11 of the question processing function application unit 9 to the credit call operation execution block 22 of the credit call application service element. Starting from the beginning, this message is sent to the credit calling application service element located above and requests initialization to process the service. The message element is an originating part that indicates the function that is restarted and requires initialization.

4 is a restart management table used for restarting between an application process element and an application process, which is a question and answer function application unit and a user unit.

FPASEaliveTBL is a restart management table located in the incoming billing application process. It is a table that manages the status of the incoming billing application service element, which is a lower function. The initial value when the incoming billing application process (16, 17) starts operation is clear and is set if the incoming billing application service element can start the operation and process the corresponding service. That is, it is set when the initialization process is completed by receiving the SSP_EP_AsePidRP_ES message during the initialization process with the incoming billing application service element in the clear state, and initializes all data related to the service. After that, this table is used for restart management of sub-functions. If any of the sub-functions starts to operate and receives the SSP_FP_ALIrp_ES restart request message from the incoming billing application element, the table is referred to. Discard this message because it means process, and if set, it means request for progress of the initialization process by restart. Assign it to the original part, which is the message element of SSP_FP_ALIrp_ES message, and form the SSP_FP_AsePidRQ_SE message and send it to the incoming billing application service element. .

CCASEaliveTBL is a restart management table located in the credit call application process. It manages the status of the credit call application service element, which is a lower function. The initial value when the credit calling application process starts operation is clear, and is set if the credit calling application service element can start operating and process the corresponding service. That is, it is set when the initialization process is completed by receiving the SSP_CC_AsePidRP_ES message during the initialization process with the credit call application service element in the clear state of the initial value, and initializes all data related to the service. After that, this table is used for restart management of sub-functions. If any of the sub-functions starts to operate and receives the SSP_CC_ALIrp_ES restart request message from the Credit Application Service Element, the table is referred to and the table value is cleared. This message is discarded, and if it is set, it means the initialization progress by restart, so the value of the original part, which is the message element of the SSP_CC_ALIrp_ES message, is assigned to the original part of the SSP_CC_AsePidRQ_SE message to form the SSP_CC_AsePidRQ_SE message. Send to the call application service element.

TCAPaliveTBL is a restart management table located in all application service elements that are the user part of the question-and-answer function application unit 9 and manages the state of the question-and-answer function application unit 9, which is a lower function. The initial value when the corresponding application service element starts to operate is clear and is set if the question-and-answer function application unit 9 starts to operate to process the corresponding service. That is, it is set when the initialization process is completed by receiving the SSP_FP (CC, ...) _ PIDi_DE message during the initialization process with the credit call question processing function application unit at the initial state that is in the clear state. Initialize After that, this table is used for restart management of the question and answer function application unit 9. When the question and answer function application unit 9 starts operation and receives a restart request message SSP_FP (CC, ...) _ ALIi_DE, the table is referred to. If the table value is clear, this means the whole initialization process and discards this message. If set, it means the request of the initialization process by restart. Therefore, the original part of the original part, which is the message element of the SSP_FP (CC, ...) _ ALIi_DE message, is discarded. The value is assigned to the original part of the SSP_FP (CC, ...) _ ALIrp_ES message to form the SSP_FP_ALIrp_ES message and transmitted to the application process.

5 is a flowchart illustrating a process of restarting the question-and-answer function application unit 9.

First, when the question processing function application unit 9 starts operation (31), first, the originating part of the restart request message is transmitted to the question processing function application unit 9 to form SSP_FP / CC_ALIi_DE ( 32. This message is transmitted 33 to all application service elements 27 that are relevant user parts. If the application service element receives this message during the initialization process, it is discarded. In case of restart, the initialization process for restart is performed.

At the same time, it restarts the restart management timer (34) and waits for the reception of the initialization message SSP_FP / CC_PIDr_ED from the corresponding application service elements. (35) If there is no response until the restart management timer expires, it returns to the application service element again. The SSP_FP / CC_ALIi_DE message is transmitted (36). If there is no response from the corresponding application service element, the above processes (33 to 35) are repeated.

When receiving the SSP_FP / CC_PIDr_ED message from the corresponding application service element (37), the value of the original part of this message element is checked (38). If the value is the Q & A function 9, the restart management timer is started. It stops and generates an initialization message with the signal connection control unit (39) and transmits it to the signal connection control unit (13).

After the message is transmitted, it waits for a response from the signal connection control unit 13 (41). If there is no response from the signal connection control unit 13, the SSP_FP / CC_PIDr_ED is received from the incoming billing / credit call application service element again. When the message is received (42), the signal transmission controller 13 transmits the initialization request message and waits for a response (40, 41). When receiving an initialization response message from the signal connection control unit 13 (43), the process number of the dialog processing block 11 and the component processing block 10 which initializes data for all related services and is in charge of the question and answer processing function is DHA. The process ID and the CHA process ID are loaded and an SSP_FP / CC_PIDi_DE message is created (44) and sent to the incoming billing / credit call application service element (45).

On the other hand, upon receiving the initialization request message SSP_FP / CC_PIDr_ED for restarting from the application service element during the processing of the corresponding service during the initialization process (37), the value of this message element originalization part is examined (38) and the value is applied to the Q & A function. If the denial proceeds with the initialization process with the signal connection control unit, but if the value of the original part is an application process or application service element, the initialization process for restarting them is not necessary, so the initialization process with the signal connection control unit 13 is not necessary. The SSP_FP / CC_PIDi_DE message is created by inserting the process number of the dialog processing block 11 and the component processing block 10, which are in charge of the Q & A function, into the DHA process ID and the CHA process ID (34), and then the charge / credit credit. And transmits to call application service elements 18 and 19 (35).

As a result, the restart process of the Q & A function is terminated (41) and the Q & A process for the incoming billing / credit call service call is started.

Therefore, the present invention carried out by the above processing procedures, by restarting the Q & A function according to the standard restart procedure and method, acts independently of each other and does not affect at all, and will be processed later. Restarting a new service in the same way has the effect of providing a standardized interface for providing services quickly and easily.

Claims (1)

Message processing function application unit 9 (TCAP), signal connection control unit 13 (SCCP), and message delivery composed of component processing block 10 (CHA), dialog processing block 11 (DHA), and transaction processing block 12 (THA). Protocol processing unit 7 having unit 14 (MTP), basic call processing matching (BCPI) 15, incoming billing / credit call operation performing blocks (FPOE / CCOE; 18, 22) and incoming billing / credit call It includes a service processing unit (8) having an application service element (27) consisting of a dialogue execution block (FPDO / CCDO) 19, 23, and includes most subscribers and relay line matching, various signaling devices, time switches, etc. A subscriber exchange subsystem (ASS) for performing processing and self-maintenance functions; A central control subsystem (3; CCS) that performs overall operational management functions of the system; Located in the center of the system is applied to the all-electronic service exchange consisting of a network subsystem (INS; 2) to perform the function of connecting the ASS (1) with each other, or between the ASS (1) and the CCS (3) No.7 (No.7) In the restart method of the signal processing function application part of the signaling method, first, the originating part of the restart request message is transmitted to the question processing function application part 9 to receive and charge / credit. A restart message is transmitted to the call operation execution blocks 18 and 22 to transmit the restart message to all the application service elements 27 which are related user parts, and at the same time, restart the restart management timer and operate from the corresponding application service elements. The first charge (31 to 35) waiting for the reception of the initialization message, and if there is no response until the restart management timer expires after performing the first steps (31 to 35), the incoming charge / Repeat the process of transmitting the restart message to the credit call operation performing blocks (18, 22), and the value of the original part of the initialization message element transmitted from the corresponding application service element to the dialog processing block (11) If the result of the second step (36 to 38) and the second step (36 to 38) to check whether the same as the question and answer processing function application unit, if it is the same, the restart management timer is stopped and the initialization message with the signal connection control unit (13) Make and transmit the signal to the signal connection control unit 13 and wait for a response from the signal connection control unit 13 (39 to 41), and after performing the third step (39 to 41), the signal connection control unit 13 Before the response is sent from the incoming billing / credit call application service element to the dialogue processing block, repeats the initialization request message and waits for the response, and returns to the signal connection control unit 13. When receiving the data initialization response message, it initializes the data for all related services and makes an initialization message delivered to the dialogue processing blocks 18 and 22 in charge of the question and answer function, and sends it to the incoming billing / credit call application service element and terminates. After performing the fourth step 42 to 46 and the second step 36 to 38, if the value of the original part of the initialization message element is not the same as that of the Q & A application part, the application process or application service element Determining the initialization processing for restart of the service, and immediately generates an initialization message delivered to the incoming billing / credit call operation performing blocks (18, 22) to create an initialization message delivered to the incoming billing / credit call operation performing blocks (18, 22) An application service comprising a fifth step (38, 43 to 46) for transmitting and terminating to an incoming billing / credit call application service element How to restart an element.