KR0134713B1 - Electronic switching system using isdn service - Google Patents

Abstract

The present invention relates to an SCP simulation method for an intelligent network service, and receives all signals sent from the SSP to the SCP, examines the data contents, generates and sends signals and data required by the SSP, and assumes a situation that may occur in the SSP. In order to provide the SCP simulation method to test the SSP performing the service function according to the situation by reflecting the SCP simulator for the intelligent network service, the first step of receiving the intelligent network service test request message and determining the type of the intelligent network service ( 61 to 64); The incoming billing service process includes a second step (65, 68 to 76) for generating and transmitting test data according to the type of required test data; The credit calling service process may include a third step 66, 77 to 82 for generating and transmitting test data according to the type of required test data; And the information charge storage service process includes an intelligent network service processing without interworking with an SCCP or less protocol processing unit and SCP, including a fourth step (67, 83 to 97) of generating and transmitting test data according to the type of required test data. It is economical because it can test the function, and it can improve the reliability by knowing through the screen whether the processing contents of SCP and simulator are correct.

Description

Intelligent network service control system (SCP) simulation method of intelligent network service switch (SSP).

1 is a structural diagram of a service switch (SSP) to which the present invention is applied;

2 is a service for testing an intelligent network service according to the present invention

Flowchart of the control system (SCP) simulator.

* Explanation of symbols for the main parts of the drawings

10: central control subsystem 20: interconnect network subsystem

30: exchange subsystem 41: question and answer processing function application unit process

42: Service Control System Simulator

The present invention relates to an intelligent network service SCP (Service Control Point) simulation method for testing an incoming billing, credit call and information storage service provided as an intelligent network service in SSP (Service Switching Point).

In general telephone service provided by the conventional general exchange, the fixed telephone number is directly involved in the actual call routing, so that the caller-oriented call processing and billing are handled in principle. In addition, since only the exchange-centered service is provided, there is a lack of functions of various services, so that it is difficult to provide a service that satisfies the service provider and the service user, and various users have different expectations and desires for communication.

For this reason, it is necessary to develop incoming charges, credit calls and information storage GOD services using intelligent networks. The billing service provides a subscriber with a special number, rather than a telephone number of the general called party, that is, a service identification number and a billing number, so that the call charge for the incoming call to this number can be used instead of the caller (service user). Is a service that you charge.

The credit call service is a service that allows call charges to be charged to the number of a credit call accounting account, which allows a service user to make a call without using cash.

The information charge storage service charges the service fee to the information provider after deducting a certain percentage of each service by adding and using the telephone service charges for the information service using the telephone line on the behalf of the information providers. It is a return service.

The SSP system analyzes the call originating from the subscriber of the conventional telephone network and if it is determined to be the intelligent network service call, the SSP system and the SCP system to provide the intelligent network service. 7 (Signalling System No.7) By interworking with the network, it requests the call control information necessary for processing the intelligent network service and provides the desired intelligent network service by using the information sent from SCP.

At this time, it is difficult to find the cause of the barrier when the problems caused by the failure of the communication line, the failure of the SCP system, and the failure of the SSP system are combined. Therefore, in order to perform the intelligent network service processing function test in the SSP system itself without interworking the SSP system and the SCP system, a protocol method under the Signaling Control Part (SCCP) and a simulation method that performs the function of the SCP are needed. .

Therefore, the present invention receives all signals sent from the SSP to the SCP so that the intelligent network service call can continue while performing the conventional call processing, examines the data contents, and generates the signals and data required by the SSP. It is possible to test whether the SSP is performing the service function according to the situation by reflecting it in the SCP simulator for the intelligent network service, assuming the situation that may occur in the SSP, and whether the SSP is properly processing the service function. It is aimed to provide SCP simulation method that can test without interworking with, and can test service function regardless of protocol function under application service element and SCP development status.

In order to achieve the above object, the present invention is applied to a service control system (SCP) simulator connected to a question-and-answer function application unit (TCAP) process of a service switch (SSP), the main process of the service control system simulator Initializing according to the message processing function application unit (TCAP) and after receiving the intelligent network service test request message to determine the type of intelligent network service After performing the first step, the incoming billing service processing request message The service process generates test data according to the type of test data required and transmits the test data to the question processing function application unit process. After performing the first step, if the credit call service processing request message is received, the credit call service process requests the test data. Create the test data according to the type of question and answer After performing the third step and the first step of transmitting the function application unit process, the information charge storage agent service processing request message, and the information charge storage agent service process generates the test data according to the type of the required test data to process the question and answer function. And a fourth step of transmitting to the application unit process.

Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention;

1 is a new subsystem for performing an intelligent network service exchange function, an application service element and a question-and-answer function application subsystem (ATHS) 31 and an intelligent network service subsystem (ISS) 35. The overall structure diagram of the configured SSP.

The electronic switchboard basically has three subsystems: a central control subsystem (CCS) 10, a network subsystem (INS) 20, and a switching subsystem (ASS) 30. CCS (10) is a subsystem that performs the overall operation and maintenance of the system and provides functions such as system-level maintenance management, fault control management, diagnosis and fault handling functions, billing, measurement and statistics, and operator matching. Controls disk and magnetic tape devices, which are auxiliary storage devices.

INS 20 is located in the middle of the system and performs the function of connecting between the ASS (30) mutually or between the ASS (30) and the CCS (10), ASS (30) using a space switch (S-switch) It configures a mutual call path or a path for supplying call announcement information or call mixing to subscribers.

ASS is equipped with subscriber and trunk line interface, time switch (T-switch), and various signaling devices to perform most call processing functions, self-operation and maintenance functions, etc. It has a horizontally distributed structure, and the transmission medium with the INS 20 is an optical link, which is called a data link. In addition, the electronic information exchange system is equipped with a digital subscriber interface, a No.7 signaling device, a packet handler function, a network function, and the like. Make it possible. The original ASS 30 exists as one, but at the application stage ASS-S (subscriber), ASS-T (trunk), ASS-S / T (subscriber / trunk), ASS-7 (SS No. 7), ASS Required combinations such as -P (packets) may appear.

The newly added ATHS 31 is a subsystem that performs common line signaling (SS No. 7) protocol function for communicating with a Service Control Point (SCP) to process an intelligent network service, and an ISS (35) ) Performs the function of processing a specific intelligent network service, charging processing related to service call, traffic control management and service switchboard maintenance and operation management function. The Signal Message Execution Subsystem (SMHS) 32 performs a Message Transfer Unit (MTP) function and a Signal Control Unit (SCCP) function for transferring signal units in the common line signaling method (SS No. 7), and the line and trunk The access subsystem (LTAS) 33 mainly performs monitoring, control, and test functions of subscriber and trunk line interfaces, and the control system is redundant by load balancing. The Signaling Service Subsystem (SSS) 36 generates and transmits DTMFR (Dual Tone Multi-Frequency Receiver), R2 Multi-Frequency Compelled (MFC), and Continuity Check Tone (CCT) various theory signals to the time switch. Function, and the traffic control subsystem (TCS) 34 has the capability to control and oversee all performance of the entire process of the call, i.e., call establishment and call tearing, and the telephone data network subsystem (TDIS) 37 ) Performs the interworking function with the data call of the telephone exchange network.

The central switching subsystem (CSS) 23 is a space switch in the time-space-time (TST) switch structure, and the space switch connection control, network synchronization function and data link function with the ASS (30) or CCS (10) This is included. The network control subsystem (INCS) 21 performs the search, connection, and disconnection control functions of the call of the time-space-time (T-S-T) switch, and also performs maintenance functions such as call tracking and passage establishment. The number translation control subsystem (NTCS) 22 receives the number translation request from the ASS 30 and informs the processor of the number translation result, and performs a route control function for the network management function. In addition, various errors collected in the exchange maintenance subsystem (ASMS) 38, the network maintenance subsystem (INMS) 24, the central control maintenance subsystem (CCMS) 13, and the like are operated by the CCS 10. And to maintenance control subsystem (OMCS) 12. This determines the class of error, generates an alarm, and sends an output message through the operator-machine communication subsystem (MMCS) 11.

In order to process the intelligent network service, ISCS (Intelligent Network Service Control) is newly added to the ASS, and the ISCS is composed of a service processor that manages the intelligent network service and a protocol processor that manages communication with SCP.

The service processor includes an application process that handles intelligent network service call processing and an application service element that supports a function of a specific intelligent network service. The service processing unit handles Basic Call Processing Interface (BCPI), Free Phone Service Control (FPSC), Free Phone Service Management (FPSM), and FPOE Free Phone Operation Execution (FPDO), Free Phone Dialogue Operation (FPDO), Credit Call Service Control (CCSC), Credit Call Service Management (CCSM), Credit Call Operation Execution (CCOE), Credit Call Dialogue Operation (CCDO), Premium Rate (PRSC) It consists of blocks such as Service Control (PRSM), Premium Rate Service Management (PRSM), Premium Rate Operation Execution (PROE), and Premium Rate Dialogue Operation (PRDO).

The protocol processing unit is composed of a Transaction Capability Application Part, a Signaling Connection Control Part (SCCP), a Message Transfer Part (MTP), and the like. These blocks are Component Handling (CHA), Dialogue Handling (DHA), and Transaction Handling (THA) blocks.

In SSP, the intelligent network service is performed by the interaction of the above-mentioned blocks, and receives the intelligent network service call from the basic call processing block. Recognizing that the received call is an intelligent network service, it sends an inquiry to SCP and proceeds the call accordingly. The function to process each block to proceed with the call is as follows.

The BCPI block is a block that performs the interconnection function between the basic call processing unit and the intelligent network service call processing unit. When the intelligent network service call is received from the basic call processing unit, the BCPI block analyzes which intelligent network service call is received. The information is transmitted to the PRSC block of the credit call service call by the credit call service processing unit in the case of the credit call service call or by the CCSC block in the case of the information charge storing agency service call in the PRSC block of the information charge storing agency service processing part in the case of the information charge storing service call.

The FPSC, CCSC and PRSC blocks are application processes that perform intelligent network services. Upon receipt of the intelligent network service call processing request from the BCPI block, the FPSC, CCSC and PRSC blocks collect additional information such as password, credit number, called number, etc. Send the query and proceed with the service call according to the result.

And, upon receiving the call blocking request from SCP, the function to block the call according to the call blocking information, local identification number assignment and half-turning function to identify the specific intelligent network service call, announcement broadcasting request function, call blocking information request from the operator. It performs the function of transmitting relevant information upon reception, performing call blocking when receiving a call blocking request from SCP and notifying the operator, and calling statistical primitives when an event occurs for collecting statistics according to the corresponding event. .

FPSM, CCSM and PRSM blocks collect and manage various data related to intelligent network services, and interact with FPSC, CCSC, PRSC, billing, measurement / statistics and test / fault detection function blocks to perform various functions according to intelligent network service provision. .

The FPOE, CCOE, and PROE blocks are blocks that perform the operation processing procedure. The FPOE block is a FPSC block, the CCOE block is a CCSC block, the PROE block is a PRSC block and access function, operation association, indication and dialog number management, operation / Performs basic encoding and thawing of component parameters, display of class of operation and timer value with reference to error definition.

It requests the FPDO, CCDO, and PRDO blocks, which are the operation dialogs of each intelligent network service, to process the dialog for component transmission, and performs the connection function with the CHA block, which is the component processing unit.

The FPDO block interacts with the FPOE block, the CCDO block with the CCOE block, and the PRDO block with the PROE block to perform the dialog operation procedures related to component transmission and reception. It performs the function of notifying the PROE block of receiving the component and matching with the DHA block. The DHA block receives the dialog processing primitives from the FPDO, CCDO and PRDO blocks, receives the component corresponding to the received dialog from the CHA block, reconstructs it, creates user data, forms a transaction processing primitive, and then converts it into a THA block. To pass. In addition, when the primitive is received from the THA block, it is notified to the corresponding block among the FPDO, CCDO, and PRDO blocks, and delivers the corresponding component to the CHA block.

When a CHA block receives component processing primitives from FPOE, CCOE and PROE blocks, it combines the corresponding components and delivers them to the DHA block.After receiving the component from the DHA block after transitioning to the processing status for each operation, the syntax error This function checks and delivers the result to the corresponding block among FPOE, CCOE and PROE blocks.

When the THA block receives the transaction processing primitive from the DHA block, the THA block reconstructs the received user data, creates a TCAP message, and sends the message to the signaling connection controller. When the THA block receives the primitive from the signaling connection controller, the QA Extracts the processing function application unit (TCAP) message, checks the syntax error and transaction status, and delivers the corresponding primitive to the DHA.

2 is a schematic diagram of the SCP simulator for SSP's intelligent network service, and shows an operation relationship with a TCAP process.

In the main proset 43 of the SCP simulator 42, receiving (44) the question and answer function application (TCAP) message from the question and answer function application (TCAP) process (1), the main process of the SCP simulator (42) ( 43 configures a routing data request acknowledgment message and a subsystem service start request acknowledgment message, and performs an initialization procedure 45 for transmission to the question-and-answer function application unit (TCAP) process. When the TCAP process receives the intelligent network service test message from the upper protocol, the received data is reconstructed and sent to the SCP simulator (44). The main process 43 of the SCP simulator 42 receives the received message ( 44), if the billing service test data request is received, and the billing service test request message is sent to the billing service process 53 (49), the test data request message for each test item is transferred to the test item process 56 ( 50). The test item-specific process 56 configures data necessary for the incoming billing service test for each test item, transfers the data to the TCAP process 41, and ends 46.

The main process 43 of the SCP simulator 42 analyzes the received message 44 and sends a credit service test request message to the credit service process 54 if it is a credit service test data request (49). A separate test data request message is forwarded 51 to a test item specific process 57. The test item-specific process 57 configures the data necessary for the credit call service test for each test item, transfers it to the question-and-answer function application unit (TCAP) process 41, and ends.

The main process 43 of the SCP simulator 42 analyzes the received message 44 and transmits the information charge storage service test request message to the information charge storage service process 55 in the case of the information charge storage service test data request. When sent (49), the test item test data request message is forwarded to the test item process 58 (52). The test item-specific process 58 configures the data necessary for the information fee storage agency service test for each test item, transfers it to the question-and-answer function application unit (TCAP) process 41, and ends.

3 is a flowchart of the SCP simulator.

When the basic call processing unit recognizes the intelligent network service call and requests the intelligent network service from the basic call connection unit, the basic call processing unit requests data necessary for processing from the basic call connection unit to the intelligent network service from the intelligent network service control processor block. When the TCAP process block sends a signal 61 to the main process of the SCP simulator to request routing data transmission notification regarding the management of the internal traffic flows across the common signaling system, the SCP simulator requests routing data transmission. The acknowledgment signal is transmitted 62 to a TCAP process. When the SCP simulator receives the local subsystem service start request message (63), it recognizes that the service is started and transmits any destination information that can be received in the local subsystem service start request confirmation message to the QCAP application (TCAP) process. 64).

As a result of the test type determination in the SCP simulator, when the incoming billing service call processing function test data request message is received (68) during the billing service processing test (68), the incoming billing service call processing function test data is generated (69) for each item. The test data required for the incoming billing service call processing is transmitted to the TCAP process 70, and then terminated.

Test type determination result in the SCP simulator When the incoming billing service billing function test data request message is received (71) during the billing service processing test (65), the incoming billing service billing function test data is generated (72) and the billing for each item is received. The test data required for service charging is transmitted to the TCAP process 73, and then terminated.

Test type judgment result in the SCP simulator When receiving the charge service operation management function test data request message (74) during the charge service processing test (65), the call charge service operation management function test data is generated (75) for each item. The test data necessary for the management of the incoming billing service operation is transmitted (76) to the TCAP process, and then terminated.

As a result of the test type determination in the SCP simulator, when the credit call service call processing and billing function test data request message is received (77) during the credit service processing test (77), the credit call service call processing and billing function test data is generated (78). The test data necessary for processing and charging the credit call service for each item is transmitted to the TCAP process (79), and then terminated.

As a result of the test type determination in the SCP simulator, when the credit call service announcement broadcast function test data request message is received (80) during the credit call service processing test (66), the credit call service announcement broadcast function test data is generated (81). The test data required for the itemized credit call service announcement broadcasting process is transmitted (82) to the TCAP process and ends.

Test type judgment result in the SCP simulator receives the information charge storage agent service call processing function test data request message (83) during the information charge storage agent service processing test (83), and generates the information charge storage service call processing function test data ( 84). The test data necessary for processing the information charge storage service call for each item is transmitted to the TCAP process (85), and then terminated.

Test type judgment result in the SCP simulator (86) Upon receipt of the information charge storage service billing function test data request message (86) during the information charge storage agent service processing test (87), the information charge storage service charge function test data is generated (87). Then, the test data necessary for charging the information fee storage service for each item is transmitted to the question and answer function application unit (TCAP) process 88, and then ends.

Test type judgment result in the SCP simulator Upon receiving the information charge storage service service broadcast service test data request message (89) during the information charge storage agency service processing test (67), the information charge storage service service broadcast processing function test data is received. Generate (90) and transmit (91) the test data necessary for the information-based hydraulic proxy service announcement broadcast processing for each item to the question-and-answer function application unit (TCAP) process.

Test type judgment result in the SCP simulator Upon receiving the information charge storage service SSP failure handling function test data request message (92) during the information storage storing agent service processing test (67), the information storage storing service SSP failure processing function test data is received. After generating 93, the test data necessary for processing the information charge storing agency service for each item is transmitted to the TCAP process 94, and then terminated.

Test type judgment result in SCP simulator Receiving information charge storage service automatic call blocking information processing function test data request message (95) during information charge storing agent service processing test (95) Information charge storing service automatic call blocking information processing The function test data is generated (96), and the test data necessary for the information charge storing agent automatic call blocking information processing for each item is transmitted to the TCAP process 97, and then terminated.

As described above, the present invention provides a protocol processing unit of less than SCCP in the SCP simulator and an environment such as SCP for testing of an intelligent network service (incoming billing service, credit call service, information charge storage service) in SSP. Intelligent network service processing function can be tested without interworking with processing unit and SCP, and it is economical, and it is effective to improve reliability by knowing through SCP screen whether the processing contents of SCP simulator are correct.

Claims (5)

In the method applied to the service control system (SCP) simulator 42 connected to the TSP process 41 of the service exchanger (SSP), The main process of the service control system simulator initializes according to the message of the question-and-answer function application unit and then receives the intelligent network service test request message to determine the type of the intelligent network service. First steps 61 to 64; After performing the first steps (61 to 64), if the incoming billing service processing request message, the second billing service process generates the test data according to the type of the required test data and transmits the test data to the question processing function application unit process ( 65, 68 to 76); After performing the first steps 61 to 64, if the credit call service processing request message is a third step, the credit calling service process generates test data according to the type of the required test data and transmits the test data to the Q & A application process; 66,77 to 82); And After performing the first steps 61 to 64, if the information fee storage service processing request message, the information charge storage service process generates the test data according to the type of the required test data and transmits the question and answer function application unit process. An intelligent network service control system (SCP) simulation method of an intelligent network service exchange (SSP), comprising the fourth step (67,83 to 97). The method of claim 1, wherein the first steps (61 to 64), A fifth step of the main process of the service control system simulator transmits a routing data transmission request acknowledgment signal to the TCAP process when a routing data transmission request is received from the question processing function application unit process (61). , 62): After performing the fifth step (61, 62), when the main process of the service control system simulator receives the subsystem service start request message from the question and answer function request unit process, it recognizes that the service is started, and confirms the local subsystem service start request. (Sixth steps 963 and 64), which transmits the destination information capable of being called to the message and transmits it to the TCAP process; and After performing the sixth step (63, 64), the intelligent network service control system (SCP) of the intelligent network service switch (SSP) characterized in that it comprises a seventh step of receiving the intelligent network service test message to determine the type of intelligent network service Simulation method. The method of claim 1, wherein the second steps (65, 68 to 76), If the result of the test type determination of the intelligent network service is a call forwarding service process, the call forwarding service process is a fifth step (65) of determining the type of the call forwarding service test: After performing the fifth step (65), when the incoming billing service call processing function test data request message is received, the incoming billing service call processing function test data is generated, and the test data necessary for processing the incoming billing service call is the question processing function application unit. Sixth step (68, 69, 70) to send to the (TCAP) process: After performing the fifth step (65), when the incoming billing service billing function test data request message is received, the incoming billing service billing function test data is generated, and the test data necessary for billing the incoming billing service is transmitted to the question processing function application unit process. The seventh step (71,72,73): and After performing the fifth step 65, when the incoming billing service operation management function test data request message is received, the incoming billing service operation management function test data is generated and the test data required for the incoming billing service operation management is the question and answer function application unit. An intelligent network service control system (SCP) simulation method of an intelligent network service exchange (SSP), comprising an eighth step (74, 75, 76) of transmitting to a process. The method of claim 1, wherein the third steps (66, 77 to 82), A fifth step 66 of determining, by the credit call service process, the type of credit call service test if the test type determination result of the intelligent network service is a credit call service process; After performing the fifth step 66, if the credit call service call processing and billing function test data request message is received, the credit call service call processing and billing function test data is generated to generate test data necessary for credit call service call processing and billing. A sixth step (77,78,79) of transmitting to the question-and-answer function application unit (TCAP) process; And After performing the fifth step 66, if the credit call service announcement function test data request message is received, the credit call service announcement broadcast function test data is generated to process the test data necessary for the credit call service announcement broadcast process. An intelligent network service system (SCP) simulation method of an intelligent network service exchange (SSP), comprising a seventh step (80, 81, 82) of transmitting to a functional application unit (TCAP) process. The method of claim 1, wherein the fourth steps (67, 83 to 97), If the result of the test type determination of the intelligent network service is information fee storage agency service processing, the information fee storage agency service process is a fifth step (67) of determining the type of information fee storage agency service: After performing the fifth step (67), when receiving the information charge storage agent service call processing function test data request message and receiving the information charge storage agent service call processing function test data request message, the information charge storage agent service call processing function test data Step (83,84,85) of generating test data necessary for processing the information fee storage service call by generating a message to the TCAP process; After performing the fifth step (67), upon receiving the information charge storage service billing function test data request message, the information storage fee service billing function test data is generated to process the test data necessary for charging the information charge storage service. A seventh step (86,87,88) for transmitting to a TCAP process; After performing the fifth step (67), if the information fee storage agent service announcement broadcast processing function test data request message is received, the information fee storage agent service announcement broadcasting processing function test data is generated and necessary for the information fee storage service announcement service processing. Eighth step (89, 90, 91) of sending test data to the question and answer function application unit (TCAP) process: After performing the fifth step (67), upon receiving the information charge storage service SSP failure processing function test data request message, the information charge storage agent service SSP failure processing function test data is generated and necessary for the information charge storage service SSP failure processing. A ninth step (92, 93, 94) of sending test data to the TCAP process; And After performing the fifth step (67), upon receiving the information charge storage agent automatic call blocking information processing function test data request message, the information charge storing agent service automatic call blocking information processing function test data is generated to automatically generate the information charge storing agent service. An intelligent network service control system of an intelligent network service switch (SSP), comprising a tenth step (95, 96, 97) of transmitting test data necessary for call blocking information processing to a question-and-answer function application unit (TCAP) process. SCP) Simulation method.