KR0139583B1 - A signal tracing method for no.7 isup of isdn - Google Patents

Abstract

The present invention relates to a method for implementing a common channel signaling ISUP signal tracking method in a distributed control switching system, and can show the entire No. 7 ISUP message transmitted / received in units of calls in a distributed control switching system. Completion of IAM (Initial Address Message) reception and completion of signal tracking time according to the operator's request for signal tracking registration in order to provide a method for tracing the common line integrated information network user unit (No. 7 ISUP) signal that can simultaneously track repair related messages. First steps 31 to 69 for performing reception processing, call related message reception processing, and non-call related message reception processing; A second step (70 to 77) of deleting the route number under signal tracking according to the operator's request to delete the signal tracking; And a third step (78 to 82) of formatting the signal tracking data according to the signal tracking status output request of the operator and outputting the signal tracking data to the operator, thereby increasing the availability of the relay line and improving the quality of the relay call service.

Description

Signal Tracking Method of Common Line Signaling System of Integrated Information Communication Network in Distributed Control Switching System

1 is a schematic structural diagram of a distributed control exchange system to which the present invention is applied.

2 is a detailed structural diagram of a distributed control exchange system to which the present invention is applied.

3a to 3d or an overall flow diagram in accordance with the present invention.

* Explanation of symbols for main parts of the drawings

11: central control subsystem 12: network subsystem

13,14,15,16: Exchange Subsystem

The present invention relates to a signal tracking method for tracking a common line signaling method integrated information network user unit (hereinafter referred to as No. 7 ISUP) signal in a distributed control switching system.

No.7 ISUP signal processing should be performed to process common line signaling system user part (No.7 ISUP) relay call of electronic switching equipment. No.7 For ISUP signal processing, the operator should be able to track the contents of the messages transmitted and received during the exchange period, problems occurring during interworking of all electronic exchange periods, signal processing problems during call processing, and problems during maintenance / repair. It can be solved. The present invention relates to a method for implementing such a No.7 ISUP signal tracking method in a distributed control exchange system.

In general, the R2 signaling method tracks signals by dividing them into line signals and register signals, and the conventional No.7 ISUP signal tracking method outputs messages in units of messages, so that the data generated by each relay line can be selected and viewed. There was no problem.

In order to solve the above problems, the present invention can show the entire No.7 ISUP message transmitted and received in units of calls in a distributed control exchange system, and common line comprehensive information capable of simultaneously tracking maintenance / maintenance messages generated during a call. An object of the present invention is to provide a method for tracing a network user part (No. 7 ISUP) signal.

In order to achieve the above object, the present invention provides a common line signaling method integrated information communication network user unit (No. 7 ISUP) signal tracking method applied to a distributed control exchange system, the database and shared library according to the signal tracking registration request of the operator Receive the initial address message (IAM) after the modification and start the tracking process, stop the tracking by receiving the signal tracking time completion information, track the signal by receiving the call related message, A first step of receiving a message to track a signal or outputting signal tracking data according to whether a signal tracking process is generated; a second step of deleting a route number under signal tracking according to an operator's request to delete a signal tracking; And a third step of formatting the signal tracking data according to the signal tracking status output request of the operator and outputting the signal tracking data to the operator.

In the present invention, the common line signaling method (hereinafter, referred to as No. 7) signal tracking function is a function of monitoring a signal message of all electronic exchange periods in which a No. 7 signal is transmitted and received between relay stations. The software structure has been increased so that the module can be processed in a separate trunk line signal tracking process without significantly affecting the block. In addition, the traced message contents are output as raw data without additional interpretation to prevent errors that may occur when analyzing the message data internally.

In addition, the present invention outputs a tracked message in a call unit so that the progress of the message generated during the call can be easily understood. The unit of signal tracking registration is possible up to 24 hours for a given time for each route, and the system can be prevented from being overloaded by the signal tracking function by limiting the number of traceable routes simultaneously to the maximum of two.

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

1 is a schematic structural diagram of a distributed control exchange system to which the present invention is applied.

The distributed control switching system includes an access switching subsystem (ASS) 13 to 16, an interconnection network subsystem (INS) 12, and a central control subsystem 11 (CCS). It has three subsystems.

Switching subsystem (ASS) is a subscriber switching subsystem (ASS-S (16), trunk line switching subsystem (ASS-T) (14, 15) and common line signaling switching subsystem (ASS-7) (depending on function). 13), in the AS-S 16, an access switching processor (ASP) performs a call processing function for a subscriber accommodated in an exchange, and a trunk line switching subsystem (ASS). In the T (14, 15), the connection switching processor (ASP) performs the accepted interval circuit call processing function, and in the common line signaling switching subsystem (ASS-7) 13, the message transmission of No. 7 signaling is performed. The functions of the message transfer part (MTP) are performed by an access exchange processor (ASP) and a signaling message handling processor (SMHP).

In the network subsystem (INS) 12, a number translation function, a root control function, and a space division switch control function, which are commonly required in each exchange subsystem (ASS), are provided with a number translation processor (NTP) and an internal device. Interconnection Network Processors (INPs) perform each operation, and the central control subsystem (CCS) 11 performs the operation and maintenance functions of the system.

2 is a block diagram of related blocks for implementing the No.7 ISUP signal tracking method in a distributed control exchange system to which the present invention is applied.

The Access Switching Processor (ASP) of the trunk line switching subsystem (ASS-T) 14 has a shared function in order to process relay calls of the integrated information communication network user unit (hereinafter referred to as ISUP) service. There are two software blocks having UPC (ISDN-User Part Control) 24 and UPI (ISDN-User Part Interface) 26.

In the generated ISUP call, the UPC 24 performs transmission and relaying, and controls various messages generated during the call processing and transmits them to the UPI 26. The UPI 26 performs a message conversion function and the like, and a Signaling Messange Handling Processor (SMHP) 28 of the Message Transfer Part (MTP) 27 that processes multiple messages and the ST ( Information is transmitted to the power through Signaling Terminal (29).

Telephony Device Maintenance Handling (TDMH) 25 is a block that exists in each Access Switching Processor (ASP) 30 in the system and manages the maintenance / maintenance status of the call-path equipment, and is internally on-line. Receives the test result of the call channel equipment on the) and blocks / unblocks the related equipment or isolates or restores the specific call system equipment at the request of the operator, and transmits the status of the current equipment to the operator when the equipment status is requested. Do what you do.

Unlike the conventional signaling method, the processing of such a function should be able to transmit information to the power station through a signal network, so that the interworking is performed with the UPI 26 block and the call processing is performed because the state of the line also affects ISUP call processing. Interworking with the UPC 24 block is also required.

The registration / cancellation / information output request of the No. 7 signal tracking function by the operator is processed in the Route Date Handling (RDH) 22 block of the number translation processor (NTP) 21. Since the actual tracking of the request takes place in the connection exchange processor (ASP) 30, which handles the relay call, the trunk data handling (TDH) 23 of the connection exchange processor (ASP) 30 in the RDH 22 block. Trace information is sent to the block and stored in the shared library.

The TDH 23 block of the access exchange processor (ASP) 30 stores information about a route to be tracked in a shared library, regardless of the signaling method.

No.7 UPI (26) block in charge of sending and receiving user part signal message is a unit of message transmitted and received during relay call processing, and the shared library checks whether the relay line belongs to the root number of the signal tracking target, and checks the contents of the message to the signal tracking process. To pass. The signal tracking process generated for each relay line detects the end of the call as a message type, formats the tracked content in the unit of call, and transmits it to the operator terminal.

The TDMH 25 block, which is responsible for the maintenance of the call path system in the system, is interworked with the UPI 26 block for transmitting and receiving maintenance-related messages to the power station. In-call maintenance / maintenance messages are output at the same time as call-related messages. In-call maintenance / maintenance messages are immediately output to the operator terminal.

3A to 3D are overall flow diagrams for implementing the No. 7 signal tracking method in the distributed control exchange system according to the present invention.

When the RDH block 22 receives the route number and the signal tracking time from the operator in the trace waiting state 31 as a signal tracking registration request (32), the validity of the signal tracking is checked (33). In the case of registered route number, if a relay line is not assigned to the route, if the signaling method is not ISUP, if the route number does not exist in the system, an error is output and terminated (34). After the signal tracking information is stored in the database (35), the signal tracking target route number is transmitted to the TDH 23 block of the connection exchange processor (ASP) 30 (36), and the TDH ( 23) The block is written to the shared library (37) and transitions to the signal waiting state (38).

In the signal waiting state 38, upon receiving the IAM (Initial Address Message) No. 7 from the UPC 24 (39), an initial address message (IAM) is transmitted to the power station (40) and the corresponding library is shared. If the route of the relay line is a signal tracking target (41), and if it is not a signal tracking target, it transitions to the signal waiting state (42). If the signal tracking target is identified in the shared library, the process generation state is identified, and then a flag is set to generate a signal tracking process (43) and transition to the signal waiting state (44).

When the IAM is received from the power station in the signal waiting state 38 (45), the IAM is transmitted to the UPC 24 (46) and the shared library checks whether it is the root signal tracking target of the corresponding relay line (41). Transition to standby (42). If the signal tracking target is identified, after the process creation state is identified in the common library, a flag is set to generate a signal tracking process (43), and the process transitions to the signal waiting state (44).

In the signal waiting state (38), when the signal tracking time requested by the operator after registration (47) is notified of the signal tracking stop to the TDH (23) block (48), the shared library is modified to stop the signal tracking of the corresponding route number. Later (49), the transition to the tracking standby state (50).

In the signal waiting state 38, when a call-related message other than IAM is transmitted / received (51) after transmitting / receiving a message to the UPC / power station (52), it is checked whether the route of the corresponding relay line is a signal tracking target (53). Otherwise, the signal transitions to the signal waiting state (54), and the signal tracking data is transmitted to the signal tracking process (55) if the signal tracking target. If the message type is RLC (ReLease Complete), REL (RELease), or RSC (Reset Circuit), it checks (56), or transitions to a signal waiting state (57). If the message type is RLC, REL, or RSC, signal processing is performed. Since the procedure signifies the end of the call, the trace data stored in the signal tracking process is formatted (58), outputted to the operator terminal (59), and transitioned to the signal waiting state (60).

When the non-call related message is transmitted / received in the signal waiting state (38) (61), after the message is transmitted / received to the TDMH / power station (62), it is checked whether the route of the corresponding relay line is a signal tracking target (63). Transitioning to the standby state (64), and if the signal tracking target, the library checks whether the signal tracking process for the corresponding relay line has been generated (65). If a signal tracking process has not been generated, it is uninterested, so the data is formatted (67) and output to the operator terminal (68) and then transitioned to the signal wait state (69). Once the signal tracking process has been created, the signal tracking data is transferred to the signal processing process (66) and then transitioned to the signal waiting state (69).

In the trace waiting state (70), when a signal trace deletion request comes from the operator (71), it is checked whether the signal trace is valid (72), and if the signal trace is not valid, an error is output and terminated (73). The RDH (22) block modifies the database (74), notifies the TDH (23) block of deletion of the signal trace information (75), and the TDH (23) block deletes the information about the corresponding root number from the shared library (76). Transition to the standby state for tracking (77).

When the trace wait state 78 receives an output request for signal trace state from the operator (79), the RDH 22 block formats (80) the mortgage signal trace state in the database and outputs it to the operator terminal (81). Transition to the tracking wait state (82).

The present invention as described above provides the information to solve the problem by the operator can easily monitor the contents of the No.7 signal processing message, and various problems such as No.7 signal processing generated when interworking with other systems. It is possible to trace the messages generated by the unit of call, and the maintenance / maintenance messages generated during the call can be traced at the same time, so that the system can identify the handling of the system when the system is in an abnormal state, thus increasing the availability of the relay line, It has the effect of improving the quality of call services.

Claims (4)

In the common-line signaling method integrated information communication network user part (No.7 ISUP) signal tracking method applied to a distributed control exchange system, an initial address message (IAM) after modifying a database and a shared library according to a signal tracking registration request of an operator. Receives an Initial Address Message to start the tracking process, receives signal tracking time completion information to stop tracking, receives a call-related message to track the signal, and receives a non-call-related message to generate the signal tracking process. Tracking a signal or outputting signal tracking data according to the first step; A second step of deleting a route number under signal tracking according to an operator's request to delete the signal tracking; And a third step of formatting the signal tracking data according to the signal tracking status output request of the operator and outputting the signal tracking data to the operator. The method of claim 1, wherein the first step is, if a signal tracking registration is requested from an operator in a tracking standby state, after checking the validity of the signal tracking, storing the signal tracking information in a database and recording the signal tracking target route number in a shared library. Transitioning to a signal standby state; A fifth step of generating a signal tracking process and transitioning to the signal waiting state if the route of the corresponding relay line is a signal tracking target after receiving and transmitting an initial address message in the signal waiting state to a large power station; Generating a signal tracking process and transiting to the signal waiting state if the route of the corresponding relay line is a signal tracking target after receiving an initial address message from a large station in the signal waiting state; A seventh step of notifying the signal tracking stop when the signal tracking time requested by the operator in the signal waiting state is completed, modifying the shared library, and then transitioning to the tracking waiting state; After transmitting and receiving a call-related message in the signal waiting state, if the route of the corresponding relay line is a signal tracking target, the signal tracking data is transmitted to the signal tracking process, and if the message type is a termination type, the tracking data stored in the signal tracking process is formatted and the operator terminal is transmitted. An eighth step of outputting the signal to the signal standby state; And after receiving and transmitting the non-call related message in the signal waiting state, if the route of the corresponding relay line is a signal tracking target, examines whether a signal tracking process for the corresponding relay line is generated, and if the signal tracking process is not generated, the data is formatted and the operator And a ninth step of transitioning to the signal waiting state after outputting to the terminal and transferring the signal tracking data to the corresponding signal processing process after the signal tracking process is generated. User part (No.7 ISUP) signal tracking method. 4. The method of claim 2, wherein the fourth step includes, when two or more routes are used, a route number that is already registered, and a relay line is not assigned to the route, the signaling method is not an ISUP user unit (ISUP). And a tenth step of outputting and terminating an error if the signal tracking is not valid because the case and the route number do not exist in the system. 4. The method according to any one of claims 1 to 3, wherein the second step comprises: an eleventh step of checking whether a signal trace is valid when a signal trace delete request is received from an operator in a trace standby state; A twelfth step of outputting an error and terminating if signal tracking is not valid as a result of the eleventh step of investigation; And a thirteenth step of modifying the database, notifying the deletion of the signal tracking information, deleting the information on the corresponding route number, and transitioning to the tracking standby state if the signal tracking is appropriate as a result of the investigation of the eleventh step. Preliminary Signaling Method for Line Signaling System (No.7 ISUP)