KR970009543B1 - Continuity test control method of no.7 signalling - Google Patents

Abstract

The method is for controlling a continuity examination by an operator in TDX. The method comprises: a first step(6,7) of determining a correspondent trunk when the continuity examination with respect to an outgoing-incoming trunk in upc(isdn user part control) main process is required by the operator; a second step(8-13) of producing a treatment process for a continuity reexamination of an outgoing trunk when the correspondent trunk is the outgoing trunk; a third step(14-19; 21-24) of producing a treatment process for a continuity reexamination of an incoming trunk when the correspondent trunk is the incoming trunk and then reporting the fact of producing the continuity reexamination of the incoming trunk to a upi(isdn user part interface) block.

Description

Continuity test control method of No.7 signal system by operator

1 is an overall structural diagram of an all-electronic exchanger which is a distributed control system to which the present invention is applied,

2 is an internal block diagram for implementing the continuity test function of the No.7 signal type user unit in the electronic switchgear;

3 is a flow chart for generating a continuity retest processing process by an operator in the No. 7 signaling user part of an electronic switching system according to the present invention;

4 is a flow chart for controlling the continuity retest processing of the outgoing line by the operator in the No.7 signal system user part of the electronic switching system;

5 is a flowchart illustrating a control procedure for re-testing continuity of incoming line by an operator in the No. 7 signal system user unit of an electronic switching system.

The present invention relates to a method for controlling the continuity test of the No. 7 signaling method by an operator confirming the reliability of a communication line and the state of transmission of a signal message with a large station.

Common channel signaling (CCS: No.7 signaling) has the characteristic of setting up a call and monitoring a line by transmitting a signal message with a large station using a common separate signal channel. Due to these characteristics, it is necessary for the operator to check the reliability of the call line and the quality state on the transmission path when implementing No. 7 signaling in an all-electronic switching system, which is a distributed control system. In other words, with the advent of the high information age, it is necessary to establish an Integrated Services Digital Network (ISDN) that can provide users with more economical, high-quality services and various voice and non-voice services. In addition, it is difficult to transfer various comprehensive information through the existing channel associated signaling (CAS), and the inter-station signaling method is adopted as the No.7 signaling method, which is a common channel signaling method (CCS: Common Channel Signaling). Was done. DC loop (Decadic Pulse) and MFC R2 (Multifrequency Compelled) signals, which are the existing individual line signaling methods, have the same transmission line and call line of the signal, so that no separate quality inspection of the call path is required, but the common line signaling method ( CCS: Common Channel Signaling (No.7) signaling method transmits a signaling message with a power station through a separate signal link to monitor call setup and line, so that the operator can ensure the quality of the path and reliability of the call line. Continuity test function is required.

The present invention, which was devised to meet the above needs, is divided into a signal line and a call line in the No. 7 signal system, which is a common line signal system, so that a digital line and an analog line that do not have a failure detection function by an operator are provided. Only by performing separate reliability and quality checks, it is possible to provide reliable voice and data services to subscribers, so continuity of No. 7 signaling method by the operator to provide reliable voice and data services to subscribers. The purpose is to provide a test control method.

In order to achieve the above object, the present invention, in the continuity test control method applied to all-electronic exchange, which is a distributed control system, requests for continuity test for the incoming and outgoing line by the operator in the UPC (ISDN User Part Control) main process A first step of determining a corresponding relay line if received; A second step of generating an outgoing line continuity retest processing process if the corresponding relay line is the outgoing line after performing the first step; And performing a first step of creating a incoming line continuity retest process after the first step is performed, and then notifying the ISDN User Part Interface (UPI) block to generate the incoming line continuity retest process. It was.

This is a method to control the continuity test function of No.7 signaling method by the operator in the electronic switchboard, which is separated from the call processing process, and is formed by performing a separate process, so that the reliability of software and the change of software structure can be minimized. Changes are possible.

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

1 is an overall system structure diagram of an all-electronic exchanger which is a distributed control system to which the present invention is applied.

In terms of the structure of an electronic switching system, a distributed control system can be divided into three sub-systems, namely, a Central Control Subsystem (CCS), an Interconnection Network Subsystem (INS), and a plurality of Access Switching subsystems (ASS).

CCS is a subsystem that performs the overall MA functions of the system. It also controls disk and M / T as well as test and measurement for system level maintenance and maintenance, operator input and output data control, statistics and billing functions. It is performing a management function.

INS is located at the center of the system to connect ASS to each other or between ASS and CCS, and manages and connects / cuts the space switch in the TST switch structure. It also performs the route control function and has a network synchronizer to generate and supply the system clock.

ASS can connect up to 60 ASS through INS, and it is equipped with subscriber and trunk device, T-switch device, various signal processing device, packet handler, CCS No.7 signal device, network interlocking device, etc. Perform processing and own MA functions.

The structure of ASS is ASS-S (Subscriber), ASS-T (Trunk), ASS-7 (No.7), ASS-P (Packet), ASS-S / T (Subscriber and Trunk) etc. Any combination of may be configured to have a horizontal dispersion structure.

2 is an internal block diagram for implementing the continuity test function of the No. 7 user part in the electronic switching unit. In terms of control, an electronic switch can be divided into main control, which is a higher level function, and peripheral control, which controls a device, and a manganese connection, a channel for exchanging information between these controls. can be divided into (interworking).

The processor of the upper control system includes an Access Switching Processor (ASP), an Interconnection Network Processor (INP), an Operation and Maintenance Processor (OPM), an Number Translation Processor (INP), etc. The processors of the lower control system include a TIP (Trunk Interface Processor), It is divided into a Time Switch Processor (TSP), a Local Service Processor (LSP), a Space Switch Processor (SSP), and a Signaling Message Handling Processor (SMHP). These processors interoperate with each other through Control Interworking (CI).

The processor system accommodated in INS includes NTP and SSP. Among them, NTP provides number translation and route information requested by each ASP. SSP controls the SSW (Sapce Switch) equipment to interconnect TSW (Time Switch) in each ASS. A note performs a function.

The processor system accommodated in ASS includes ASP, TIP, TSP, LSP, CIP, SMHP, etc. Among them, ASP is composed of a plurality of upper blocks to control various devices of ASS to control upper control functions such as call processing and own MA function. In particular, UPC (ISDN User Part Control), the No.7 user block control block in the ASP, is assigned to the main process and ISUP root to perform maintenance, maintenance, and creation and management of child processes. Outgoing line processing process to perform call control and call status control function with incoming outgoing line, incoming line processing process to perform call control and call state control function with incoming line assigned to ISUP route, outgoing line assigned to ISUP route Outgoing line processing continuity test process for performing continuity retest and repeat test control for incoming line and incoming line processing continuity test process for incoming line It has a parallel processing structure.

UPI (IDS User Part Interface), the No.7 user part matching block, is realized as a single process structure to perform ISUP message conversion, CIC (circuit identfication code) management and conversion, and TIP controls TU (Trunk Unit) devices. It is responsible for monitoring the access relay line and receiving and transmitting Line and Register signals, and TSP controls time switch (TSW) device to connect various devices in ASP and SSW (space switch) in INS. The LSP controls the Local Service Unit (LSU) to transmit and receive R2, DTMF, CCT and Tone signals, and monitor the operating status of the device. Especially, the continuity test is a T-switch that connects the LSU and TU. It uses the route to transmit the tone to the station, and when the station also receives the tone, it sends the tone to the calling exchange in the same way. SMHP is in charge of sending and receiving messages with No.7 signaling.

The transmission / reception of ISUP message is distributed to ASS-T through SDL (signal data link), which is an internal fixed up path of TST that connects TU of ASS-T connected to large power and CSU of ASS-7. It is sent / received.

3 is a flowchart illustrating a process of generating a continuity retest process by an operator in user No. 7 of the electronic switching unit.

(1) When the continuity test is requested for the access relay line by the operator in the UPC main process

(2) If the corresponding trunk is outgoing

(3) Create outgoing line continuity retest processing processes.

(4) If the trunk line is the incoming line, create the incoming line continuity retest process.

(5) Notify the UPI block to create the incoming line continuity retest processing processor.

4 is a flow chart of a method for controlling the continuity retest processing of the outgoing line by the operator in the electronic switch No. 7 user part.

(6) The generated outgoing line continuity retest processing process starts T25, which is a continuity retest request timer.

(7) The state of the call is shifted to the state of continuity retest processing.

(8) When timer T25 expires in the continuity retest processing state,

(9) require the connection of signaling equipment;

(10) After requesting continuity test with LSP

(11) After sending a continuity retest request message (CCR) to the country.

(12) After driving continuity test result T24,

(13) The state of the call is shifted to the state of continuity retest processing.

(14) If a continuity test result is notified from the power in the continuity retest processing state,

(15) Terminate the timer T24 that was running.

(16) If the continuity retest is successful

(17) require the release of connected signaling equipment;

(18) notify the Great Power of the release of the circuit due to the success of the continuity test;

(19) The state of the call is shifted to the continuity retest process.

(20) If the continuity test results in T24, the wait timer,

(21) If the continuity retest fails, request release of the connected signaling equipment.

(22) send a continuity test result message (COT) to notify the power station of the continuity test failure;

(23) Drive the guidance timer T26 for continuity repeat test

(24) The state of the call is shifted to the state of continuity retest processing.

(25) The timer T26 for the continuity repeat test has expired.

(26) require the connection of signaling equipment;

(27) After requesting a continuity test with the LSP

(28) After sending a continuity retest request message (CCR) to the country.

(29) After driving continuity test result T24

(30) The state of the call is transferred to the state of continuity retest processing.

(31) When a call cutting completion message (RLC) is received from the large station, indicating that the call has been cut.

(32) notify the success of the continuity retest;

(33) Terminate the outgoing outgoing process for continuity retest.

(34) When requested by the operator to terminate the continuity retest

(35) Terminate the timers T24 and T26 that were running.

(36) require the release of connected signaling equipment;

(37) notify the Great Power of the release of the circuit at the end of the continuity test;

(38) The state of the call is shifted to the state of continuity retest processing.

5 is a flowchart of a method for controlling continuity retest processing of incoming trunks by an operator at user No. 7 of an electronic switching system.

(39) The generated incoming line continuity retest processing process starts T27, which is a continuity retest request timer.

(40) The state of the call is shifted to the continuity retest processing state.

(41) When a continuity retest request message (CCR) is received from a large country

(42) Terminate the timer T27 that was running

(43) After driving the continuity retest timer T34

(44) require the connection of signaling equipment for continuity retests;

(45) After requesting continuity test with LSP

(46) The state of the call is shifted to the state of continuity retest processing.

(47) When a release message (REL) is received from the large station informing of the success of the continuity retest.

(48) End the timer T34 which has been running.

(49) require disconnection of connected signaling equipment;

(50) send a Call Release Complete message (RLC) to notify the player that the call has been released;

(51) Terminate immersion process for continuity retest.

(52) When a continuity test result message (COT) is received from the large station informing the failure of the continuity retest.

(53) End the timer T34 that was running

(54) require disconnection of connected signaling equipment;

(55) Drive timer T27 for continuity repeat test

(56) The state of the call is shifted to the state of continuity retest processing.

Therefore, the present invention as described above, can be used as a method of implementing the continuity test function by the operator when implementing the No.7 signaling system user part, which is the common line signaling system in the general exchange, and guarantees the reliability of the call line The improvement can be made, and there is an effect of improving the completion rate of the call.

Claims (1)

A method for controlling a continuity test by an operator in an electronic switch, which is a distributed control system, comprising: a first process (6, 7) of driving a continuity retest request timer and then transitioning a call state to a continuity retest processing state; A second step (8 to 13) of requesting the continuity test and transitioning to the continuity retest processing state when the timer expires in the continuity retest processing state after performing the first process; After performing the first process, in the continuity retest processing state, the third step (14 to 19, 21 to 24); A fourth step (20 to 24) of driving a guide timer for continuity repetition test and transitioning a call state to a continuity retest processing state when the continuity test result wait timer ends after performing the first step; A fifth step (25 to 30) of transitioning a call state to a continuity retest processing state after transmitting the continuity retest request message to the power when the timer for continuity repetition test expires after performing the first step; A sixth step (31 to 33) of notifying the success of the continuity retest and terminating the continuity re-exiting process when receiving the call disconnection completion message from the power after performing the first step; And a seventh process (34 to 38) of terminating the timer in operation, notifying the release of the line to the power station, and transitioning the call state to the continuity retest processing state when the operator is requested to end the continuity retest by the operator after performing the first process. An eighth process (39, 40) for generating the outgoing line continuity retest processing process, including a), and driving the continuity retest request timer and then transitioning the state of the call to the continuity retest processing state; A ninth process (41 to 46) of transitioning the call state to the continuity retest processing state after requesting the continuity test to the local service process after receiving the continuity retest request message from the power after performing the eighth process; A tenth step (47 to 51) of transmitting a back release completion message to the big country and ending the incoming process for continuity retesting when the release message is received from the big country after performing the eighth step; And after step 8, when receiving a continuity test result message indicating failure of continuity retest from the power, step 11 of terminating a running timer, driving a timer for continuity repetition test, and transitioning a call state to a continuity retest processing state. And a No. 7 signaling method continuity test control method for generating a incoming line continuity retest process, including (52 to 56).