KR20000014995A - Method for checking calling path of switching system - Google Patents

Abstract

PURPOSE: A method for checking a calling path of a switching system capable of checking the calling path when something is with a calling path is provided. CONSTITUTION: A method for checking a calling path of a switching system, the method comprising the steps of: inserting a predetermined packet into a pattern insertion part in which a calling path is required, the predetermined packet including a check method, a board or loop path to be checked, and a pattern extracting location; transmitting the predetermined packet through the calling path; looping through the looping path having the predetermined packet when the checking method of the predetermined packet is a looping method; extracting the predetermined packet looped by the looping method or the predetermined packet transmitted by a single path method from the pattern extracting location having the predetermined packet; and checking a desired path through the extracted packet.

Description

Diagnosis method of currency of exchange system

The present invention relates to a maintenance function of an exchange system, and more particularly, to a method for detailed diagnosis of a call path for each section.

In general, exchange systems have been divided into various types for different purposes, such as by region or by service type. However, with the rapid development of the telecommunications and electronics industries today, exchange systems have begun to meet any of the above objectives. That is, depending on the service area, it can be used for local, local / tandem and toll exchange systems, and ultimately referred to as Public Switched Telephony Network (hereinafter referred to as "PSTN"). ), As well as the Integrated Service Digital Network (hereinafter referred to as "ISDN"), as well as the Advanced Intelligent Network (hereinafter referred to as "AIN"), and the Public Land Mobile Network (hereinafter referred to as "PLMN"). It is developing into a flexible exchange system in various network forms.

In addition, modular hardware or software makes it easy to add and change functions, making it easy to adapt to a variety of network environments, so that not only common line signaling (CCS No. 7) but also ISDN basic / first-class access (2B + D / 23B + D, 30B + D access) and packet processing functions can be easily implemented.

Such a switching system serves various additional functions in addition to the main function of switching each subscriber. Among such additional functions, a switching system maintenance function is included. This maintenance function is an additional function that monitors the current operation status of the exchange system and thus enables the exchange system to perform optimal service. The maintenance function includes a function of diagnosing an internal call path to smoothly service an exchange service, which is a main function of the exchange system.

The conventional operation of diagnosing the internal call path is as follows. The internal call path diagnosis is a test performed to check for an abnormality of a voice call line between any access network subsystem (ANS) and any ANS, and transmits data from the sending side ANS and the receiving side ANS. This function is to check the data in and output the test result. That is, one to many check tests are performed.

As an example of the call path diagnosis operation, when "C8320 TEST-LP: SUBS1 [, SUBS2] [, DATA] [, PERD] [, CNTR];" is input as the call path diagnosis request, SUB1 (send Check IJ on ANS (Access Network Subsystem) side to check whether IJ for pattern generation and installation of Time Switch & Local Data Link (TSL) unit equipment. Also check the status check (Equip, Abnormal status) on the SUBS2 (receive ANS) side. The signal is sent to the main process of SUBS2 to receive a test signal (test signals LkPathChkCtrlRq and LkPathChkctrlRQ) for use in checking and testing the state of a time switch (TSW). Specify the ts of SUBS1 (fixed to ts = 992; for testing). A connection request is made to a space switch (SSW), and a connection notification is received from a switch network part (SNP). A pattern is transmitted from SUBS1 to the TSP path and a signal is sent to SUBS2 to check whether the TSP of the receiving ANS is reading the pattern. The SUBS1 requests to stop the generation of the pattern to the TSP, the SSW to disconnect the request, and other equipment is also released.

At this time, if the period is not input, the period is 5 seconds, and if no "CNTR" is input, it is performed once. At this time, if the test result is abnormal, check the status of TSW, SSW and subscriber concentrator. Tests such as the TSW control memory test (TEST-TSW-CM), which is a section test, are performed.

As described above, it was possible to diagnose whether a failure occurred when diagnosing a call path in the prior art, but it was difficult to identify which section of the call path actually occurred.

SUMMARY OF THE INVENTION An object of the present invention for solving the above problems is to provide a method for diagnosing a failure occurring when a failure occurs in diagnosing a call path.

Another object of the present invention is to provide a method for performing a test by connecting the channels substantially in order to identify software path sections that have a failure.

It is still another object of the present invention to provide a method for precisely diagnosing a test for an existing channel path by enabling the test of paths for respective boards in a detailed path path.

The present invention for achieving the object as described above is a communication path connecting each board constituting the exchange system, the looping paths to the input and output terminals of each board, and inserting and extracting the pattern on the currency path and each board Configuring a position, inserting a predetermined packet comprising a diagnosis method, a board or a looping path and a pattern extraction position to be diagnosed into the pattern insertion position to be diagnosed by a call, and transmitting the predetermined packet through the call path And looping through a looping path constituting the predetermined packet if the diagnosis method of the predetermined packet is a looping method, and the predetermined packet looped by the looping method or the predetermined packet transmitted by a single path method. Extracting at a pattern extraction position constituting the predetermined packet, and diagnosing a desired path through the extracted predetermined packet Implements a diagnostic method in the currency of the exchange system of the process.

1 is a diagram conceptually illustrating a connection state of a configuration on a call path path according to an embodiment of the present invention;

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, for the precise test, the section about the channel section is divided as follows.

Call route test between T switch PBA of the same ANS for the first section, T route test between S switch PBA of the ANS switch for the second section, and T switch of S switch from the T switch of ANS for the third section Test route section between ANS PBAs, test route section between T-switches of the main station ANS in the remote access network subsystem (RANS: Remote ANS) for section 4, and test route section of S-switch PBA from the RANS station to the 5th section. Segment, RANS to the 6th section, passing through the home country, passing through the S switch, T-switch PBA of the other ANS Segment test, R7 to the 7th section, passing through the home country, through the S switch, through the T switch of the other ANS, connected to the RANS The test of the route to the PBA of the route, the route test test of the route from the S switch to the PBA of the ANS or the PBA of the RANS connected via the ANS.

Such an exchange system generally has a time switch-space switch-time switch structure, which is generally referred to as a TST structure. Therefore, in the present invention, by testing the path between the boards constituting the TST structure to achieve the effect of testing the path connected to the actual call. FIG. 1 is a diagram illustrating such a structure, and illustrates a configuration of a PBA related to a currency path configuration according to an embodiment of the present invention. This indicates the connection state between the boards on the path to the path, and RANS (not shown) can be connected to the ANS 110, 130 as shown in FIG. 1, and the ANS 110, 120 connected to the RANS is connected to the mother country. This is called. The RANS is connected to SMDC cards 112 and 132 provided in each of the ANS 110 and 130 through a maximum of eight E1 links as a trunk card to form a call path. In this case, ANS 110 and 130 shown in FIG. 1 denote a time division switch, and SNS 120 denotes a space division switch.

Conventionally, even if a failure is detected during a test on a call path, an operator cannot be notified of a problem section of the call path, but the path check between the path PBA boards using the connection function between the call paths according to the present invention described above. Implementing the function makes it easier to diagnose maintenance. A detailed description of the above function is as follows. First, the implementation of the command for detailed test of the channel is "TEST-PATH: SUBS1 = a, PBA1 = b [, SUBS2 = c] [, PBA2 = d] [, TYPE = e] [, DATA = f] [, PERD = G] [, CNTR = h] ". Herein, the conditions for the input and the processing when omitted are as mentioned below.

SUBS1 and PBA are input, and when there is no PBA input, it is regarded as SMDC0. SUBS2 can be input through two && but no input or only one can be entered. If no input is made, all ANSs are tested. If PBA2 is input, SUBS2 must be input. If no input is input, it is regarded as SMDC0. Test types include loop-back and one-way paths, in which case SUBS2 and PBA2 must be input. SMDS does not have a loop-back function. Test pattern data can have a value from 0 to 255. If no input is made, it is regarded as H'55. The cycle to repeat the output (SEC) can have a value from 1 to 60, but if no input is made, it is 10 seconds, and the number of repeat output can have a value from 1 to 20. Perform. If test_type is loop-back type and chk_pda is SSMC, test_type is single path and chk_pda converts internally to gen_pda.

Hereinafter, an operation according to an embodiment of the present invention will be described in detail with reference to the above configuration. First, ㉮ to 도시 shown in FIG. 1 mean a call path (a path according to a single path method), and this call path means a path of “ANS-space split switch-ANS”. The actual test path, however, is via a path that includes RANS, such as "RANS-ANS-space split switch-ANS-RANS". In Fig. 1, the numerals 1 to 9 indicate the insertion and extraction positions of the patterns. The SMDC 112 and 132 of the ANS 110 and 130 have the insertion and extraction at the odd and even of the channel 0 of the SHW31. In TSWC 114 and 134, insertion and extraction take place on channel 31 of SHW31. In addition to the channel and the pattern insertion and extraction positions, ⓐ-ⓛ shown in FIG. 1 indicate a looping position, and TSWC 114 and 134 indicate looping for all SHW channels on even side of the intra jutor. Yes, up to 4K selective looping is switched to LOTC116,136. The LOTCs 116 and 136 are looped at 2047TS coming from COTC 122, 126 or LOTC. The COTC 122, 126 is looped from 2047TS coming from LOTC 116, 136 and SSMC 124.

First, the pattern insertion and extraction positions shown in FIG. 1 will be described. In (1), SMDC 112 is inserted into and extracted from SHW 31 channel 0 even, and SHW31 and channel 0 are radiated. And extraction, ③ LOTC 116 inserts and extracts TS0 to TSWC 114 side, and ④ LOTC 116 inserts and extracts TS0 to COTC 122 side, ④ COTC 122 inserts and extracts TS0 to LOTC 116 side from ⑤, SSMC 124 to COTC 122 side from ⑥ In all time slot insertion and extraction, the SSMC 124 inserts and extracts all time slots to the COTC 126 side. At this time, the call path from the ANS 130 to the SSMC 124 is the same as the above-described call paths to the ANS 110 and the SSMC 124 and will not be described.

Next, referring to the looping position shown in Fig. 1, at ⓐ TSWC 114 is all SHW in the even side of the intra-junction, looping for all channels, at ⓑ TSWC 114 is the maximum 4K selective looping switched to LOTC 116 side, LOTC at ⓒ 116 loops 2047TS coming from TSWC 114 side, LOTC 116 loops 2047TS coming from COTC 122 side at ⓓ, ⓔ COTC 122 loops 2047TS coming from LOTC 116 at ⓔ, and COTC 122 is 2047TS coming from SSMC 124 side at ⓕ Looping Since the looping position is also the same as the above-described communication path, the looping positions from the respective ANS 110 and 130 to the SSMC 124 are the same, and thus the description thereof will be omitted.

Looking at each of the test paths with reference to the channel and the looping position described above is as follows.

The current on-line test path is divided into three main paths, which can be divided into LP test, SP test, and SN-link test. The LP test is performed in the form of "①insertion → ㉮ → ㉯ → ㉰ → ㉱ → ㉲ → ㉳ → ㉴ → ㉵ → ⑫ extraction", and the SP test is "① insertion → ㉮ → ⓐ looping → ㉮ → ① extraction. It is made in the form, and the SN-link test is made in the form of "④ insertion → ㉰ → ⑤ extraction", "⑤ insertion → ㉰ → ④ extraction".

Meanwhile, a path that can be implemented in the present invention can be largely divided into a path by a single path and a path by a looping method. First, look at all the paths according to the single path method, "①insert → ㉮ → ②extract", "②insert → ㉮ → ①extract", "②insert → ㉯ → ③extract", "③insert → It is divided into the form of "㉯ → ② extraction", the form of "④ insertion → ㉰ → ⑤ extraction", the "⑤ insertion → ㉰ → ④ extraction", and the "⑥ insertion → SSMC → ⑦ extraction".

Second, look at the path by looping method, "①insertion → ㉮ → ⓐ looping → ㉮ → ① extraction", "①insertion → ㉮ → ⓑ looping → ㉮ → ① extraction", and "①insertion" → ㉮ → ㉯ → ⓒ looping → ㉯ → ㉮ → ① extraction ”and“ ①insertion → ㉮ → ㉯ → ㉰ → ⓔ looping → ㉰ → ㉯ → ㉮ → ① extraction ”,“ ①insertion → ㉮ → ㉯ → ㉰ → ㉱ → SSMC switching → ㉱ → ㉰ → ㉯ → ㉮ → ① extraction ”,“ ⑦ insertion → SSMC switching → ㉱ → ⓕ looping → 루 → SSMC switching → ⑦ extraction ”and“ ⑦ insertion → SSMC switching → ㉱ → ㉰ → ⓓ looping → ㉰ → ㉱ → SSMC switching → ⑦ extraction ”.

As described above, the present invention has the effect of improving the reliability of the maintenance function of the call path system by diagnosing the failure of the call path in detail.

Claims (1)

In a method for diagnosing a currency path in an exchange system, By configuring each of the communication paths connecting the boards constituting the exchange system, looping paths at the input and output ends of the respective boards, and pattern insertion and extraction positions on the communication paths and each board, Inserting a predetermined packet comprising a diagnosis method and a board or a looping path and a pattern extraction position to be diagnosed into the pattern insertion position to be diagnosed by a call; Transmitting the predetermined packet through the communication path; If the diagnostic method of the predetermined packet is a looping method, looping through a looping path constituting the predetermined packet; Extracting the predetermined packet looped by the looping scheme or the predetermined packet transmitted by a single path scheme at a pattern extraction position constituting the predetermined packet; Diagnosing a desired path through the extracted predetermined packet, the communication path diagnostic method of the exchange system.