JPS63285054A - Normality checking system for standby signal terminal equipment in common line no.7 signal system - Google Patents

Abstract

PURPOSE:To attain quick changeover by setting a loopback path through which a signal sent from a standby signal terminal equipment is returned as it is to the standby signal terminal equipment by a time switch and allowing a test equipment in an exchange to send a No.7 signal to the standby signal terminal equipment. CONSTITUTION:An exchange main body processor 14 controls a time switch 10 via a control line 100 to form a turn back path 102. When the exchange main body processor 14 gives a test command to the signal terminal test equipment 13, the equipment 13 gives an activation request to the terminal equipment 12 and sends a proper No.7 level 4 signal to the equipment 12 after confirming its activation. Then the turn back path 102 is used and itself is regarded to be an opposite station signal terminal equipment, the normal procedure of alignment is applied, and after the end of alignment, the No.7 level 4 signal having a transmission request from the signal terminal equipment is sent in a form of regarding itself as the opposite station signal terminal through the loopback path 102 and the reception signal is informed to the signal terminal test equipment 13.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a normality check system for a backup signal terminal in a common line No. 7 signal system.

[Conventional technology]

Conventionally, common line No. In the 7-signal system, it is rare to have a spare as a signal terminal, and if a spare is installed, it is installed in an inactive state, and the test of the spare signal terminal is performed by creating a return bus within the signal terminal. Ta.

[Problem that the invention seeks to solve]

In the above-mentioned method for testing the preliminary signal terminal in the conventional common line N087 signaling system, the signal terminal itself recognizes that it is being tested and creates a loopback bus within the own signal terminal. The disadvantage is that it is not possible to test the function of transmitting a signal to the other station and the function of receiving a signal from the other station. In addition, it is impossible to perform alignment with the other station's signal terminal on the return bus within the own signal terminal, and it is not possible to keep it in an active state as a signal terminal.Therefore, a backup signal terminal is assigned to the signal link and used. When attempting to do so, it is necessary to take an activation procedure and perform alignment with the signal terminal of the other station, which also has the disadvantage that quick switching is not possible.

[Means for solving problems]

The normality check method of the backup signal terminal in the common line No. 7 signal system of the present invention is based on the common line No. 007 signal link configured by connecting the own station accommodation signal terminal to the data link via a time switch, and the data link. In an exchange equipped with a backup signal terminal that is not connected to the backup signal terminal, a time switch is used to set a return bus in which the signal sent from the backup signal terminal returns to the backup signal terminal as it is, and the test equipment in the exchange No to backup signal terminal
, 7 signals are transmitted.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

In FIG. 1, the other station signal terminal 3
The electronic exchange 1 connected to the local signal terminal 11. which is accommodated in the time switch 10. A preliminary signal terminal 12, a signal terminal test device 13 for testing these signal terminals, and an exchange main body processor 14 connected to the time switch 10 and signal terminal test device 13 via a control line 100 and an interface bus 101, respectively. Equipped with.

Next, the operation of this embodiment will be explained.

First, the exchange main body processor 14 controls the time switch 10 via the control line 100 to create a return bus 102. Next, when the exchange main body processor 14 issues a test instruction to the signal terminal test device 13 via the interface bus 101, the signal terminal test device 13 issues an activation request to the backup signal terminal 12, and after confirming its activation, Appropriate No.

7 level 4 signal is sent to the preliminary signal terminal 12.

When the backup signal terminal 12 receives the activation request, it regards itself as the opposite station signal terminal using the return bus 102 and performs the normal alignment procedure, and after the alignment is completed, the signal terminal 12 performs the normal procedure of alignment, and after the alignment is completed, the signal terminal 12 performs the normal alignment procedure using the return bus 102. The level 4 signal is transmitted through the return bus 102 in a form that regards itself as the opposite station signal terminal, and the received signal is notified to the signal terminal test equipment R13. After that, the signal terminal test device 13 sends a No, 7 level 4 signal to the preliminary signal terminal 12, and returns the bus 1.
By receiving this through 02, the normality of the preliminary signal terminal 12 is confirmed, and the processor 1 of the exchange main body
This operation is repeated from step 4 until the stop request is received.

〔Effect of the invention〕

As explained above, the present invention has a configuration in which a backup signal terminal can regard itself as an opposite station signal terminal by a bus looped back by a time switch, and the signal terminal test device is equipped with a function to send an activation request to the backup signal terminal. Therefore, it is possible to leave the standby signal terminal in an activated state and omit the activation procedure when assigning it to a signal link. Furthermore, the bus looped back by the time switch has the effect that the standby signal terminal can check the transmission and reception functions between stations without being aware that it is playing the role of the opposite station signal terminal.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1...Electronic switchboard, 2...Data link, 3...
Other station signal terminal, 10... Time switch, 11...
Own station signal terminal, 12... Backup signal terminal, 13... Signal terminal test device, 14... Exchange main body processor, 1
00...Control line, 101...Interface bus,
102...turn back bus.

Claims (1)

[Claims] Common line No. 1 is configured by connecting the own station accommodation signal terminal to a data link via a time switch. In an exchange equipped with a 7-signal link and a backup signal terminal not connected to the data link, a time switch is used to set a return bus in which the signal sent from the backup signal terminal returns to the backup signal terminal as is, A test device in the exchange sets No. 1 to the backup signal terminal. Common line No. 7 is characterized by transmitting 7 signals. 7 signal system normality check method for preliminary signal terminals.