JPS5937907B2 - Signal monitoring method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an interrupt connection for a protection channel module at a junctor to transmit digital signals on the channel, especially billing signals,
This invention relates to a signal monitoring system that inputs various signals such as signal tones and talk signals into a digital channel testing device and monitors the normality of the various signals.

There has been remarkable progress in components for time division switches (especially memory ICs), and as these components become faster, time division switches are moving towards higher multiplexing and higher efficiency usage.

On the other hand, in order to meet the demands for lower initial costs and wider bandwidth, the switch itself must be modularized and easily serve as a building block. Due to these trends toward high multiplexing and modularization, as well as the ease of software control, the digital communication path configuration has become time switch-space switch-time switch (T-S-T) configuration, and furthermore, time switch two-stage (T2) type configuration. However, when monitoring the normality of signal transmission and reception within these building block digital communication paths, conducting tests by connecting highways from each digital communication path will unnecessarily increase the amount of highway cables. , it is not possible to construct an economical signal monitoring device. An object of the present invention is to eliminate the drawbacks of the prior art described above, and to provide an economical signal that enables a backup communication path module, which was originally provided for system reliability, to be interruptedly connected by a junctor, and various signals can be drawn in from there for testing. The objective is to provide a monitoring method. In the present invention, since the Tr channel module, including its backup channel module, can be interruptedly connected to any highway on the jumper switch, the normal highway to be tested can be interruptedly connected on the jumper to make a backup call. If it is pulled into the road module, it will be possible to perform tests using digital test equipment. below,
Embodiments of the present invention will be described with reference to the drawings. Figure 1 shows
1 is a block diagram showing one embodiment of a digital communication path monitoring method according to the present invention; FIG. In FIG. 1, 1 is a billing signal;
A digital channel test device that tests the normality of various signal tones, talkies, etc. 2 is a digital juncture switch.
The communication path modules 51, 61 and 52, 62 are exchanged and connected to each other in a time-division manner. Reference numerals 53 and 63 denote standby communication path modules, which can be switched to the communication path modules 51, 61 or 52, 62 using the highway selectors 41, 71 or 42, 72.

FIG. 2 shows highway selectors 41, 42, 71, 72.
FIG. 2 is a detailed block diagram illustrating the operation of FIG.

When the currently used communication path modules 51, 61 are switched to the backup communication path modules 53, 63, the highway selector 41, which corresponds to the communication path module 51, 61 to be switched, is located behind the highway selector provided for the communication path module. 71 and connect as shown in the figure.

At the same time, replace the junk switch with the backup channel module. This connection allows the incoming highway 31 to be connected to the secondary channel module 62 via the spare primary channel module 53. In addition, by creating a path from the primary channel module 52 or 53 to the intra-office outgoing highway 8V, a time slot is drawn into the digital channel test device 1 via the secondary channel module 61, and the test is performed in the same manner as before switching. Is possible.
Returning to FIG. 1, the time slot groups of the incoming highways 31 and 32 are connected to the primary channel modules 51 and 52, respectively, the incoming highways 31' and 3Z1, the junctor 2, and the outgoing highways 8'2' and 81'. When being exchanged to the outgoing highways 82, 81 via the secondary channel modules 62, 61, the junker memory 9, which is a semi-permanent memory,
The content of Call path module 63
, the time slot group of the incoming highway can be brought into the digital channel testing device 1 via the outgoing test highway 83 and monitored. By making this junker memory 9 have a complete group switch configuration, it is possible to select any incoming highway within the station, and the incoming highway 3
It becomes possible to draw all the time slot groups 1 and 32 into the digital communication path test device 1 and test them. Next, the method of retracting the time slot will be described in detail with reference to FIG.

2 is a junk switch, which is located on Highway 101 on the station entrance side.
104 and the intra-office exit highways 201 to 204, 10 is an address decoder for decoding the intra-office exit highway number, and 9 is a junctor memory for decoding the intra-office exit highway number. This is a rotating memory in which numbers are used as addresses, and the numbers of intra-office incoming highways HWAlOl to HWSlO4 to which the intra-office outgoing highways are connected are written.

The address decoder 10 is passed through the time slot A, and the intra-office outgoing highway 20 is set according to the contents of the junker memory 9.
When the content HWC of the address corresponding to 1 is read, the station ingress way 103 changes to the in-house outgoing highway HWA'201.
connected to. Therefore, the highway HWClO3 is placed at the address corresponding to the highway 204 in the junker memory 9.
By writing the corresponding ingress highway number, it is possible to take out the time slot A of the HWC also in the HW da, that is, the egress highway 204 in the backup station.

Of the junker memory 9 which is a rotating memory in this way,
It can be seen that time slots can be drawn from the ingress highway to any number of outbound highways by writing the pull-in source highway number in the address corresponding to the outbound highway number to which the ingress time slot is to be drawn.

As described above, by rewriting the contents of the junker memory and multiple branching the time slot group of the incoming highway to the spare outgoing highway, it is possible to digitally convert any incoming time slot group without creating a separate highway. It becomes possible to monitor the communication path test equipment.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a signal monitoring method for a digital communication path related to the present invention, FIG. 2 is a diagram showing an embodiment of a highway selector switching method, and FIG. Figure 3 is a detailed diagram illustrating one embodiment of a method for pulling a time slot onto a test highway; 1: Digital communication path test device, 2: Junction switch, 31, 32: Ingress highway, 3V to 33': Internal incoming highway, 41, 42: Ingress highway selector, 51 to 53: Primary communication path module , 61-63:2
Next channel module, 71, 72: Outgoing highway selector, 81, 82: Outgoing highway, 8V to 8y: Internal outgoing highway, 9: Junctor memory, 10: Address decoder.

Claims (1)

[Claims] 1. In a digital exchange having a digital communication path configured by a time switch multi-stage communication path module having a redundant configuration and a junction switch that connects the primary side and the secondary side of the communication path module, digital communication is performed. Means is provided for connecting the road test device to the outgoing highway side terminal of the secondary module of the active or backup channel module, and the secondary protection channel module is connected to the highway side terminal of the secondary module of the active or backup channel module within the junction switch. A signal monitoring method, characterized in that a digital signal on the highway is monitored by interrupting and connecting the highway to the digital communications path testing device via the backup communications path module and the connecting means.