JP2000022816A - Subscriber circuit package switching control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To speedily deal with a subscriber accommodated in a fault subscriber circuit package by performing a logical instantaneous accommodation change to the normal reserve subscriber circuit package even when there is any speaker accommodated in the fault subscriber circuit package under speaking under control from a host device without the manual work of a maintaining person. SOLUTION: At the time of switching fault and subscriber packages 9-1 to 9-n and a reserve subscriber package 10 where any fault occurs, a host device 1 outputs fault occurrence data while using the idle time slot or idle bit of a control signal. These fault occurrence data are extracted by a fault occurrence data extracting circuit 4 and sent to a subscriber information signal switching circuit 7 and a speech line multiconnecting circuit 8 after S/P conversion due to an S/P converting circuit 5. Even while the subscriber accommodated in the package 9 is under speaking, corresponding to the signal of a timing signal preparing circuit 6, the switching circuit 7 performs the logic instantaneous accommodation change to the package 10. Thus, dealing can be speedily performed without manual work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for switching a subscriber housed in a failed subscriber circuit package to a spare subscriber circuit package when a failure occurs in a subscriber circuit package of a digital exchange.

[0002]

2. Description of the Related Art When a failure occurs in a subscriber circuit package of a conventional digital exchange, switching between a failed subscriber circuit package and a spare subscriber circuit package is performed by a maintenance person directly installing the failed subscriber circuit package. Go to the location and make a multi-connection between the telephone line connecting the subscriber's circuit and the subscriber terminal contained in the faulty subscriber's circuit package and the telephone line of the subscriber's circuit contained in the spare subscriber circuit package. By performing jumper connection in the work and changing the accommodation position data of the subscriber accommodated in the faulty subscriber circuit package to the accommodation position of the spare subscriber circuit package by a maintenance command, joining the faulty subscriber circuit package accommodation Can be accommodated in the spare subscriber circuit package. However, a subscriber circuit is installed and controlled in an unmanned station located several tens of kilometers away from the station where the host device is installed via a transmission device between the subscriber circuit device and the host device as shown in FIG. In the configuration of the remote control type digital exchange, a maintenance person has to go to the unmanned station building by making a multi-jumper connection of the communication line.

[0003] In the case of a subscriber circuit package accommodating a plurality of subscribers, if there is a user during a call among the accommodated subscribers, the subscriber accommodation position data cannot be changed by a maintenance command. All contained subscribers must wait until unused. Switching to the spare package according to the conventional method requires manual operation of a maintenance person, and in a subscriber circuit package in which a plurality of subscribers are accommodated even when changing the subscriber accommodation position data, a standby state is provided depending on the state of the accommodated subscriber. There is a drawback that time may be required, and it is not possible to quickly respond to the subscriber accommodated in the failed subscriber circuit package.

[0004]

In the prior art, when a failure occurs in a subscriber circuit package, switching to a spare subscriber circuit package is performed by a maintenance person who goes to the installation location of the failed subscriber circuit package. Switching cannot be performed unless the multi-jumper connection of the communication line is performed in the work, and the change of the subscriber accommodation position data by the maintenance command depends on the state of the accommodated subscriber in the subscriber circuit package that accommodates multiple subscribers. There is a disadvantage that a waiting time may occur.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a normal standby subscriber circuit even if there is a subscriber who is talking on a subscriber accommodated in a failed subscriber circuit package under the control of a higher-level device without manual operation of a maintenance person. It is an object of the present invention to make it possible to change accommodation at a logical moment to a package and to quickly respond to a subscriber accommodated in a failed subscriber circuit package.

[0006]

In order to achieve the above-mentioned object, a faulty information of a subscriber's circuit package is constituted by a switching instruction signal for instructing switching to a spare subscriber's circuit package and a faulty subscriber's circuit package number. Data extraction circuit for converting faulty data into a vacant time slot or vacant bit of a highway control signal and inserting the faulty data into a vacant bit in a higher-level device, and extracting faulty data from the highway control signal Conventionally, each subscriber circuit package receives each timing signal used for taking in the corresponding subscriber information signal from the highway, and can supply a timing signal corresponding to the faulty subscriber circuit package to the spare subscriber circuit package. Switch from the highway to the subscriber information corresponding to the faulty subscriber circuit package. A subscriber information signal switching circuit for switching a signal to a spare subscriber circuit package and taking in the signal, a speech line connecting the subscriber circuit accommodated in the faulty subscriber circuit package and the subscriber terminal, and a subscriber circuit package accommodated in the spare subscriber circuit package A call line multi-connection circuit for performing a multi-connection of a call line of a subscriber circuit is provided in the subscriber circuit device.

When fault occurrence information is detected by a subscriber test or the like, the fault occurrence data is converted into fault occurrence data by a fault occurrence data insertion circuit of a higher-level device, and inserted into a free time slot or a free bit of a highway control signal to be used by the subscriber. The fault occurrence data extracted by the fault occurrence data extraction circuit of the subscriber's circuit device is sent to the subscriber's circuit device and sent to the subscriber information signal switching circuit and the multi-line communication line circuit.

In the subscriber information signal switching circuit, the timing signal corresponding to the faulty subscriber circuit package detected from the received timing signal corresponding to each subscriber circuit package by the faulty subscriber circuit package number of the faulty data is switched to the faulty data. By the indication signal, switching is performed so that it can be supplied to the spare subscriber circuit package, and the subscriber information signal corresponding to the failed subscriber circuit package is handled by the spare subscriber circuit package from the highway, so that the spare subscriber circuit package is pre-subscribed. Instantaneous switching to the user circuit package becomes possible.

At the same time, in the communication line multi-connection circuit, the communication lines connecting the subscriber's circuits housed in the respective subscriber's circuit packages and the subscriber's terminals in advance, and the communication lines of the subscriber's circuits housed in the spare subscriber's circuit package. The communication line of the subscriber circuit accommodated in the faulty subscriber circuit package detected by the faulty subscriber circuit package number of the fault occurrence data is replaced with the speech line of the subscriber circuit accommodated in the spare subscriber circuit package. Multi-connection by switching instruction signal of faulty data and faulty data, it is possible to instantly connect the subscriber terminal housed in the faulty subscriber circuit package to the subscriber circuit housed in the spare subscriber circuit package become.

[0010] By the above means, even if there is a subscriber who is talking in the subscriber's circuit package under the control of the higher-level device without the manual operation of a maintenance person and is in a call, a normal standby subscriber's circuit package can be used. F. The accommodation can be changed at a logical moment.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 4, when a conventional digital exchange has n subscriber circuit packages 9, the subscriber circuit packages 9 are numbered from 1 to n. It manages and transmits / receives a subscriber information signal and a clock via the highway 11 between the host device 1 and the subscriber's circuit device 2, and each subscriber's circuit package 9
Is controlled from the high-level equipment 1 by taking in from the highway 11 by the timing signal 12 sent to each subscriber circuit package created by the timing signal creation circuit 6 for each corresponding subscriber information signal.

FIG. 1 shows an example of a subscriber circuit package switching control method based on the configuration of FIG. In FIG. 1, reference numeral 1 denotes a host device, 2 denotes a subscriber circuit device, 3 denotes a failure data insertion circuit, 4 denotes a failure data extraction circuit, and 5 denotes S
/ P conversion circuit, 6 is a timing signal generation circuit, 7 is a subscriber information signal switching circuit, 8 is a communication line multi-connection circuit, 9 is a subscriber circuit package, 10 is a spare subscriber circuit package, 11 is a highway, 12 is A timing signal to be sent to the subscriber circuit package, 13 is a timing signal to be sent to the spare subscriber circuit package, 14 is a speech line of the subscriber circuit package, and 15 is a speech line of the spare subscriber circuit package.

In the embodiment of the present invention, the package number of FIG.
The switching control method for switching to the spare subscriber circuit package will be described by taking as an example a case where a failure has occurred in the subscriber circuit package 9. The fault occurrence information detected by the subscriber circuit test or the like is converted by a fault occurrence data insertion circuit 3 provided in the higher-level device 1 into fault occurrence data composed of a switching instruction signal and a faulty subscriber circuit package number. 11 in accordance with the timing of a vacant time slot or vacant bit of the control signal 11
Send to

FIG. 2 shows a format of fault occurrence data when an empty time slot (8 bits) of the highway 11 sent from the host device 1 is used. The failure occurrence data includes a switching instruction signal bit (b7) for instructing switching from the failed subscriber's circuit package 9 to the spare subscriber's circuit package 10, and a failed subscriber's circuit package number indicating bit (b0 to b6). . The fault occurrence data sent to the subscriber's circuit device 2 is extracted from the highway 11 by the fault occurrence data extraction circuit 4 and converted from a serial signal to a parallel signal by the S / P conversion circuit 5 and provided to the subscriber's circuit device 2. The subscriber information signal switching circuit 7 and the communication line multi-connection circuit 8 are sent.

The subscriber information signal switching circuit 7 receives a timing signal corresponding to each subscriber circuit package 9 generated by the timing signal generation circuit 6, and determines that the package number detected by the faulty subscriber circuit package number of the fault occurrence data is 1 By switching the timing signal 13 sent to the spare subscriber circuit package 10 so that it can be supplied to the spare subscriber circuit package 10 in accordance with the switching instruction signal of the fault occurrence data, the timing signal 12 sent to the subscriber circuit package No. Number 1 subscriber circuit package 9
Can be taken in by the spare subscriber circuit package 10.

At the same time, in the communication line multi-connection circuit 8,
The communication line 14 of each subscriber circuit package and the communication line 15 of the spare subscriber circuit package are previously drawn in, and the detected subscriber number is the first subscriber based on the faulty subscriber circuit package number of the received fault occurrence data. A multi-connection is made to the communication line 14 of the circuit package and the communication line 15 of the spare subscriber circuit package in accordance with the switching instruction signal of the fault occurrence data, so that the subscription accommodated in the subscriber circuit package 9 having the first package number. The subscriber terminal can be connected to a subscriber circuit housed in the spare subscriber circuit package 10.

FIG. 3 shows a timing chart of a highway, a timing signal corresponding to each subscriber circuit package, and a timing signal corresponding to a spare subscriber circuit package. On the highway, a subscriber information signal corresponding to each subscriber circuit package is provided. Each of the timing signals is accommodated and sent at a timing at which the respective subscriber information can be taken in, and the corresponding subscriber information signal is taken in. The timing signal corresponding to the subscriber circuit package having the package number 1 is replaced by the spare subscriber. When switching to supply to the circuit package,
In the spare subscriber circuit package, the subscriber information signal corresponding to the subscriber circuit package having the first package number is fetched, and switching from the first subscriber circuit package to the spare subscriber circuit package becomes possible.

With the above operation, the control from the host device allows
The subscriber accommodated in the subscriber circuit package 9 having the first package number can be accommodated in a normal standby subscriber circuit package 10 in a logically instantaneous manner.

[0019]

According to the present invention, when a failure occurs in the subscriber's circuit package of the digital exchange, the switching to the spare subscriber's circuit package can be performed without the manual operation of a maintenance person. Even if there is a subscriber on a call, the accommodation can be changed logically and instantaneously from the failed subscriber package to the spare subscriber package under the control of the higher-level device, and the subscriber accommodated in the failed subscriber circuit package can be changed. Quick response is possible.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a standby subscriber circuit package switching control method of the present invention.

FIG. 2 is a diagram showing a highway failure occurrence data format.

FIG. 3 is a time chart diagram of a highway and a timing signal.

FIG. 4 is a configuration diagram of a conventional digital exchange.

FIG. 5 is an exchange system diagram of a remote control system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Upper apparatus, 2 ... Subscriber circuit apparatus, 3 ... Fault occurrence data insertion circuit, 4 ... Fault occurrence data extraction circuit,
5 ... S / P conversion circuit, 6 ... Timing signal creation circuit,
7: subscriber information signal switching circuit, 8: communication line multi-connection circuit, 9: subscriber circuit package, 10 ...
Spare subscriber circuit package, 11 ... Highway, 12
... timing signal sent to subscriber circuit package, 13 ...
Timing signal to be sent to the spare subscriber circuit package, 14
... The communication line of the subscriber's circuit package, 15 ... the communication line of the spare subscriber's circuit package.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasuto Yuda 216 Totsuka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture F-term in the Information and Communication Division, Hitachi, Ltd. 5K014 AA01 EA01 FA01 FA02 FA11 HA01 5K019 AA02 BA05 CA05 CC02 CC05 EA28 5K030 GA01 GA12 HA01 HB07 HC03 JA08 JL03 MA05 MB01 MD02 5K050 DD21 EE30 HH03

Claims (2)

[Claims] 1. A subscriber information signal comprising a voice signal and a subscriber control signal and a clock are transmitted and received between a higher-level device and a subscriber circuit device via a highway, and each subscriber circuit package individually corresponds. The subscriber circuit is controlled from the higher-level device by taking in the subscriber information signal from the highway, and in a digital exchange in which a spare package is installed in the subscriber circuit package, failure information when a failure occurs in the subscriber circuit package is obtained. A fault data insertion circuit that converts fault data into data and inserts it on the highway is provided in the host device, a fault data extraction circuit that extracts fault data from the highway, and a subscriber information signal corresponding to the faulty subscriber circuit package from the highway. Subscriber information signal switching circuit, faulty subscriber circuit, which is switched and taken into the spare subscriber circuit package A multi-connection circuit is provided in the subscriber circuit device for performing multi-connection between the communication line containing the package and the communication line containing the spare subscriber circuit package. Based on the fault occurrence data sent via the GW, the subscriber information signal corresponding to the faulty subscriber circuit package is switched to the spare subscriber circuit package and the timing is switched by the subscriber information signal switching circuit, and at the same time, the fault subscription is performed. The multi-connection of the communication line between the subscriber circuit accommodated in the subscriber circuit package and the subscriber terminal and the communication line of the subscriber circuit accommodated in the standby subscriber circuit package is performed by the communication line multi-connection circuit. Even if there is a subscriber who is talking on the subscriber in the failed subscriber's circuit package under the control of the higher-level equipment, a normal standby subscriber's circuit Subscriber circuit package switching control method, characterized in that f logical instantaneous accommodating changes can be. 2. A remote control type digital exchange in which a subscriber's circuit is installed and controlled in a separate station away from the station where the host device is installed, via a transmission device between the subscriber's circuit device and the host device. In the above, the subscriber accommodated in the faulty subscriber circuit package installed in another station can be quickly changed to the normal spare subscriber circuit package by the subscriber circuit switching control method by remote control from the host device. 2. The remote installation subscriber circuit switching control method according to claim 1, wherein: