JPS6320945A - Subscriber circuit exchange system - Google Patents

Abstract

PURPOSE:To prevent service for a call during talking from being intermitted by connecting a line to a standby package tentatively and restoring the original connection after the replacement of a faulty package is confirmed if a fault takes place in an active subscriber circuit and the maintenance personnel replaces the subscriber circuit package accommodating its circuit. CONSTITUTION:If a fault takes place in subscriber circuits 200-295, 300-307, its LED is lighted and the maintenance personnel finds out the faulty subscriber circuit and package. For example, if the subscriber circuit 200 is faulty, the maintenance personnel inputs a subscriber circuit switching start command from a TTY. A central control unit 17 applies control command connecting the subscriber line accommodated in the subscriber circuit package 1 to a standby subscriber circuit package 13 for a subscriber circuit controller 15 and sets the subscriber circuits 301-307 into the same state as the subscriber circuits 201-207, controls the switching circuit 14 to connect the circuits to suscriber telephone sets 100-107. Since the standby subscriber circuit 300 is in the initial state, tha talking of the subscribers is not intermitted and the service for the subscriber telephone set 100 is restarted.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a maintenance/replacement system for a subscriber circuit package in which subscriber circuits of a plurality of subscribers are accommodated in one package.

2. Description of the Related Art Conventionally, a plurality of subscriber circuits of a telephone exchange are mounted in seven packages. For example, subscriber circuits for one subscriber are mounted on seven packages.

Therefore, when seven subscriber circuits fail, maintenance personnel replace them with spare, good subscriber circuit packages.

Problems to be Solved by the Invention However, when replacing the subscriber circuit package with a spare package, if another subscriber housed in the replaced subscriber circuit package is in the middle of a call, the call will be disconnected. there were.

Furthermore, if the system waits until the call ends, the telephone exchange service for the subscriber accommodated in the faulty subscriber circuit will be interrupted during that time.

For this reason, maintenance personnel have to confirm that other subscribers accommodated in the same subscriber circuit package are not busy before replacing the package.

The present invention has been made in view of the above-mentioned conventional situation,
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a new subscriber circuit switching system which makes it possible to overcome the above-mentioned drawbacks inherent in the prior art.

Means for Solving the Problems In order to achieve the above object, the subscriber circuit switching system according to the present invention includes seven spare subscriber circuit packages provided for a plurality of subscriber circuit packages; The subscriber circuit includes a switching circuit for connecting subscriber lines to the spare subscriber circuit package, a subscriber circuit control device for controlling the subscriber circuit and the switching circuit, a communication path device, and a central control device.

Embodiment Next, a preferred embodiment of the present invention will be specifically explained with reference to the drawings.

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

In FIG. 1, reference number 100-/9! r is subscriber telephone, koOO~ko9! , 300 to J0 are subscriber circuits, l to /J are subscriber circuit packages each containing t subscriber circuits, 13 is a spare subscriber circuit package, and / is a spare subscriber circuit package. A switching circuit for connecting to a subscriber circuit, is a subscriber circuit control device, 14 a communication path device, and 17 a central control device.

Subscriber circuit 200~ko9! , 300-J07 is equipped with an LED for indicating a fault, which lights up when a fault is detected in the subscriber circuit.

Illumination of this LED allows maintenance personnel to locate faulty subscriber circuits and packages.

Assuming that subscriber circuit -00 has become a failure and the corresponding LED lights up, the maintenance person inputs a subscriber circuit switching start command from a TTY (not shown).

The central control device/ri is for the subscriber circuit control device ljK,
A control instruction is given to connect the subscriber line housed in the subscriber circuit package 1 to the spare subscriber circuit package /3.

According to the above control instruction, the subscriber circuit control device /j controls the subscriber circuit 3 housed in the spare subscriber circuit package 13.
01 to 307 as subscriber circuit 2 of subscriber circuit package l
After setting the same state as 01 to 07, switch circuit/l
to connect subscriber telephones 100-107 to subscriber circuits 300-J07. The spare subscriber circuit 300 is in an initial state because the corresponding subscriber circuit 200 is in failure. (K), when a subscriber is on a call, the call is often interrupted and the subscriber telephone 100
services can also be resumed. The maintainer recently posted Kl!
Replace the subscriber circuit package l in the book with a spare package and confirm that the fault has been recovered.

Next, the maintenance person inputs a subscriber circuit switching restoration command from a TTY (not shown). The central control unit/7 is
A recovery control instruction is given to the subscriber circuit control device 13 to connect the subscriber line connected to the spare subscriber circuit package/JK to the original subscriber circuit package l. The subscriber circuit control device 15 controls the subscriber circuits OO to OO accommodated in the subscriber circuit package according to the above control instructions to the subscriber circuit 300 accommodated in the spare subscriber circuit package 13.
After setting flK in the same manner as ~30, switch circuit /4'
performs restoration control and connects the filling machines 100 to 107 to the subscriber circuits -00 to 207K.

DETAILED DESCRIPTION OF THE INVENTION As described in detail, the present invention provides a telephone in which a plurality of subscriber circuits are housed in a single subscriber circuit package, and the plurality of subscriber circuit packages constitute one subscriber circuit device. In a switching system, a spare subscriber circuit package is provided for one subscriber circuit unit, so that when a failure occurs in the normally used subscriber circuit, the maintenance personnel replaces the subscriber circuit package that accommodates the failed subscriber circuit. When replacing - by connecting the subscriber line to a spare subscriber circuit package which sometimes becomes the present invention, replacing the faulty package and returning the subscriber line to its original readout after confirmation of normal operation; The effect is that the subscriber circuit package can be replaced without interrupting the service of active calls.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the subscriber circuit switching system according to the present invention.

Claims (1)

[Claims] In a telephone exchange in which a plurality of subscriber circuits are housed in one package, and the plurality of subscriber circuit packages constitute one subscriber circuit device, one subscriber circuit package among the plurality of subscriber circuit packages; A subscriber circuit characterized in that the subscriber circuit is provided with a means for making the spare subscriber circuit package temporarily usable when replacing the subscriber circuit package for maintenance of the regularly used subscriber circuit package. Exchange method.