JPH04373395A - Removing method for central office equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for removing obsolete communication line equipment installed mainly in telephone offices. In particular, the present invention relates to a method for removing an old arrester rack installed in a telephone office and replacing it with a new terminal board rack.

0002

2. Description of the Related Art FIG. 3 shows a diagram of a wiring system installed in a telephone office where subscriber cables are accommodated within the office and housed in internal equipment. Further, FIG. 4 shows a wiring system diagram for explaining the case where old equipment of a conventional telephone office is removed.

First, the wiring system will be explained. Telephone office 5
An in-office device 1 installed in the office is terminated with an in-office cable 2 to a terminal plate of an in-office terminal frame 4 of a distribution board 3. On the other hand, the line cable 12 of the subscriber line, which has been laid to the subscriber premises equipment 13, is housed in the telephone office and terminated to the line side terminal 10 of the arrester rack 8 in the office. In this arrester rack 8, it is led to the local terminal 9 via a protection element 11. The station-side terminal 9 of this arrester frame 8 and the line-side terminal frame 5 of the distribution board 3 are connected by an intra-station cable 7. Further, the line side terminal frame 5 and the station side terminal frame 4 of the distribution board 3 are connected by jumper wires 6.

A conventional method for removing the arrester frame 8, which is an old-fashioned device in such a wiring system, will be explained.

First, as shown in FIG. 4, a T-shaped connection 38 is made at the part where the line cable 12 of the telephone office 50 stands up, and a new switchboard 33 and in-office equipment 31 are installed.
A jumper wire 3 is connected between each device and between the in-office cables 32 and 37, the in-office termination rack 34 of the distribution board 33, and the line-side termination rack 55.
6, and after the construction was completed, the T-shaped connection 38 was cut at the 39 point marked with an X, and all the previously used equipment was removed.

[0006]

[Problem to be Solved by the Invention] This conventional removal method requires space to install all new equipment, and also requires removal of all equipment, so a large space is required to remove old equipment. There was a problem that required In addition, there were problems such as a long construction period and an increase in construction costs.

[0007] The present invention solves the above-mentioned problems.
The purpose is to provide a removal method that allows old equipment to be removed within a narrow space.

[0008]

[Means for Solving the Problems] The present invention provides new cable cores for the excess lengths of cable cores connected to the input and output sides of communication line equipment installed in a telephone office and to be removed. Make a T-shaped connection and connect the other end of this new cable core to the input and output sides of the new device to be replaced,
Cut the input/output cables on the side of the communication line equipment to be removed of the T-connected T-connection, remove the communication line equipment, and extend the new equipment to the position where the communication line equipment was removed. It is characterized by being moved and fixedly placed.

[0009]

[Operation] Connect the excess length of the cable that has been drawn into the device to be removed and the new cable core on the input/output side in a T-shape. A new device to which this new cable core wire is connected is temporarily installed, and the device to be temporarily removed and the new device are configured in duplicate. Furthermore, the T-connected cable cores on the side of the equipment to be removed are cut and the equipment is removed. Move and secure the new device to the location where this device was removed.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings.

FIG. 1 is a wiring system diagram illustrating the method of removing old equipment according to an embodiment of the present invention, and is a wiring system diagram including a new terminal board rack installed at a telephone office, and FIG. It is a conceptual diagram explaining the removal method based on.

The in-office equipment 1 installed in the telephone office 50 is terminated by an in-office cable 2 to a terminal plate of an in-office terminal frame 4 of a distribution board 3. On the other hand, the line cable 12 of the subscriber line, which has been laid to the subscriber premises equipment 13, is housed in the telephone office and terminated to the line side terminal 10 of the arrester rack 8 in the office. In this arrester rack 8, it is led to the local terminal 9 via a protection element 11. The station-side terminal 9 of this arrester frame 8 and the line-side terminal frame 5 of the distribution board 3 are connected by an intra-station cable 7. Further, the line side terminal frame 5 and the station side terminal frame 4 of the distribution board 3 are connected by jumper wires 6.

In this embodiment, in such a wiring system,
This will be explained using an example in which the arrester rack 8 is removed and a new terminal board rack 14 is installed.

Next, the removal procedure according to this embodiment will be explained.

The intra-office cable 7 terminated at the inner-office terminal 9 of the arrester rack 8, the excess core wire of the line cable 12 terminated between the line-side terminals 10, and the newly installed intra-office cables 15, 16. T-connect the core wires at points 17 and 19. The other end core wires of the intra-office cables 15 and 16 are terminated at the terminal plate of the newly installed terminal plate rack 14. This terminal board rack 14
has a movable structure, and the cable lengths for the intra-office cables 15 and 16 are ensured so that they can be moved to that position after the arrester rack 8 is removed. After the T-shaped connection, the arrester rack 8
and the terminal board rack 14 have a double connection configuration. After the T-shaped connection work is completed, the T-shaped connections 17 and 19 are marked with x marks 18 and 20.
Cut at the position. After this disconnection, the arrester rack 8 is separated from the communication line, and the arrester rack 8 can be removed. After removing the arrester rack 8, the terminal board rack 14 is moved to the installation position of the arrester rack 8 and fixed.

[0016]

[Effects of the Invention] As explained above, the present invention utilizes the extra length of the removed device to remove the device as a T-connected double configuration connection system, and moves and fixes the new device to the removed position. Therefore, it is possible to replace the old device with the new device even in a narrow space, and the space can be used effectively. Furthermore, since there is no need to install extra equipment, it is possible to shorten the construction period and save money on construction costs.

[Brief explanation of the drawing]

FIG. 1 is a wiring system diagram illustrating a removal method according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram showing a physical image of the removal method of the embodiment.

FIG. 3 is a wiring system diagram of the current communication line.

FIG. 4 is a wiring system diagram illustrating a method for removing a conventional device.

[Explanation of symbols]

1, 31 In-office equipment 2, 7, 15, 16, 32, 37 In-office cable 3,
33 Distribution board 4, 34 Station side terminal rack 5, 35 Line side terminal frame 8 Arrester rack 9 Station side terminal 10 Line side terminal 12 Line cable 13 Subscriber premises equipment 14 Terminal board rack

Claims (1)

[Claims] [Claim 1] New cable cores are connected in a T-shape to the excess lengths of the cable cores connected to the input and output sides of the communication line system equipment installed in the telephone office to be removed, and Connect the other end of the cable core wire to the input and output sides of the new device to be replaced, and cut the input/output core wire on the side of the communication line system device to be removed from the T-shaped connection part that was connected in the T-shape above. A method for removing telephone office equipment, comprising removing communication line equipment, and moving and fixing the new equipment to the position from which the communication line equipment was removed.