JPS59101995A - Subscriber line switching device - Google Patents

Abstract

PURPOSE:To execute an accommodation change or a number change in conformity with convenience of a terminal equipment side by setting in advance an intraoffice work as prescribed, and sending out a switching signal from a master station side. CONSTITUTION:In a switchboard 3, switching to a new containing position (b) from an old containing position (a) is executed. Subsequently, in a distributing board 2, a part between an H1 terminal and a V1 terminal, and a part between an H2 terminal and a V2 terminal are cut. Also, the H1 and H2 terminals and new circuits A1, B1 are connected to a plug contact 21, respectively. Also, between the distributing board 2 and a switching device 8, V1 and a terminal (i), v2 and a terminal (h), the H1 side of the contact 21 and a terminal (g), the H2 side and a terminal (f), the A1 side and a terminal (d), the B1 side and a terminal (b), and a contact (k) which connects a control line C and C1, and a terminal (a) are connected, respectively. In this state, a switching signal detecting circuit 82 is operated by a switching signal from a test board 6, and contacts S2, S3 of an S relay are switched. In this way, an accommodation change or a number change can be executed in conformity with convenience of a terminal equipment side.

Description

DETAILED DESCRIPTION OF THE INVENTION In an unmanned station, when the model of a terminal (telephone, etc.) is changed, the line accommodation position of the terminal in an exchange can be changed by remote control from a master station. The present invention relates to a subscriber line switching device suitable for use when switching from an old location to a new location.

Generally, when changing a subscriber's telephone from a rotary dial telephone to a push-button dial telephone, the telephone office must perform internal work to translate the subscriber's accommodation location from the subscriber number (NG (number group)). Regarding this, it is necessary to carry out work to change the connection of the accommodation terminal position t from the old position to the new position (this is called accommodation change). Also, when changing the telephone number of a subscriber's telephone (this is called number change), the station must reconnect the housing position corresponding to the subscriber number as part of the number change work on the station side. .

FIG. 1 is a block diagram for explaining the conventional switching of accommodation positions on the telephone exchange side during such accommodation change (or number change work). In the figure, 1 is an old terminal that has been used up until then, IA is a new terminal that is to be used, 2 is a distribution board, and 3 is a switch.

Here, it is assumed that the distribution board 2 and the exchange 3 belong to an unmanned station, so the exchange 3 is further connected to the master station. When replacing the accommodation, the terminal side will need to perform work (in-house construction) to replace terminal 1 with IA, and the unmanned station side will replace the old accommodation position (A, B) in exchange 3.
It is necessary to switch over the telephone line from C to the new storage location ■, and construction work on the track side is also required.

For this reason, conventionally, in order to minimize the time during which calls were unavailable on the terminal side, it was necessary to carry out on-site construction and in-office construction at the same time, and to complete the accommodation change within a short period of time. It was necessary to coordinate schedules for station staff to go to the unmanned station and work there, and such adjustments were time-consuming, making it impossible to carry out accommodation changes efficiently. Similarly, when it comes to number change work, subscribers have to go to an unmanned station and carry out the work inside the station on a date and time requested by the subscriber, so there is a similar drawback.

The present invention has been made in order to overcome the drawbacks of the prior art, and therefore, an object of the present invention is to enable the subscriber to set up his/her parents at the date and time desired by the subscriber, as long as the internal work is completed and set in advance. It is an object of the present invention to provide a subscriber line switching device capable of executing accommodation switching or number change by sending a switching signal from the station side.

In order to achieve the above object, a subscriber line switching device according to the present invention is a subscriber line switching device used when switching a line accommodation position from an old position to a new position in an exchange accommodating a terminal. Therefore, upon the above switching,
He disconnected the old line from the terminal line to the old storage location of the exchange and connected the new line through the same open contact between the terminal and the new storage location. The first route taken out from the terminal, the second E route taken out from the terminal side of the contact, the 3rd track taken out from the new accommodation position side of the contact, and each of the old and new accommodation positions, f/ of @4 connected to each other and taken out from the connection point
9. and first and second detection circuits that respectively detect the post signal and switching signal sent from the exchange side via the third line, The first line and the second line are normally connected, and when the first detection circuit detects an incoming signal No. 4, the second line is disconnected from the first line. and is connected to a third line, and self-maintains the connection between the second line and the third line using a specific signal sent from the line #I4 along with the incoming signal No. 4, The self-holding is released by canceling the specific signal, and when the switching signal is detected by the second detection circuit, the second line and the third line are connected and held. The present invention is characterized in that it includes means for connecting and disconnecting each of the input terminals.

The present invention will now be described in detail with reference to the drawings.

FIG. 2 is a circuit diagram showing one embodiment of the present invention.

In the figure, 1. The IA is a terminal and is located at home.

2 is a distribution board, 3 is an exchange, 4 is a trunk for testing purposes, and 8 is a subscriber line switching device according to the present invention, all of which are installed in an unmanned station. 5 is an output trunk for testing, and 6 is a test stand, which are installed in the master station. 7 is a relay line. In addition, in subscriber line switching equipment N8, 81
is an incoming signal detection circuit, 82 is a switching signal detection circuit, ti to i3 are contact points of T relay, 52 ps3 is S
The relay contacts DI and D2 are each diodes.

In addition, in the distribution board 2, 21 is the side of the exchange 3 and the terminal device 1.
It is a plug contact that disconnects the side of the

Next, the work process and circuit operation will be explained. After completing the jumper switching work from the housing position ■ to the new housing position ■ in the switchboard 3, on the wiring board 2, connect the terminals between the H1@ terminal and the Vl terminal, and between the H2Rt terminal and the V2GJ terminal as shown by the X marks. disconnect. Furthermore, connect the top and bottom of the left side of the plug contact 21 to the HI P H2 terminal, and connect the top and bottom of the right side to the fold line A1.
t Bl respectively.

Furthermore, between the distribution board 2 and the switching device 8, as shown in the figure, <AI
side and terminal 2 (terminal 2 and E are multi-connected), same < Bl side and terminal 0 (terminal port and C are multi-connected), and the contact connecting control wires C and C1. and terminal A, are connected respectively. Further, within the switching device 8, the terminal port and the terminal port are also connected.

With the above steps, the setup for switching the accommodation position in the exchange 3 has been completed, and by sending out a switching signal from the test stand 6, switching can be performed at any time convenient for the subscriber. Further, there is no problem in making a call using the terminal 1 not only after the switching is performed but also before the switching is performed.

This will be explained below based on circuit operation.

First, when transmitting information about the circuit operation before execution of switching from the terminal device 1, the transmitter must transmit from the old accommodation position 0. The circuit is as follows: H1 → upper left of plug contact 21 → terminal t → t2 → S2 → terminal s → vl-+A, and lower left of H2 plug contact 21 → to terminal → t3 → s3 → terminal t → ■2 → B. , the terminal l can make a call from the old accommodation position ■.

On the other hand, since the jumper connection change has been completed in the exchange 3, the incoming call to the terminal 1 is made via the new accommodation position (2). In other words, in this case, the new accommodation position is captured from the master station via the test wire, and then a negative potential of -48V is received on one communication line (B1 in this case) by the power R operation on the test stand 6 etc. A signal is sent. Then, the following circuit is created: BL → bottom right of plug contact 21 → terminal RO → terminal N → diode D1 → incoming signal detection circuit 81 → T relay → t1 → earth E, the T relay operates, and its contacts 11 to
t3 is switched to a position opposite to that shown in the figure.

On the other hand, when a call is received, the ground potential is sent to the control line cl, so C1 → terminal I → t 1-* 'l' circuit
T-relay is self-maintaining.

As a result, work A → top right of plug contact 21 → terminal 2 → t2 → terminal t →
Upper left of plug contact 21 → H1 circuit, B1 → lower right of plug contact 21 → terminal opening → t3 → to terminal → plug contact 2
A call can be received to the terminal 1 through the circuit from the bottom left of 1 to H2.

When the call ends, the ground potential sent to the control HC1 is removed, so the T relay is restored and the contacts tl to t3 return to the positions shown in the figure.

From the above, it can be seen that the terminal 1 can make and receive calls before the switching is performed.

Next, regarding the execution of switching, at the time of switching, a positive potential signal of +50 volts is sent from the test stand 6 via the test output trunk 5 to one call 1M (Bl in this case) as a switching signal. Then, the switching signal detection circuit 82 is operated by the circuit of Bl→lower right of the plug contact 21→terminal 4→terminal N→diode D2→switching signal detection circuit 82, and the S relay is operated. The contacts s2 p s3 are then switched to positions opposite to those shown. For this reason, A1 → upper right of plug contact 21 → terminal 2 → terminal port → S2 → t2 → terminal G → upper left of plug contact 21 → H
1 and B1 → bottom right of plug contact 21 → terminal RO → terminal C →
Through the circuit S3→t3→to the terminal→lower left of the plug contact 21→H2, the terminal device 1 can thereafter make and receive calls via the new housing position O. Note that the S relay is a mechanical latch type relay, and once activated, it maintains its operating state and will not recover unless a release signal is sent next.

Furthermore, when a call is received, as mentioned earlier, the incoming signal detection circuit 81 operates, the T'l relay operates, and the contacts t1-t
3 is switched to the opposite position from the one shown, but terminal 1 and terminal 2 are
Since terminals C and 4 are connected in multiple ways, there is no change in the incoming circuit of terminal 1.

After executing the switching Once the switching is completed as described above, a station employee selects a convenient day from the master station side, goes to the unmanned station, and connects plug contact 2.
By pulling out the plug (not shown) in 1, the contacts 21 are directly connected. Then, the subscriber line switching device 8 is removed by removing the wiring at terminals I to N.

FIG. 3 is a circuit diagram showing another embodiment of the present invention, in which, in the case of a number change, a directory assistance service (called AIS service, as it is a service that notifies people of the new number) is provided to people who call the old number. An example that can be implemented is shown.

In the figure, an 8-person relay and its contact Sa are added to the subscriber line switching device 8, and a 5AIS addition device 9 is added.
and the NG7 frame 10 as shown in the figure.

Now, if the subscriber line switching device 8 receives a switching signal, the switching signal detection circuit 82 detects this, and the S relay operates to close the contact so. Therefore, additional relay 8A
operates, and contact Sa closes. Therefore, A in the additional device 9
IS relay operates, contact AIS, NG frame 10
Switch from the housing position side to the AIS side. Therefore, from now on, anyone who calls the old number will be connected to the [telephone number] terminal in the NG frame IO,
A directory assistance service can be received from a directory assistance trunk (not shown) via the IS terminal.

As explained above, due to changes in terminal models, number changes, etc., work to change the call line accommodation location in the exchange, etc.
Conventionally, in order to minimize the unusable time of the terminal, it was necessary to complete the work within the station and the work on the terminal at the same time, but the subscriber line switching device according to the present invention By using , it is possible to carry out internal work in the station in advance, and it is possible to carry out switching at any time according to the convenience of the terminal by sending a switching signal from the remote master station. It has the advantage that construction work can be carried out efficiently. Further, since switching can be easily performed according to the convenience of one customer (terminal) while minimizing the time during which calls are unavailable, there is an advantage that this leads to improved customer service.

[Brief explanation of drawings]

FIG. 1 is a block diagram for explaining the switching of accommodation position n on the exchange side during conventional accommodation, FIG. 2 is a circuit diagram showing an embodiment of the present invention, and FIG. FIG. 3 is a circuit diagram showing an example. Code explanation 1.1A...terminal, 2...distribution board,
21... Plug contact, 3... Phase exchanger, 4...
...Person trunk for testing, 5.Exit trunk for testing, 6.Curved test stand, 7.Relay line, 8.
... Subscriber line switching device, 81 ... Incoming signal detection circuit, 82 ... Song switching signal detection circuit, 9 ...
...Additional device, 1o...NG7 claim agent Patent attorney Kiyoshi Matsuzaki

Claims (1)

[Claims] 1) A subscriber line switching device used when switching the line accommodating position from the old position to a new position in an exchange accommodating a terminal, which is used to switch the line accommodating position from the terminal to the old accommodating position of the exchange during the switching. After disconnecting the old line leading to and connecting the folded line between the terminal and the new housing position via an open contact, connect the first line taken out from the old housing position side of the disconnected old line and the contact point. The second one taken out from the terminal side of
, the third line taken out from the new accommodation position side of the contact point, and the fourth line taken out from the connection point by connecting the control lines at both the old and new accommodation positions to each other, respectively. In addition to having respective input terminals, it also has first and second detection circuits that respectively detect incoming signals and switching signals sent from the exchange side via the third line, and is normally connected to the first line. When a second line is connected to the first line and an incoming signal is detected by the first detection circuit, the second line is disconnected from the first line and connected to the third line. The connection between the second line and the third line is self-maintained using a specific signal that is connected and sent from the fourth line along with the incoming signal, and by canceling the specific signal. Let go of self-retention,
Further, when a switching signal is detected by the second detection circuit, the respective input terminals are connected or disconnected so as to connect and maintain the connection between the second line and the third line. A subscriber line switching device characterized by comprising means for