SU1095436A1 - Device for switching telegraph channels - Google Patents

Abstract

A DEVICE FOR COMMUNICATION OF TELEGRAPHIC CHANNELS, comprising a series-connected call fixing and pick-up unit and a subscriber search unit, as well as a register connected to the register search unit, the first input of which is connected to the first output of the transition unit, characterized in that. in order to reduce the switching time, a transit search block and a connection block are inserted in it, the second output of the call-fixing block and the tap is connected to the second input of the register-seeking block, the output of which is connected to the second input of the subscriber-seek block, the third input and output of which are connected respectively to the output and the first input of the junction block, the second input of which is connected to the first output of the register, the second output of which is connected to the input of the transit search block connected to the transition unit, which It is connected with the block of the subscriber's claim (L m. with O1 4 CO O5

Description

The invention relates to an automatic telegraph communication and can be applied in the organization of an automatic telegraph circuit switching channels.

A device for switching telegraph channels, containing multi-stage search blocks 1, is known.

A disadvantage of the known device lies in the low speed of establishing a connection, due to the multistage construction of search blocks.

The closest to that proposed is a device for switching telegraph channels, comprising a series connected call fixing and pick-up unit and a subscriber search unit, as well as a register connected to the register search unit, the first input of which is connected to the first output transition unit. The disadvantage of this device is large switching time due to the multistage construction of search blocks.

The purpose of the invention is to reduce the switching time.

The goal is achieved by the fact that a transit search unit is entered into a device for switching telegraph channels containing a series of connected call and pick-up units and a subscriber search unit, as well as a register connected to the register search unit, the first input of which is connected to the first output of the transition unit. and a connection unit, the second output of the call-fixing unit and the release being connected to the second input of the register search block, the output of which is connected to the second input of the subscriber searching block, t The input and output of which are connected respectively to the output and to the first input of the connection unit, the second input of which is connected to the first output of the register, the second output of which is connected to the input of the transit search block connected to the transition block which is connected to the subscriber search block.

FIG. 1 shows a functional electrical circuit of the device; in fig. 2 is an electrical circuit diagram of the connection unit.

The device contains a block 1 call and call back, block 2 subscriber search, transitional block 3, block 4 connections, block 5 register search, register b and block 7 transit search, while block 4 connection contains the first relay 8 with contacts 9, the second a relay 10 with contacts 11, a third relay 12 with contacts 13 and 14, and a fourth relay 15 with contacts 16.

The device works as follows.

After the register 6 receives the called subscriber number, a sample circuit is created at the junction block 4, where relay 8 is activated.

The contacts 9 of this relay closes the operation circuit of the selectable magnets of the subscriber’s search unit 2 corresponding to the horizontal in which the occupied connection unit 4 is connected, switching takes place in the subscriber search unit 2, and the relay 10 switches on the connection establishment wire from its output to the right contact, relay 12 is activated and, through its contacts 13, supplies

"Minus to hold the connection in block 2 of the subscriber search. In the event of a disconnection, the current in the winding of the relay 10 changes and its measles passes to the left contact. At the time of release of the relay 12, the relay 15 is activated and with its contacts 16 it breaks the path holding circuit in the subscriber search unit 2. After releasing, relay 12 releases relay 15 and connection unit 4 returns to its initial state.

The process of establishing connections proceeds as follows. Outgoing connection.

The call from the subscriber is recorded in block 1 call hold and pick up, to which register 6 is connected via register search block 5. Register 6 pauses subscriber search block 2 between call hold and call block 1 and transfer block 3 and disconnects.

Connection establishment path: block 1 call take-over and call release - subscriber search block 2 - transition block 3.

Inbound connection.

With an incoming connection, the call comes in from the channel and is perceived in transitional unit 3, to which register 6 is connected via register search block 5 r. Register 6 performs the connection of wires in subscriber search block 2 between call hold unit 1 and pick-up and transition unit 3.

Connection establishment path: transition unit 3 - subscriber search unit 2 - call hold and pick up unit 1.

Local connection.

The call from the subscriber is recorded in block 1, call-taking and call, to which register 6 is connected via block 5 of the register search.

Register 6 with the help of block 4 of the connection produces a connection between the lines of the calling and called subscribers in block 2 of the subscriber search.

Connection establishment path: block 1 call hold and pick up - block 2 subscriber search - block 1 call hold and pick up.

Transit connection.

5 If several (at least 2) peripheral switching stations are included in this station, it is necessary to make a transit connection.

The call from the peripheral switching stations is recorded in transition unit 3, to which register 6 is connected via register search unit 5.

Register 6 performs a wire wiring in transit search block 7 between transition unit 3, which received the call, and transition unit 3, of the required direction.

Connection establishment path: transition unit 3 - transit search unit 7 - transition unit 3.

The technical and economic effect of the device is to reduce the amount of switching equipment in the telegraph switching stations by reducing the number of multi-axis connectors, as well as to increase the speed and reliability of the connection establishment process.

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Claims (1)

DEVICE FOR COMMUTATION OF TELEGRAPH CHANNELS, comprising sequentially connected call and disconnect fixation unit and subscriber search unit, as well as a register connected to the register search unit, the first input of which is connected to the first output of the transition unit, characterized in that. in order to reduce the switching time, a transit search block and a connection block are introduced into it, and the second output of the call and disconnect block is connected to the second input of the register search block, the output of which is connected to the second input of the subscription search block, the third input and output of which are connected respectively to output and the first input of the connection unit, a second input coupled to the first register output, a second output coupled to an input unit _with a transit distortion Nia connected to the transition block Ko cos $ tory dinen with block subscriber search. FIG. 1 SU .... 1095436>