SU1184109A1 - Group subscriber telephone set - Google Patents

Abstract

GROUP SUBSCRIBER TELEPHONE INSTALLATION, containing M subscriber sets, dedicated subscriber kit, generator block and register, with the buzzer inputs of M subscriber sets and dedicated subscriber kit combined and connected to the output of the generator block, the first input of the register is connected to informational output of 1 M subscriber set. and a set of the allocated subscriber, characterized in that, in order to increase the number of simultaneous connections of subscribers, a switching field is introduced, the call identifier , a state test block, a code converter, a clock generator and a power block, the conversational outputs / L subscriber sets and the set of the allocated subscriber are connected to the corresponding switching pins of the switching field, the control input of which is connected to the first output of the code converter, the second and third outputs code converter are connected respectively with the first and second inputs of M subscriber sets and a set of a dedicated subscriber, while the outputs L of subscriber sets and co The set of the assigned subscriber is connected to the input of the call identifier, the clock i input of which is connected to the clock input of the time block and ate the clock pulse generator output, the first inputs of the code converter and the state sample block are connected to the register output, the second input of which is connected to the second input of the code converter and the first the output of the call identifier, with the second output of the call identifier connected to the first input of the time delay block, the output of which is connected to the combined third inputs L bo00 by Personal kits and kit you. the second subscriber input, the third input of the code converter, and the output of the state sample block are connected to the combined sample inputs of the M subscriber sets and the set of the selected subscriber, the sample outputs of which are connected to the second state sample block input.

Description

The invention relates to telephone communications, and specifically to telephone subscriber installations with the collective use of the subscriber-line of the reference PBX.

The purpose of the invention is to increase the number of simultaneous connections of subscribers.

: The drawing shows a structural electrical circuit of a group telephone subscriber station.

The group subscriber telephone set contains subscriber sets 1, ..., 1, set 2 of the allocated subscriber, generator block 3, register 4, switching field 5, call identifier .6, state test block 7, code converter 8, clock generator 9 and block 10 time delay

The device works as follows.

When a call is received from subscriber sets 1, ..., 1, the call identifier 6, under the influence of clock pulses from the output of the generator 9, arriving at the clock input of the call identifier 6, selects one of the calling subscriber calls 1, .., 1. Information about the number of the selected subscriber set in binary code from the first output of the call identifier 6 arrives at the second input of the code converter 8, which converts this code to code 1 of n, and the third subscriber is output from the third output of the code converter 8. As a result, the subscriber set of the calling subscriber receives a buzzer alert for dialing, the numbers from the output of the 3 generator sets.

From the call identifier 6 to the second input of register 4, in binary code, the line number of the calling subscriber set t, ..., 1, as a result of which the first input of register 4 is connected to the information output of the subscriber set of the calling subscriber. At the same time, from the second output of the call determiner 6, a signal is applied to the first input of the time delay unit 10, ensuring the start of the counting of the specified connection establishment time. Unit 10 time delay works under the influence of clock pulses from the output of the generator 9.

092

The dialed number from the information output of subscriber sets 1, ..., 1 goes to the first input of register 4 and is fixed in it. From the output of register 4, the received information enters the state test block 7. If the called line is free, then from the output of the sample block 7, through the block 10, the time is sent to the third input of the calling subscriber set, which removes the call signal from the subscriber set to the call identifier 6. At the same time, from the output of the register 4, the information in the binary code about the number of the called subscriber set arrives at the first input of the code converter 8. By a signal from the output of the condition sample block 7 coming to the third input of the code converter 8, the numbers of the calling and calling subscriber sets are converted to numbers 1 from p, corresponding to the switching elements of the switching field 5. By the signal from the first code converter 8, a connection is made, in the switching field 5.

From the output of block 7 of the state test to the called subscriber set 1, ..., 1, an indication of the incoming communication is given. At the same time, from the block 3 generators, to the buzzer input, the calling subscriber set sends the ring back tone to the buzzer input, and the ring signal to the buzzer input of the called subscriber set.

After the request signal is removed from the calling subscriber set, the call identifier 6 is released and ready to find a new call.

Hang up in a group telephone station one-way. O is carried out directly by the switching field.

In case of unproductive occupation of the equipment of a group subscriber telephone installation with. subscriber’s side (without dialing a number from the output of the time delay block 10 to the calling subscriber set l, ..., 1, the third input is sent to block the call signal and the other subscriber set.

In this case, the call identifier 6 proceeds to find the next call. When connecting a calling subscriber set 1,. ,., one

to set 2 of the selected subscriber, he gets access to the reference PBX, which includes a group subscriber telephone set.

Claims (1)

A GROUP SUBSCRIBER TELEPHONE INSTALLATION, comprising / A subscriber sets, a dedicated subscriber set, a generator block and a register, the buzzer inputs / A of the subscriber sets and a dedicated subscriber set are combined and connected to the output of the generator block, the first input of the register is connected to the information outputs of the Subscriber kits and kits for a dedicated subscriber, due to the fact that, in order to increase the number of simultaneous connections of subscribers, a switching field, call identifier, b a state sample lock, a code converter, a clock generator and a time delay unit, the conversational outputs of the D subscriber sets and the dedicated subscriber set are connected to the corresponding conversational outputs of the switching field, the control input of which is connected to the first output of the code converter, the second and third outputs of the code converter are connected respectively to the first and second inputs of M subscriber sets and a dedicated subscriber set, while the outputs of the Subscription sets and a set you The subscriber is connected to the input of the call identifier, the clock input of which is connected to the clock input of the time delay unit and the output of the clock generator, the first inputs of the code converter and the state sample unit are connected to the register output, the second input of which is connected to the second input of the code converter and the first output of the call identifier, moreover, the second output of the call identifier is connected to the first input of the time delay unit, the output of which is connected to the combined third inputs / A of the subscriber sets and set of the allocated subscriber, and the second input of the time delay unit, the third input of the code converter and the output of the status sample block are connected to the combined i inputs of the AD sample of the subscriber sets and the set of the allocated subscriber, the sample outputs of which are connected to the second input of the status sample block. , _a SU,., 1184109