SU1241521A1 - Concentrator for long-distance communication with selective call of subscribers - Google Patents

Abstract

The invention relates to communication technology. Multiple subscribers are simultaneously connected. The device contains n subscriber stations (AP) I, n nodes of a selective call (TID) 2 and a switching unit (BC) 3, consisting of two blocks of call 4. and 5, two elements NOT 6 and 7, two elements AND 8 and 9, key element 10, two reset blocks II and 12, four elements OR 13, 14, 17 and 18 and two elements OR 15 and 16 When calling the subscribers working on AN 1 of the corresponding TID 2, the subscribers working on the other side press the corresponding key on the AP 1. At the same time, one of the combinations of call frequencies that control the work of the AC 3 using the Work and Employment address signals that appear at the corresponding address output and occupy the corresponding output present TID 2. The objective is achieved by introducing into cells BK 3 OR 13, 14 ,, 17 and 18 and OR-NO elements 15 and 16 as well as placing a call blocks 4 and 5 of the elements 1 I. yl. (L

Description

124152

FIELD: engineering.

in communication, in particular to communication systems

selective call subscribers. The purpose of the invention is to provide

simultaneous svn several abo-;

enta about

The drawing shows the electrical structure of the hub for city communications with the selective calling of subscribers.

A hub for long-distance communication with selective calling of subscribers contains n subscriber stations 1-1, ..., 1-n, n selective call nodes 2-1,.,., 2-n, block, com-) 5 mutations 3, the first and second blocks of call 4 and 5-, the first and second elements of HE 6 and 7, the first and second elements of AND 8 and 9, key Element 10, the first and second blocks of reset 1 20

And 12, the first and second elements OR 13 and 14, the first and second elements OR-NOT 15 and 16, the third and fourth elements OR 17 18, the first block of call 4 contains n elements AND 4-i. 25,

..., 4-p, the second block of call 5 contains n elements And 5-1,. . . , 5-p.

A hub for intercity communication with a selective call for abonet works as follows. ,P

When calling a subscriber, for example, on subscriber console 1-1 of the selective call node 2-2, the subscriber, for example, from the subscriber console. 1-n selective call node 2-2, press the call key corresponding to the selected subscriber. In this case, a combination of frequencies corresponding to subscriber 1-1 of node 2-2 is delivered to the communication line. This combination includes a subscriber station 1-1 and subscribers have the opportunity to transmit information to each other.

4.5

50

Since the combination of call frequencies does not match the combinations of frequencies to turn on the switching unit 3, the communication lines are not connected to each other through the key element 10, the subscribers of one side have the opportunity to call each other without interfering with the subscribers of the other party. The call is made according to the described principle. After the end of the conversation, the subscriber 1 node 2-1 presses the Reset button. In this case, a combination of frequencies is applied to the communication line, which is turned off by subscriber 1-1. Connecting and disconnecting subscriber console 1-n y3j7a 2-1

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This is accomplished by a combination of call and reset frequencies.

When calling subscribers on the subscriber stations of the selective call site by 2-ps, subscribers on the other side, press the corresponding key on the subscriber station. In this case, one of the combinations of call frequencies that controls the operation of block 3 with the help of the address signals Work and Zanto, which appear at the corresponding address output and the occupation output of the corresponding selective call node.

If the selective call node is occupied on the opposite side, then at its output there is a signal Zan, which through the second element I 9 acts on the first input of the third element MP. Since its second input is signaled by Operation via the third element OR 17, the signal from the output of the third element And 11 includes a combination of frequencies corresponding to the reset of the electoral call nodes from which the call is being made. Signals The call to node 2-3 does not go in, since the signal Zan it through the element NOT 7 prohibits the operation of a group of elements I.

E (hp signal Zan then on node 2-3 is missing, then the signal Work through one of the elements And the second block of call 5 acts on one of the call inputs of node 2-3 and includes a combination of frequencies corresponding to the called subscriber in node 2-p.

Signals; work with selective call nodes 2-2 and 2-3 through the elements OR 13 and 14 affect the control inputs of the key element 10, which connects the communication lines to each other and the subscribers have the opportunity to transmit information to each other.

The Zan signals do not affect the operation of the hub, since the Signals Work through the AND elements; GSH-NO 15 and 16 prohibit the operation of the And 8 and-9 elements.

At the end of the call, subscribers Call the Reset buttons, and a combination of reset frequencies that pushes the selective call and key nodes to the line of communication.

the element separates the lines of the formula of the invention

A hub for long-distance communication with a selective calling of subscribers, containing on each side of And groups of n subscriber stations connected in parallel to the communication line, and n nodes of the selective call. And, whose output output and occupation output are connected to the first and second inputs the corresponding subscriber stations, the first and second codes of which are connected to the call input and the reset input of the respective selective call nodes, each of which is connected to a communication line, as well as a switching unit containing a key element, the first and second blocks of the reset, the first and second blocks of the call, the first and second cops are NOT, the first and second elements are AND, and the information inputs of the key element are connected to the communication lines on each side, the input of the first element is NOT connected to the occupancy output of the corresponding node selective call one side and the first input of the first element And, the output of which is connected to the first input of the second reset unit, the output of the first element is NOT connected to the input of the first call block, the input of the second element is NOT connected to the output of the occupancy corresponding vuyuschego node selective call the other party and the first input of the second AND element, the output element is coupled to the input of the second

A reset, the output of which is connected to the reset input of the corresponding output of a selective call on one side of the output of the second reset unit of connection J with the reset input of the corresponding selective call of the other side, in order to provide simultaneous communication of several subscribers, in the switching unit JO. the first and second elements OR, the control inputs of which are connected to the corresponding outputs of the nodes of the selective call on each side, the corresponding and the inputs of the first and second elements OR NOT, the outputs of each of which are connected respectively with the second inputs of the first and second elements AND of the first and second blocks; the call of the output of the first and second elements OR are connected to the control inputs of the key element, as well as the third and fourth elements OR, the inputs of each of which are connected respectively to the inputs the first and second elements OR, and the outputs of the third and fourth elements OR are connected respectively to the second inputs of the first and second reset blocks, and the first and second blocks of the call contain by And elements, the first and second inputs which are combined and are the first and second inputs of each of the call blocks, the third inputs of the first call block are connected to the inputs of the fourth element

OR, .a third block inputs

 SoB-a connected to the inputs of the third

 element, outputs of the first and second

20

25

thirty

t

th call blocks connected to inputs

the call block, and the output of the second element-40 call of the corresponding node is beaten and connected to the output of the first call of each party.

Editor T.Porpenova Order 3616/58

Compiled by A. Levitsk. ,

Tehred O. Gortvay Proofreader V. But ha

Circulation 624, Subscription VNISHSh State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

A reset, the output of which is connected to the reset input of the corresponding selective call node of one side, the output of the second reset block J is connected to the reset input of the corresponding selective call node of the other party, characterized in that, in order to provide simultaneous communication of several subscribers, to the switching block JO . the first and second elements OR are introduced, the control inputs of which are connected to the corresponding outputs of the selective call nodes of each party, the corresponding and the inputs of the first and second elements OR NOT, you The odes of each of which are connected respectively with the second inputs of the first and second elements of AND and the first and second call blocks, the output of the first and second elements of OR are connected to the control inputs of the key element, as well as the third and fourth elements of OR, the inputs of each of which are connected - with the inputs of the first and second OR elements, and the outputs of the third and fourth OR elements are connected to the second inputs of the first and second reset blocks, respectively, and the first and second call blocks contain n, And rvye and second inputs which are combined and the first and second inputs of each of the call unit, the third inputs of the first block 35 us call compounds from the fourth input element

OR, and the third inputs of the block you-)

 SoB-a connected to the inputs of the third

 element, outputs of the first and second

25

thirty

t

th call blocks connected to inputs

Claims (1)

Claim A hub for long-distance communication with selective calling of subscribers, containing on each side of And groups of η user panels connected in parallel to the communication line, and η nodes of selective call.a, the address output and occupation output of which are connected to the first and second inputs of the respective user panels , the first and second outputs of which are connected to the call input and the reset input of the respective nodes of the selective call. a, each of which is connected to the communication line, as well as a switching unit containing a key element, the first and second reset blocks, the first and second call blocks, the first and second elegance NOT, the first and second elements AND, with the information inputs of the key element connected to the communication lines on each side, the input of the first element NOT connected to the output of the occupation of the corresponding node selective call one side and the first input of the first element And, the output of which is connected to the first input of the second reset unit, the output of the first element is NOT connected to the input of the first call block, the input of the second. element is NOT connected to the output of the class of the selective call node of the other side and the first input of the second AND element, the output of the element is NOT connected to the input of the second call block, and the output of the second element, And is connected to the output of the first reset unit, the output of which is connected to the reset input of the corresponding selective call node of one side, the output of the second reset unit is connected 5 with the reset input of the corresponding selective call node of the other side, characterized in that, in order to ensure simultaneous communication of few subscribers, to the unit 1 ₀ switching. The first and second OR elements are introduced, the control inputs of which are connected to the corresponding outputs of the selective call nodes of each side, the corresponding inputs of the first and second elements ^ OR NOT, the outputs of each of which are connected respectively to the inputs of the first and second second elements And the first and second call blocks, 20 output of the first and second elements. OR are connected to the control inputs of the key element, as well as the third and fourth OR elements, the inputs of each of which are connected respectively to the inputs of the first and second OR elements, and the outputs of the third and fourth OR elements are connected respectively to the second inputs of the first and second discharge blocks, and the first and second call units ³⁰ comprise η element and first and second inputs of which are combined and the first and second inputs of each of the call unit, the third inputs of the first block soedine35 us call with four entrances th element OR, and the third inputs of the second 'block you-j' call are connected to the inputs of the third ..... 'of the OR element, the outputs of the first and second call blocks are connected to the call inputs 40 of the corresponding selective call node of each side.