SU930738A1 - Programme-controlled automatic exchange - Google Patents

Description

The invention relates to telecommunications and can be used for organizing automatic communication on telephone systems.

(An automatic telephone station with a 1M control program is known, comprising a serially connected switching node, a peripheral communication unit, a central processor, an input-output unit and a memory unit connected to the central processor

However, at the well-known automatic telephone station (PBX) there is no centralized change of programs.

The purpose of the invention is to provide the possibility of centralized program change.

The goal is achieved by the fact that in the automatic telephone exchange with programmed control, containing a serially connected switching node.

a peripheral communication unit, a central processor, an input / output unit and a memory unit connected to the central processor unit, a control unit and a serially connected interface unit, a code conversion unit and a register connected to the central processor unit, which is connected to the control unit, are inserted; and the second outputs of which are connected respectively to the second inputs of the register and the code conversion unit, the interface block being connected to the switching node.

The drawing shows the structural electrical circuit of the proposed device.

Automatic telephone mill. The Qi contains a switching node 1, a peripheral communication unit 2, a central processor 3, a memory block k, an input-output block 5, a control block 6, a conjunction block 7, a code conversion block 8, a program-controlled register 9ATS with the software .

The change of programs at any station of the network is made from the central station (the main communication node of the network. The programs, as well as service information / number of the required PBX, code for the replaced and newly entered npoi- frames, transition conditions and control transfers, etc. are entered by the operator of the central station in the t-memory block of his PBX from the input-output block 5. According to the number of the required station, the connection is automatically established on the network between the outputs of the central and the desired station 1 interfaces of the information on the input numbers of the switching node 1, in which the interconnection blocks 7 are included, is stored in the blocks and memory of the stations.After the connection is established with the central station, the service information and the program are transmitted. At the same time, the central processor 3 reads the word to the register 9 from the block simultaneously issuing a signal control unit 6. Thereafter, the central processor 3 is released and proceeds to the execution of other programs. Upon receiving a signal from the central processor 3, the control unit 6 rewrites the word from register 9 to the code conversion unit 8 and issues a signal l to central processor 3, which is perceived by it as an interrupt signal (a request to read the next word). Depending on the level of its priority, the CPU 3 either interrupts the execution of the current program and proceeds to the word reading program from the memory block k to register 9 or waits for the end of its execution. At the same time, in the code conversion unit 8 under the influence of the control signals from the control unit 6 is carried out; converting in parallel the read from register 9 Words into a sequence of pulses (converting a parallel code into a serial one) and transmitting it through the conjugation unit 7 and the switching node 1 to the channel and then to the required PBX. Simultaneously with the transfer of the word bit after it and the release of the code conversion block 8, the next word is read.

from register 9 and forming a request to the central processor 3 by the control unit .6, etc. On the receiving side, the serial code is converted back to parallel, the word is read from the code conversion block 8 to the register 9, the request control block 6 is simultaneously formed into the central processor 3 and then interrupted in the last execution of the current program (taking into account priority) and the word is rewritten in the block 4 memories, etc. The interface unit 7 provides for the matching of the electrical characteristics of the output of the code conversion unit 8 and the input of the switching node 1.

Compared to the known, the proposed PBX does not require highly skilled programmers to operate its software and additional memory for storing external software.

with the exception of the main network communication node). The register 9 additionally entered, the mode conversion unit 8, the interface unit 7 and the control unit 6 slightly complicate the circuit, the code conversion unit 8 can be executed based on the shift register operating under the control signals of the control unit 6. The control unit 6 can be made on the basis of a clock generator and pulse distributors or a firmware program of the device. Integrated circuits can be used as the element base, for example, the 155-V series and the 7-interface circuit is an amplifier with an emitter-type output.

The technical and economic effect of H3o6pete tfl is that the use of the proposed PBX allows changing programs at any station of the network from the central station (main communication node). For a hypothetical network including 100 communication nodes, even if there is one programming engineer on each of them, this makes it possible to exclude 100 people from the staff of the network.

Claims (1)

 At the expense of the released programmers, you can create a very powerful software operation center (about ten people) at the main communication center and save (about an average monthly salary of an engineer kO rubles) on the order of 150 thousand rubles. in year. The invention of a programmed automatic telephone station comprising a switching node, a peripheral communication unit, a central processor, an input / output unit and a memory unit connected to the central processor, in order G 8 "centralized program change capabilities, a control unit and a serially connected interface unit, a code conversion unit and a register connected to a central processor, which is connected to a control unit, the first and second outputs of which are connected to the second inputs of the register and code conversion unit are entered the interface block is connected to the switching node. Sources of information taken into consideration in the examination of t. Ivanova O.N. Electronic switching. I., Sts, 1971, p. 11bg 121 (prototype).