SU775857A1 - Method of automatic switching in communication system - Google Patents

Description

one

The invention relates to communication technology and can be used for automatic switching at the nodal points of analog and discrete information .5

The spindles are a method of automatic switching in a communication network, including the transfer of subscribers of a number signal to a station, and at the station of signals of a subscriber number, the analysis of tO communication channels and placing the subscriber on a queue with busy channels, and with unused kangsh switching subscribers 1.

However, the known method of automatic switching in a communication network has bandwidth due to the presence of channel switching centers in the system.

The aim of the invention is to increase the capacity of the communication network.

In order to achieve this goal by the proposed method, when subscribers transfer a number signal to a station, 25 receive the subscriber number signals at the station, transfer the communication kaneshes to the station and put the subscriber on a queue with busy channels, and with unencrypted communication channels,

the subscriber’s stations, simultaneously with the subscriber’s transmission of number signals to the station, transmit additional signals on the type of information being transmitted, after receiving number signals on the station, the type of information transmitted is analyzed, and it is memorized during the transmission of discrete information on busy channels with the subsequent transfer after the release of the channels, and with the transmission of analog information and busy channels, the channels are switched with the waiting.

The drawing shows a structural electrical circuit of the device that implements the proposed method.

Claims (2)

A device that implements the proposed method. Contains an answering machine 1, an automatic telephone exchange for further communication (ATC TO 2, which is connected to the further communication channels 3, the Local telephone exchange 4, subscribers 5, subscribers 6 and 7 of data transmission and photo-telegraph messages, block 8 Kangshov occupancy control, the call generation unit 9 connected to the data transfer multiplexer (MTD) 10, which is connected to the channel occupancy control unit 8 and the electronic computer 11), the message type definition unit 12 is entered connected to PBX DS 2, answering machine 1 and MTD 10. The device works as follows: Consider the interaction of the device blocks when sending a telephone message. For example, a direct subscriber of the 5 local PBX 4 needs to install a telephone connection via a further communication channel. 3, to which the corresponding number is assigned in the PBX d 1ln 2. 2. For this, the subscriber 51 of the local PBX 4 dials one number corresponding to the output on the PBX DS 2. As soon as the subscriber 5 hears a signal allowing dialing (dumb), he produces a number correspondingly n of the called rule, and further one digit corresponding to that message, channel distal .If communication in the selected direction okazhets free, then the caller will hear a second 5 permissive dialing signal (buzzer) in the selected direction. After dialing subscriber 5, a connection is established, i.e. long-distance channels 3 are switched without waiting. If, when dialing a number, the calling line and additional, ... the digits corresponding to the type of message, the desired long-distance link 3 turned out to be busy, then subscriber 5 due to free searching in . AfC DC 2 is automatically connected to; A type determining unit 12 is communicated in which, after the last digit is decoded, an answering machine 1 is connected to the calling subscriber 5. The last voice signal notifies the subscriber 5 that the called long-distance call 3 is busy and prompts him to write to the queue. IF subscriber 5 refuses to write to the queue, then he hangs up the phone and all blocks of the device go off. When you agree to the queue, he continues to dial the subscriber number 5 on the called object and then dials his phone number, in this In this case, the message type determining unit 12 is connected to the data transfer multiplexer 10 for the subsequent recording of the entire number in the computer 11. As soon as the subscriber 5 has finished writing to the queue, the intermittent ticker-type signal is sent to the caller 5 from the computer 11, indicating that the subscriber nt 5 put on the waiting list. In this case, the caller 5 hangs up on the phone and waits for EV to go to the telephone call. Channel occupancy monitoring unit 8 Continuously monitors the status of the occupied channels, which, in turn, are continuously polled by the computer program 11. As soon as the desired channel is free, the call generation unit 9 immediately connects to the waiting subscriber. 5 and the corresponding local subscriber 5 on the called object. Thus, the switching of the waiting channels is carried out. Consider the case of data transfer. In order that subscribers 6 and 7 of data transmission and phototelegraph communication are usually connected directly to PBX DS 2. If the called direction in the PBX DS 2 is free, then, like in a telephone message, automatic end-to-end switching occurs to the next switching center. Suppose that the called long-distance cable 3 is busy, then by an additional digit corresponding to the type of message, the caller of the data transfer is connected to the MPD 10 for recording in the computer memory 11. From the MPD 10, the subscriber 6 of the data transmission sends a signal notifying about establishing a connection over which subscriber 6 performs data transmission. The latter is stored in the memory of the computer 11. As soon as the desired long-distance channel 3 is released, as determined by the channel occupancy control unit 8, the call generation unit 9 is connected to the PBX DS, which calls, identifies and connects to the desired channel the remote communication 3 and the local subscriber 5 at the called object. Thereafter, the MTD 10 is connected to the corresponding long-distance communication channel 3 and the data recorded in the computer memory 11 is transmitted. This is how the messages are switched. Transmission of phototelegraphic messages from subscribers of phototelegraphic communication is carried out similarly to the transmission of data. Thus, the proposed device allows for the transmission of all types of messages over a single communications network, as well as streamlined. to evenly distribute the load on the communication network during the day, which, in turn, will increase the efficiency of using communication channels, terminal equipment and electronic computers. Claim 1, A method of automatic switching in a communication network, including a subscriber transmitting a number signal to a station, receiving subscriber number signals at a station, analyzing a communication channel and putting a subscriber on a queue with busy channels, and with unoccupied channels commutation of subscribers, which are connected with the fact that, in order to increase the capacity of the communication network, simultaneously with the subscriber’s transmission of number signals to the station, they transmit additional signals on the type of information being transmitted, receiving at room le signal station manufac t analysis type of information transmitted, wherein the transmission of discrete information channels when occupied by the manufac t memorizing its subsequent transfer upon release channels. The method according to claim 1, characterized in that, when transmitting 5 analog information and busy channels, the channels are switched with waiting. Sources of information taken into account in the examination 1. Davydov GB and Ivanova O.N. The main directions of scientific and technical progress in telephone communication. M., Sv zb, 1978, p.58 (prototype). .