SU1298936A1 - Device for providing change-over of voice frequency channels - Google Patents

Abstract

The invention relates to telecommunications. The purpose of the invention is to reduce the switching time to the backup channel. The device contains on the leading side the control unit 1, i. Transmitter 2 commands, receiver 3 commands, switching unit 4, information transmission equipment 5, and on the slave side - control unit 6, switching unit 7, 8, pp-p 10, the extension cable P, the receiver 13, the information transfer apparatus 15. Block 1 contains a signal generator 16, analyzers 17 and 18, a command generator 19, a selection block 20, a state register 21. Block 6 contains the driver 22 commands, the analyzer 23, the counter 24, the sensor 25 pulses. Newly introduced are 9, switch 13, electronic switch 14. 1 Il. N CO oo fi with O5

Description

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The invention relates to telecommunications and can be used in i systems for automatic control of means and channels at communication nodes.

The purpose of the invention is to reduce the switching time to the backup channel. The drawing shows the electrical circuit of the proposed device.

The device dp channel frequency reservation contains on the leading side control unit 1, transmitter 2 commands, receiver 3 commands, switching unit 4, information transmission equipment 5, and on the slave side - control unit 6, switching unit 7, first and second amplifiers 8 and 9, transformer 0, extension cable 11, command receiver 12, switch 13, electronic switch 14, information transmission apparatus 15 The control unit on the leading side contains a driver

16 signals, first and second analyzers 17 and 18, command generator 19, selection block 20, state register 21. The control unit on the slave side contains the shaper 22 of the priority subscribers — to the analyzer 18 (channel failures), where the priority rank of the subscriber and its block number are determined, the latter before 1t to the shaper 19 of the switching control commands and the shaper 16 of the interaction signals. In accordance with the priority ranks in block 20 of the choice of the backup channel, the list of information transfer equipment units 5 is determined, the working channels of which can be used as backup channels, and according to the information stored in the state register 21 Selects a healthy channel, the number of which is transmitted to the driver 19 of the switching control commands. The shaper 19.cand issues a command to the switching unit 4 to connect the selected channel to the transmitter of 2 commands and to the receiver of 3 commands. After that, the generator 6 of the interaction signals generates and sends a call signal to the transmitter 2 commands.

On the slave side, the call signal is detected by the receiver of 12 commands and the control unit 6 on the channel during the cyclic polling of the outputs.

25

mand, analyzer 23, counter 24, receiving channels by electronic switch 25 pulses.

The device works as follows

In the initial position on the leading side, the equipment 5 transmits information to the channel whose address of the beeization works over communication channels with the andes from counter 24, amplifier 8 and

torus 14. The analyzer 23 (signals) stops the sensor 25 pulses and through the driver 22 commands (control) switching provides subparate 15 transfer information of the slave side. On the slave side, the sensor 25 of the pulses of the control unit 6 controls the operation of the high-resistance electronic switch 14, performed, for example, on the basis of the shift register and ensuring cyclical polling of channels entered into it. Dpi40

(transit) extension 11, providing a signal transit Call in the direction of the leading side, and switches the switch 13 to position a, connecting the receiver 12 commands to the second output of the transformer 10.

On the leading side of the channel reception path, the response signal. Call

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The polling frequency of each channel is determined by the receiver 3 commands and is replaced by the pulse frequency, the sender 17 of the control unit 1, the pulses formed by the sensor 25 and the worldizer 16 signals (the interaction is 0.15-0.20 meters). Impulses of opvina) produces and. delivers 25 pulses to the transmitter from the sensor output

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they are calculated by a cyclic counter 24, which forms the address of the polled channel.

On the leading side, which is the initiator of reservation, signals about the working channels failures from the outputs of the information transfer equipment 5 are sent to the channel status register 21, and about the working channels failures

Tick 2 commands number of the equipment unit 5 transmitting information of the priority subscriber to connect to this channel.

The control unit 6 of the slave side, upon receipt of this command, ensures that the amplifier 8 and the (transit) extension 1 1 are disconnected from the channel and the connection of this channel to the equipment transfer unit 5

priority subscribers go to analyzer 18 (channel failures), where the subscriber’s priority rank and its block number are determined, the last one before 1etts into the driver 19 of the switching control commands and the driver 16 of the interaction signals. In accordance with the priority ranks in block 20 for selecting the backup channel, a list of information transmission equipment units 5 is determined, whose working channels can be used as backup channels, and according to the information stored in state register 21 (channels), a healthy channel is selected whose number is transmitted to the driver 19 of the control commands by switching. The driver of the 19. command issues a command to the switching unit 4 to connect the selected channel to the transmitter 2 commands and the receiver 3 commands. After that, the driver 6 of the interaction signals generates and sends a call signal to the transmitter 2 commands.

On the slave side, the call signal is detected by the receiver of 12 commands and the control unit 6 on the channel during the cyclic polling of the outputs.

0

five

 receiving channels by an electronic switch to a channel whose address is taken from counter 24, amplifier 8 and

14. The analyzer 23 (signals) stops the sensor 25 pulses and through the driver 22 commands (control) switching provides under

(transit) extension 11, providing a signal transit Call in the direction of the leading side, and switches the switch 13 to position a, connecting the receiver 12 commands to the second output of the transformer 10.

On the leading side of the channel reception path, the response signal. Call

The sender 17 of the control unit 1, the Former 16, of the signals (interactions) generates and. delivers in transmit

Tick 2 commands number of the equipment unit 5 transmitting information of the priority subscriber to connect to this channel.

The control unit 6 of the slave side, upon receipt of this command, ensures that the amplifier 8 and the (transit) extension 1 1 are disconnected from the channel and this channel is connected to the information transfer equipment unit 5, and also the switch 13 is switched to the position b and further polling of the output channels using the Electronic Switch 14,

The termination of the response to the master side of the response command for connecting the channel to the information transfer unit 1 is a signal of its execution on the slave side, after which the control unit 1 issues a command to the switching unit 4 to switch the channel from the receiver 3 commands and the transmitter 2 commands to the equipment block 15 transmission of information of the leading party. The backup process ends.

Claims (1)

Invention Formula A device for reserving tonal frequency channels, containing on the leading side a control unit, the first output of which is connected to the first input of the switching unit, the second input of which is connected to the output of the command transmitter, the input of which is connected to the second output of the control unit, the first input of which is connected to the output of the command receiver, whose input is connected to the first output of the switching unit, which is connected to the inputs of the equipment Editor A, Gratillo Order 900/60 Compiled Oh, Geller Tehred M. Khodanych Proofreader G, Reshetnik Circulation 639 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab ,, d, 4/5 Production and printing company, Uzhgorod, st. Project, 4 2989364 giving information, the outputs of which are connected to the second inputs of the pack five 0 five and on the slave side is the switching unit, the first output of which is connected to the input of the first amplifier, the output of which through a transformer is connected to the extension input, the output of which is connected to the first input of the switching unit, the second input of which is connected to the first output of the control unit whose input is connected to the output of the receiver of commands, while the information transmission equipment is connected to the switching unit, which is different, in order to reduce the switching time to the backup channel, on the slave side the switch, the second amplifier and the electronic switch, whose output through the second amplifier is connected to the first input of the switch, the second input of which is connected to the second output of the control unit, the third output of which is connected to the first input of the electronic switch, the second inputs of which are connected to the second outputs of the switching unit, the second output of the transformer is connected to the third input of the switch, the output of which is connected to the input of the command receiver.