SU915263A1 - Multichannel device for transmitting/receiving discrete information - Google Patents

Description

The invention relates to communications and can be used for data transmission, in telegraphy, remote control for the formation of bundles com * mutable channels both dependent and independent of the speed and structure ⁵ rounds transmitted signals (hereinafter called the code-dependent channels and transparently).

A multichannel device for transmitting and receiving discrete information is known, which contains an interface unit with a line, in which the information output is connected to the first inputs of the paging analyzer, receiver codes and through the receive switch to the information inputs of matching channel blocks, and the first input is connected to the first output of the distributor. the second input is connected to the codec output of the code independent channels and the transfer switch, in which the first input is connected to the information outputs of the matching channel blocks,

2 *

The second is with the output of the end-of-analyzer via the control unit, the second output of which is connected to the control input of the receive switch, and the input and output of the write and read are connected to the corresponding inputs and outputs of the codec codec channels, codec codec channels, the echo canceller, receiver codes and operational storage unit ΐυ,

However, the known device has a low bandwidth.

The purpose of the invention is to increase the bandwidth of the communication line.

This goal is achieved by the fact that in a multichannel device for transmitting and receiving discrete information, containing an interface unit 20 with a line in which the information output is connected to the first inputs of the hang-up analyzer, the receiver of codes, and through the receive switch, to information inputs of matching

four

915263

channel blocks, the first input is connected to the first output of the distributor, and the second input is connected to the codec output of the code-independent channels, and the transfer switch, whose first input is connected to the information outputs of the matching channel blocks, and the second to the output of the off-hook analyzer via the control unit, the second output which is connected to the control input of the receive switch, and the input and output of the write and readout are connected to the corresponding inputs and outputs of the codec codec channels, codec codec channels codec, analyzer A tboya, codes receiver and random access memory block, an address driver, a call selector, a buffer block and a randomly-sized memory block are entered, the second distributor output is connected to the address driver's input, the setup input of which is combined with the similar code receiver input and connected to the analyzer output the end of the call, the information input of which is combined with the information inputs of the receiver of the codes, the call selector and connected to the information outputs of the matching channel blocks, whose address inputs connected to the same inputs of the call selector and the buffer block and connected to the output of the address shaper, the input and output of which are recorded and read are connected to the input and output of the record and read the operational margin of the minimizing block, the output of the selector through the buffer block whose control input is connected to the third output control unit, is connected to the second input of the control unit, the fourth output of which is connected to the setup input of the random-access memory block, the input and output of which is read and read One to the same input and output selector call, and transmitting the output switch coupled to the data inputs of the codec transparently through the channels and the code-dependent channel codec interface block with the line "

The drawing shows a structural electrical circuit of the device.

The multichannel device for transmitting and receiving discrete information contains matching blocks 1, transfer switch 2, control block 3, reception switch 4, rebound analyzer 5, line interfacing unit 6, code receiver 7, distributor 8, codec 9 codec independent channels, codec 10 code-dependent channels, operative storage unit 11 !, address formaker 12, buffer unit 13, call selector 14, random access memory unit 15.

The device works as follows.

In the initial state, from the output of the address shaper 12 to the address inputs of matching blocks 1 arrive only at the “call *” position address pulses, which read the input low-speed information from the corresponding matching block into the group discrete signal (GDS) at the transmission and inverse transform at the reception.

The structure of the address pulses is such that in each cycle of the GDS, only one address is formed, which is represented by a certain number equal to the conditional number of the matching unit. In the transition from cycle to cycle, the address shaper 12 searches the numbers (addresses) from 1 to Ν, γλθ N equal to the number of matching blocks. Thus, the access to each matching unit 1 is performed once per N cycles of the SDS signal.

In accordance with the adopted algorithm, establishing a connection on the switched telegraph network in the initial state towards the subscriber and from the subscriber must receive a starting polarity signal or a logical "0".

The transfer of the starting polarity towards the subscriber in the initial state is ensured by the formation in the switch 4 of the receive logical "0" at the "call" position and the gating of this "0" address pulses in the matching blocks.

Signals of logical "0", arriving at the positions of "call" in the signal of the GDS from matching blocks, are recorded by the selector 14 of the call as no call. ”At the same time, in the signal of the GDS (information outputs of matching blocks 1) signals of the logical channels "0", as in the initial state, the driver 12 addresses at the positions of the "channels" and positions "busy"

915263

Do not form address pulses. Therefore, the transfer switch provides at these positions the supply of logical “O” signals to the codec 10 code-dependent and codec 9 codec channels, which transmit this signal to the opposite side to the switching station. In the initial state, from the side of the switching station, the signals of the logical “0” also arrive at the positions of the “channel”.

Signals logical "0" received at the position of "channels" from the paths of transmission and reception, are registered by the rebound analyzer 5, which holds the control unit 3, the code receiver 7, the address generator 12 in the initial state.

Suppose that, from one of the subscribers, a call signal of the drain polarity (logical "1") arrived at the corresponding matching unit (logical "1") 'This signal is transferred to the SDS signal at the "call" position under the action of address pulses corresponding to 25 matching unit number 1 the caller. The call selector 14 registers the logical "1" signal as a call if the duration of this signal is no less than a predetermined 30 value, for example, 100-150 ms, as is customary on the switched telegraph network, and is recorded in the memory block 15 at the caller's address . 35 '

Thus, all calls coming from subscribers are recorded.

The address of the first caller is supplied from the adress-40 adress-40 sa to the first input of the buffer unit 13 at the “call” position and is recorded by the command from the call selector 14 to the buffer unit 13 if the latter is free. 45

The control unit 3 continuously performs channel occupancy analysis. If a number (address- ₅₀ res) is “0” at the channel position in the operational storage unit, the channel is read free, otherwise it is occupied.

When the first of the free channels ^ is detected, the control unit 3 at the corresponding channel position sends ₅₅ commands to the buffer unit 13 to read the address recorded in it to the operational storage unit 11 via the control unit 3. After writing off the buffer unit 13 is released to service the next call. As soon as the address of the channel that serves the call is recorded in the operative storage unit 11, the control unit 3 marks this position (and the corresponding channel) as busy and performs the following operations: erasing the logical "1" on the installation input of the memory unit 15 by the address of the subscriber whose call is serviced, which is necessary to prevent re-servicing of this call, transmitted through the operational blocking unit 11, the prohibition of the formation of an address in the driver 12 at the "call" position of the address the subscriber whose call is serviced in order to prevent re-registration of the already served call, allowing the address in the driver 12 to be located at the channel position occupied for the given call address of the calling subscriber, which provides for transmission and reception at the busy channel position (connecting the caller to the channel); transmitting through the switch 2 transmissions of the information about the caller's address that is occupied for the given channel.

After the transfer of the address, the caller to the opposite side from the control unit 3 through the operational storage unit 11 through the write-read circuits to the release analyzer 5 at the channel position occupied by this call is sent, the command is sent to the output analyzer 5 from the source to the operational state at the specified channel position; In this state, the rebound analyzer 5 continuously monitors information coming from the subscriber and the station, registering the end of call, when continuous starting polarity is received from both sides for a specified time, for example, for a switched telegraph network of at least 300 ms. Signals at the positions of the channel * · catch, coming in the codec 10 code-dependent and codec 9 code-independent channels and in block 6 interface with the line on the reception and transmission, are processed by group methods.

The signals of the address of the caller, allocated at the output of block 6 pairing e line on the opposite

7 915263 8

side, are fed to the first input of the receiver 7 of the code, are received by it, are recorded in the operational storage unit 11 and are received from the last through the address generator 12 to the position of the 5th channel through which the address is transmitted, to the address inputs of the matching blocks 1. In this case 12 addresses at the "call" position, the formation of impulses of this ^{, 0} address is prohibited.

Under the action of pulses received on the address inputs of the matching blocks on channel 1 position, at which the address entered in the corresponding ^'5 present the matching unit 1 reads information on the transmission telegraphic input and its selection on the reception signal from GDM, This completes the process of establishing 20 connections through the proposed device. In the future, the process of transmitting information from the subscriber to the switching station and back flows only with the participation of channel-forming 25 multiplex equipment.

If for the incoming call from the subscriber (matching unit 1), the control unit 3 does not detect a free channel, then from the operational storage unit 11, the address of the calling subscriber, for which no free channel has been found, enters the address generator 12 at the busy position. At the ³⁵ position of the "call", the formation of the address of the caller is stopped, and the address inputs of the matching blocks 1 stop the address at the "busy" position. At the same time, on command from the control unit 3, the receive switch 4 transmits a “busy” signal to the “busy” position, for example, for a switched telegraph network, a ^45- second pulse (logical “1”) pulse that is extracted from the signal SDS at the telegraph output of the calling block 1. caller. The caller receives a ⁵⁰ "busy" signal and gives a "clear" signal, for example, a continuous starting polarity (logical "0") with a duration of more than 300 ms. This signal is overwritten from the telegraph input of the 55th matching unit in the GDS signal. To the "busy" position. Analyzer 5 rebound takes the position of "busy"

from the paths of reception and transmission of logical "0" and after a specified time registers the end of call. At the same time from the analyzer 5 rebound through the shaper 12 addresses in the operational storage unit 11 enters the memory and to erase the address of the subscriber who transmitted the signal of the end. Then from the operational storage unit 11, the transmission of the address pulses to the positioner at the "busy" position of the address pulses stops and their formation begins at the "call" position.

Similarly, there is a hang-up and the destruction of the established connection.

The proposed device allows to increase the amount of information transmitted via code-dependent and code-independent channels.

Claims (1)

Claim A multichannel device for transmitting and receiving discrete information that contains an interfacing unit with a line, in which the information output is connected to the first inputs of the clearback analyzer, the receiver of codes and through the reception switch to the information inputs of matching channel blocks, the first input is connected to: the first output of the distributor, and the second input - with the codec output of the code independent channels, and the transfer switch, in which the first input is connected to the information outputs of the matching channel blocks, and the second to the output. The end-of-clock indicator via the control unit, the second output of which is connected to the control input of the receive switch, and the input and output of the write and read are connected to the corresponding inputs and outputs of the codec of code-dependent signals of the codec independent channel codec, release analyzer, code receiver and random access memory block, characterized in , in order to increase the capacity of the communication line, an address generator, a call selector, a buffer block and a random-access memory block are entered, while the second output is distributed The receiver is connected to the input of the address builder, the setup input of which is combined with the analogous input of the receiver of codes and connection 9 915263 U It is not connected with the output of the end-of-analyzer, whose information input is combined with the information inputs of the receiver codes, the call selector and connected to the information outputs of the matching channel blocks, whose address inputs are combined with the similar inputs of the call selector and the buffer block and connected to the address driver output, the input and the write output Ό and the readout of which is connected to the input and output of the write and read of the operational storage unit, the output of the selector through the buffer unit, the control input of which is connected 15 with the third output of the control unit connected to the second input of the unit control, the fourth output of which is connected to the installation input of the random-access memory block, the input and output of which is read and read are connected to the same input and output of the call selector, and the output of the transfer switch is connected to the information inputs of the code independent codec channels and through the code-dependent codec channels of the interface block with a line.