SU1584050A1 - Joint network of documentation communication - Google Patents

Abstract

This invention relates to telegraph communication. The purpose of the invention is to expand the functionality by increasing the range of networks and the number of subscribers. The network contains a central switching unit 1, switching stations 2 and 3, a signal converter 4, an output converter of 5 telegraph signals, an input converter of 6 telegraph signals, a converter of 7 fixed signals, terminal blocks 8, 9, 10 and 13, output 11 and input 12 converters telegraph signals. The transmission is carried out using a switching station 3 switching, which implements the principle of switching channels. It is based on a preliminary correspondent connection with the subsequent transmission of the message. From the terminal unit 9 of the telex network of the calling correspondent, a call signal is issued, which is transmitted via a communication channel to the switching station 3, from which the "Invitation to dial" signal is received via the reverse channel. Station 3 performs switching at the received address, connecting the output of the communication channel to the input of converter 7. After the transmission of the message, the connection is destroyed. The teletes network is built on the basis of using packet switching of transmitted information signals. The transfer from the telegraph network to the one-way fixed-network communication is carried out by means of switching station 3 with the preliminary establishment of correspondent connections. Other switching options are possible. 4 il.

Description

The invention relates to a telegraph network and can be used to exchange various types of documentary information.

The purpose of the invention is to expand the functionality by increasing the range of networks and the number of subscribers.

FIG. 1 shows a structural electrical circuit of the proposed network; in fig. 2 is a structural electrical circuit of the output converter of telegraph signals; in fig. 3 - structural electrical circuit of the input converter of telegraph signals; in fig. 4 is a structural electrical converter circuit of facsimile signals.

The integrated document communication network contains the central switching node 1, the first 2 and second 3 switching stations, the 4 signal converter, the output converter 5 of telegraph signals in the central switching node, the input converter of 6 telegraph signals in the central switching node, the converter 7 of facsimile signals i central switching center, terminal blocks 8 of the teletex network $ terminal blocks 9 of the telex network, terminal blocks of the 10 facsimile network, output converters of 11 telegraph signals, input reobrazovateli 12 telegraphic signals and terminal blocks 13 telegraphic communications network.

The output converter of telegraph signals contains the first distributor 14, the first block 15 of the elements And, the first block 16 of registers, the element OR 17, the first coding block 18 and the first block 19 of signal analysis and synchronization.

The input converter of telegraph signals contains the second signal analysis and synchronization block 20, the second distributor 21, the second block 22 of the elements And, the second block 23 of registers, the decisive block 24, the first output matching block 25 and the second encoding block 26.

The facsimile signal converter includes a synchronization unit 27, a signal generator 28, a decoder 29, a control unit CS, a second output matching unit 31, a unit 32 eur-1, AND signal recoding and a register 33

The network works as follows.

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Pergacha is carried out by means of switching station 3 switching, which implements the principle of switching canal. It is based on a preliminary correspondent connection with the subsequent transmission of the message. From the terminal unit 9 of the telex network of the calling correspondent, a call signal is issued, which is transmitted over the communication channel to the switching station 3. The reverse link from the switching station 3 to the end units 9 of the telex network receives an invitation to dial. The operator of the network telex terminal unit 9 dials on the keyboard the code address of the called subscriber, which also passes through the communication channel to the switching station 3. Station 3 performs switching at the received address, connecting the output of the communication channel of the telex network to the input of converter 7 of facsimile signals. At the same time, a reverse link is transmitted from station 3 to the end units 9 of the telex network and a signal is transmitted. The connection is established. Thereafter, a message previously prepared in the form of a punched tape begins to be transmitted from the terminal blocks 9. The signals of this message are transmitted over the communication channel, passing through the switching station 3, and are input into the converter 7 of the facsimile signals, where the telegraphic code of the NTK 2 is converted into video code. The video code signals are transmitted to the correspondent via a communication channel and documented on the eyelet unit 10 of the facsimile network. After sending the message on a signal, I’m disconnecting from the terminal block 9 of the telex network at station 3. commutation is allowed,

The transmission from the telex network to the one-way facsimile network is as follows.

The telex network is built on the basis of the use of packet switching of the signals of the supplied information. A message transmitted from a single correspondent to a telex network terminal unit 8 and entered into switching station 2, after restoring the original structure, is entered into a storage unit (not shown) of switching station 2. At the address of this message, a 4 signal converter that links the switching stations 2 and 3 of both

networks, provides input to the station 3 switching. At the specified address, the switching station 3 commits the connection of the corresponding converter output 4 signals to the converter input 4 fax signals. Simultaneously with the station

3 switching through converter

4 signals to switching station 2 are signaled. A connection is established. Therefore the message is signaled

From the storage station 2 of the commutation, the signal converter 4 passes through the switching station 3 and is inserted into the facsimile signal converter 7.

After the message code has been converted into video code, video code signals are transmitted via a communication channel to a correspondent and documented on the fax network terminal unit 10. After the message has been transmitted from the accumulator, the 4 signal is output from the 4 signal converter.

The transfer from the telegraph network to the one-way facsimile network is as follows.

The transmission is carried out using switching station 3 with the preliminary establishment of correspondent connections. At the telegraph network terminal 13, a code address is dialed from the calling correspondent. The address signals in the NTK 2 code are input to the telegraph signal converter 11 and, as combinations, the Morse code is transmitted over the communication channel to the central switching unit 1. In the central switching unit 1, the signals from the output of the communication channel are fed to the converter 6 of telegraph signals and then to the switching station 3. In converter 5 (11) and

5 (12), not only the conversion of codes is carried out, but also the formation of the structure of the service part of the message to increase the reliability of the address transmission. An address transfer is preceded by an auto-start signal. With the reception of the auto-start from the output of the converter to the switching station 3, a signal is issued. The call prepares the input circuits of the station.

3 switching, and then an address signal. This signal is used to switch the output of converter 6 to the input of converter 7. At the same time, to the input of the reverse communication channel,

switching stations 3 through the conversion spruce 5 signal transmission is performed. Connection is established.

After the calling correspondent receives this signal, a message is sent from the terminal unit 13 of the telegraph network, previously prepared in

perforated tape. The message passes through the converter 11, the communication channel, the converter 6 to the switching station 3 of the central switching node 1 and more via the converter

5-7, the communication channel to the facsimile network terminal unit 10 for documentation. After the end of the transmission in the converter 6, in the central node 1 commutation of the signal

End of transmission A signal is formed that stops the supply of any signals from the output of the converter 6. This corresponds to the Hang-up signal, which destroys the connection in station 3

5 switching.

Other options for switching correspondents are possible. The operation of elements of the obelinec network for such cases is determined by the described algorithms.

0 An indicator of the effectiveness of the proposed unified network may be the magnitude of the reduction in the transit time of a message to the method by correspondents. In the absence of automatic

Five transitions between networks and the use of tape transfer take several minutes to complete, and in the presence of automation ten seconds. This ensures the exchange between correspondents equipped with various types of terminal equipment, for example, roll and ribbon TLG devices and FT devices, etc.

Claims (1)

Invention Formula The integrated document communication network, which contains the first switching station in the central switching node, is connected via a signal converter to the second switching station, while the teletex network terminal blocks are connected to the first switching station, and the second switching station connects to the second switching station telex network termination units, characterized in that, in order to extend the functionality, by to increase the range of networks and the number of subscribers, the end units of the telegraph network, input to the output transformers of telegraph signals, the terminal units of the network of facsimile communication and in the central switching unit the input and output converters of telegraph signals and the converter of facsimile signals whose input is connected to the first output of the second switching station, the second output of which is connected to the input of the output converter of telegraph signals, the output of the input converter of telegraph signal in the central switching unit it is connected to the input of the second switching station, the output of the facsimile signal converter through the communication channel of the subkeys to the terminal units of the facsimile communication network, the terminal units of the telegraph network of communication are connected to the corresponding input and output converters of telegraph signals which, through communication channels, are connected respectively to the output and input transform. Rafny signals central. Kokmutadai, in this case each telegraph signal converter contains the first coding block, the OR element, the first block of registers, the first block of IG elements, the first distributor and the first block of signal analysis and synchronization, the gy output of which is connected to the ECOM of the first distributor whose first outputs connected to the first inputs of the first block of AND elements, the first outputs of which are connected to the first inputs of the first block of registers, the first outputs of which are connected to the first inputs of the OR element, the second input of KOTOR The GO is connected to the second first block of elements And, the second input of which is connected to the second output of the first block of registers to the second input of the first block of signal analysis and synchronization, the black input of which is connected to the second input of the first block of registers, the third input of which is connected to the second output of the first block analysis of signals and synchronization, the third output of which is one with the third input of the first backup of the I elements, the fourth input of which is connected to the fourth output of the first 3 of the signal analysis and synchronization, third To the fourth inputs of which are connected respectively to the second and third outputs of the first distributor, the output of the element OR is connected to the input of the first coding unit, the output of which is the output of the output converter of telegraph signals, the input of which is the first input of the first and first signal analyzing unit and sync 33L. and, each input converter of telegraph signals contains a second coding block, a second block of signal analysis and synchronization, a second distributor, a second block of elements And, a second block of registers, a decisive block and a first output matching block, the first input of which is connected to the output of the second encoding block and the input of the second block of signal analysis and synchronization, the first output of which is connected to the third input of the first output matching unit and to the first input of the second distributor whose outputs are connected to three Secondary inputs of the second block of elements And, the outputs of which are connected to the second inputs of the second block of registers, the outputs of which are connected to the fourth input of the first output matching block through the decision block, the second input of which is connected to the sixth output of the second block the outputs of which are connected respectively to the first and second inputs of the second block of elements And, the second input of the second distributor is connected to the second output of the second block of signal analysis and synchronization, five The first output of which is connected to the first input of the second register block, the input of the second encoding block is the input of the input converter of telegraph signals, the output of which is the output of the first output matching block, and the converter of facsimile signals contains the transcoding of signals, the second output matching block, register, driver signals, the decoder control unit and the synchronization unit, the first output of which is connected to the first input of the signal conditioner and the first input of the register, the output of which pogo connected to the third input of the second, output matching unit, the second the input of which is connected to the output output of the fs-signal mixer, the second output of which is connected to the first input of the control unit, the second one of which is connected to the second output of the decoder, the first output of which is CCF-dinen and the third input of the control unit The fourth hots of which is connected to the second output of the synchronization unit, the first input of which is connected to the second input of the register and to the inputs of the decoder, the third output of which connected to the second input of the signal conditioner, the third input of the synchronization unit is connected to the second output of the control unit, the first output of which is connected to the first input of the second output matching unit, the output of which is connected to the input of the transcoding unit of signals, the output of the inverter facsimile signals whose input is the input of the decoder. 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