SU1653175A1 - Device for automatic exchange testing - Google Patents

Description

one

(21) 4600953/09

(22) 11/01/88

(46) 05.30.91. Bksh. Number 20

(71) Specialized designer-technological bureau of construction communication equipment

(72) V.G. Khatskelevich and I.M. Rubin

(53) 621.395.341 (088.8)

(56) EP 0143455 A2, cl. H 04 M 3/24, 1984.

(54) DEVICE FOR INSPECTION OF AUTOMATIC TELEPHONE STATIONS

(57) The invention relates to telecommunications. The purpose of the invention is to enhance the functionality by providing autonomous testing of automatic telephone exchanges of various types and controlling their interaction. The device contains a program and control unit, an information input / output unit 2, a signaling frequency signaling unit 3, a connection unit 4, a multiplexer 5, a signaling system frequency signal receiver 6, and a control and interaction signal receiving unit 7. The device has two modes of operation; in the first mode, when the connecting lines are disconnected, it simulates the operation of the equipment of the interacting station, and in the second mode, when two stations operate, it controls the information they exchange. 4 hp f-ly, 3 ill.

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The invention relates to telecommunications and can be used over telephone networks with pulse-code modulation (PCM) channels.

The purpose of the invention is to expand the functionality by providing offline testing of automatic telephone exchanges of various TYPES AND CONTROL OF THEIR VZIMO-

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Figure 1 shows the structural electrical circuit of the device proposed; Figures 2 and 3 are structural block diagrams of an input / output unit and a signal transceiver unit of frequency signaling systems, respectively.

The device for checking automatic telephone stations contains (FIG. 1) a program block 1 and a control, a block 2 for input-output information, a block 3 for transmitting signals from frequency signaling systems, a block 4 for connecting multiplexer 5, a receiver 6 for signals for frequency signaling systems, and a block 7 for transmitting signals control and interaction, and the information input / output unit 2 comprises (FIG. 2) an input register 8, a decoder 9, a unit 10 of memory registers, a display unit 11, a keyboard 12, an encoder 13 and an output register 14

The transceiver unit 3 of the signaling frequency systems contains (FIG. 3) an input register 15, a spectrum analyzer 16, a command register 17, a decoder 18, a first output register 19, a control register 20, a generator unit 21 and a second output register 22.

The connection unit 4 comprises (FIG. 1) the first and second decoders 23, 24, the first, second and third shift registers 25-27, the first and second expanders 28, 29, the first and second blocks 30, 31 of the comparison, the first, the second and third blocks 32-34 of memory, the first and second blocks 35, 36 of synchronization, the first and second output registers 37, 38, claw tutor 39, input register 40, compander 41, counter 42 and encoder 43.

The transceiving unit 7 of the control and interaction signals (FIG. 1) comprises first and second reception registers 44, 45, first and second command registers 46, 47, first and second decoders 48, 49, and transmission register 50.

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The device works as follows.

The program and control unit 1 periodically polls the state of the keyboard 12 in the information input-output unit 2 for access to which, at certain times, sets, at the second output, the code combination of the selection of the information input-output unit 2, On the keyboard 12, the initial data is typed. break into the following components: work mode, test conditions, special task (if necessary).

The device has two modes of operation.

The first reushm is operation with connecting lines disconnected. In this mode, the device plugs into the connection point of the connecting line of the tested automatic telephone station (PBX) and simulates the operation of the equipment of the counter exchange around the PCM line. To do this, the first input of the device is connected to the connection point of the outgoing line and the output of the device is connected to the connection point of the incoming line of the test PBX. On the keyboard 12 of the information input / output unit 2, the following are typed: first operation mode; check conditions; the type of counter station, the type of connection to be established (incoming or outgoing); special task: types of malfunctions, cyclical nature of the test, the nature of the display of the verification steps and the detected faults. In the case of an incoming connection, the numbers of the called subscribers are dialed and the order of sprinkling of calls (parallel call flow by channel group or serial - by each channel).

From the output of the station under test, to the first input of the device, which is the third input of the connection block 4, information is received in the form of a linear PCM signal. In connection block 4, the decoding, synchronization of the received signal and the extraction of the tone channels information from it is carried out. The decoded signal from the output of the first shift register 25, which is the fourth output of the connecting unit 4, is fed to the fourth input of the control signal receiving and receiving unit 7, which is the information input of the first register 44 receiving, where control and interaction information is extracted. This information from the second output of block 7 is transmitted to the sixth input of multiplexer 5 and from its second output is transmitted to the input of block 1 of programs and controls. From the first output of the block

4 connections to the second input of the signal transceiver unit 3 of the frequency signaling systems are transmitted the information of the tone channels, which in unit 3 is converted to the code of the received frequency signal, which from the first output of the unit 3 is transmitted to the third multiplexer input

5 and from its second output is transmitted to the input of block 1 of the programs and controls. Unit 1 reads the information received from blocks 2, 3, and 7, processes it, and generates information for recording in blocks 3 and 7. From the first test of multiplexer 5, the decoder control signals are transmitted to the input of information input / output unit 2

9 and information to be displayed. From the sixth output of the multiplexer 5, the second input of the block 7 is transmitted by the control signals of the first decoder 48 and the control and interaction information to the transmission. From the third output of the multiplexer 5, the signals to the decoder 18 and information about the frequency characteristics of the digital transmission signals are transmitted to the first input of the block 3. In block 3, the received information is converted into information of tonal channels for transmission, which is transmitted from the second output of block 3 to the first input of block 4. In block 4, information received from the third output of block 7, and information of tonal channels for transmission is converted into information in the form of a linear PCM signal, which from the third output of block 4 of the connection, which is the output of the device, is transmitted to the input of the test vehicle. When block 1 reads programs and monitoring information indicating that there is a malfunction in the equipment of the tested PBX, the corresponding data is displayed and further testing can be terminated.

The second mode of operation - work in the operation of two PBX and connect

connections between the lines. In this mode, the device monitors information in the form of a PCM signal exchanged by the PBX (and the PBX via connecting lines compacted by the PCM system. To do this, the first input of the device is connected to the connection point of the outgoing line ATCj, the second input of the device is connected to the output connection cabbage

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PBX lines 2

second mode of operation; test conditions (types of both PBXs); special task.

The first input of the device, which is the third input of the connection block 4, receives information in the form of a linear PCM signal from the PBX ,. The second input of the device, which is the fourth input of the connection block 4, receives information in the form of a linear I1 (11-signal from the PBX. Receipt and processing of the received information occurs similarly to the reception of information in the first mode described above.

Unit 2 input-output information works as follows.

The input of input register 8, which is the input of information input / output block 2, from the first output of multiplexer 5 from block 1 of programs and control, receives signals of control of the decoder 9 and information intended for display. When entering the input of the decoder 9 from the first output of the output register 8 of the code combination that permits writing to the memory register 10 in the block, from the first output of the di-diffuser 9, the resolution 1 signal and the information to be displayed are transmitted from the second output to the control input of the block 10 of the memory registers The input register code 8 is written to the registers of the memory register register 10, from the outputs of which is transmitted to the inputs of the display unit 11. Information from the outputs of the keyboard 12 is transmitted to the inputs of the encoder 13, from the output of which is transmitted in encrypted form to the information input of the output register 14. When the decoder 9 arrives at the input of the first output of the input register 8, a code combination allowing writing to the output register 14 from the second output decoder 9

A resolution 2 signal is transmitted to the control input of the output register 14, according to which information from the outputs of the keyboard 12 is written in encrypted form into the output register 14, the output of which is transmitted to the first input of the multiplexer 5 for recording in block 1 of the programs and controls.

Unit 3 transceiving signals of frequency alarm systems works as follows

The input of the input register 15, which is the second input of the block 3, from the connection block 4 receives the information of the tone channels. From the output of the input register 15, the information is transmitted to the input of the digital spectrum analyzer 16, the output of which forms the code of the received frequency signal. The input of the register 17 of commands, the first input of block 3, receives the signals of the decoder 18 and the information about the frequency characteristics of the digital transmission signals.

When the code decoder 18 enters the input of the decoder 18 from the first output of the register 17, allowing writing to the first output register 19, the resolution 1 signal is transmitted from the first output of the decoder 18 to the control input of the first output register 19, the code of the received frequency signal is output from the first output register 19, which is the first output of block 3, to the third input of multiplexer 5 for writing programs and control to block T. From the second output of the register 17 of the command, information on the frequency characteristics of the digital transmission signals is transmitted to the information input of the register 20 of the control unit of the generators. When the code decoder 18 enters the input of the decoder 18 from the first output of the register 17, allowing writing to the control register 20, the Resolution 2 signal is transmitted from the second output of the decoder 18 to the control input of the control register 20 and the information about the frequency characteristics of the digital signal is written to the control register 20 and from its output is transmitted to the input of the generator unit 21, from the output of which a digital transmission signal with specified frequency characteristics is transmitted to the input of the second

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output register 22, from the output of which, being the second output of block 3, the information of the tone channels is transmitted to block 4 of the connection. The receiver 6 of the signals of the frequency systems of the synchronization is a set of blocks of the receiving part of the block 3, i.e. blocks 15-19, whose operation is described above.

The connecting unit 4 and the receiving and transmitting unit 7 of the control and interaction signals operate as follows.

The input of the decoder 23, which is the third input of block 4 and the first input of the device, receives information from the test vehicle or line from the line in the form of a linear PCM signal. From the output of the decoder 23, the information converted from a quasi-troic to binary code is transmitted to the input of the first shift register 25, from the output of which in the transformed from serial to parallel form is transmitted to the input of the expander 28, to the information input of the receive register 44 and to the first input of the comparison unit 30 The first input of which receives the first sync characters stored in the keyboard 12. When the first sync characters match from the first memory block 32 with information on the first input of the comparison block 30, it is received from its output to input The synchronization block 35 transmits the signal Match 1. After the specified number of Matches 1 is received in the synchronization block 35, the sync symbol changes from the first output of the synchronization block 35 to the input of the first memory block 32 and the sync symbol changes from the output of the first memory block 32 to the second input of the comparator unit 30 begins to transmit the first and second sync symbols in a predetermined sequence. After receiving a specified number of matches 1 and II in synchronization block 35, both sync symbols from the second output of synchronization block 35 to the second control input of reception register 44 receive a periodic signal Receiving control information, and from the third output of synchronization block 35 to control input of output register 37 a periodic signal is received Receiving information of the tonal channels, when it arrives at the output register J7, information is recorded which arrived at its information input from the output of the expander 28. Further information The tone channels from the output of the output register 37, which is the first output of the connection block 4, is transmitted to the block 3. The input of the register 46 of commands, which is the second input of the block 7, is received from the sixth output of the multiplexer 5 formed in the block 1 of the program and control information on the transmission and control signals of the decoder 48. When a command from the first output of the register 46 receives the code combination to the input of the descramger 48, the code allows reading information from the output of the receive register 44 from the first output of the decoder 48; yuschy receiving input register 44 is transmitted to the signal resolution 1. From the output receiving register 44 is yuschegos second output unit 7, the information is transmitted to the second input of the multiplexer 5 for recording in the block 1 and control programs. When a code combination is received from the first output of register 46 to the input of the decoder 48 unlocking writing to the transfer register 50, the control output of the transfer register 50 is transmitted to the control output 50 from the second output of the decoder 48 to the control and the control register 50 is written to the transfer register 50 its output is transmitted to the second information input of the switch 39. The input of the input register 40, which is the first input of block 7, from block 3 receives the information of tonal signals, which from the output of the input register 40 is transmitted to stroke compander 41. After the compression information output from the compander 41 is transmitted to the first information input of switch 39. The output from the first counter 42 to the third input of the unit 34, the memory control signals are transmitted, the output of which the third informational input of the switch 39 are transmitted Synchrosymbols transmitting. From the second output of the counter 42, signals are transmitted to the control input of the switch 39, under control of which, from the output of the switch 39, the input for transferring information is transferred to the input of the third shift register 27;

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parallel to the serial view is transmitted to the input of the encoder 43, from the output of which is the third output of block 7 and the output of the device, the information in the converted from binary to quasi-trivial code is transmitted as a linear PCM signal to the in-line or test ATC. Blocks 24, 26, 29, 31, 33, 36, 38, 45, 47 and 49 work in the second mode, similarly to the blocks 23, 25, 28, 30, 32, 35, 37, 44, 46 and 48, respectively, and together with them .

Claims (5)

1. A device for testing automatic telephone stations containing a program and control unit, an information input / output unit, a signal receiving unit of frequency signaling systems, a connection unit and a multiplexer, the first, second and third inputs and outputs of which are connected respectively to the output and the input of the input / output unit of information, with the first output and the input of the program and control unit and with the first output and input of the transceiver unit of the signals of the frequency signaling systems, the second output and the input of which are connected to the first respectively, the input and output of the connection unit, characterized in that, in order to provide autonomous testing of automatic telephone exchanges of various types and control their interaction, the receiver of signals of frequency signaling systems and the transceiver unit of control and interaction signals are inserted, the fourth, The sixth and sixth inputs and outputs of the multiplexer are connected respectively to the output and the first input of the receiver of the signals of the frequency signaling systems and to the first and second outputs and inputs of the block when control and communication signals, the third input and the third, fourth, fifth and sixth inputs of which are connected respectively to the second input and to the second, fourth, fifth and sixth outputs of the connection unit, the third output of which is the output of the device for testing automatic telephone exchanges , the first and second inputs of which are respectively the third and the fourth inputs of the connection block, the seventh output of which is connected to the second input of the signal receiver frequency alarm systems, and the second output of the program and control unit is connected to the seventh input of the multiplexer. 2. A device according to claim 1, characterized in that the input / output information block is made of a serially connected input register, a decoder, a block of memory registers and a display unit, and a serially connected keyboard, an encoder and an output register, the control input of which is connected to the second output a decoder, wherein the signal input of the memory register unit is connected to the second output of the input register, whose input and output of the output register are respectively the input and output of the information input / output unit. 3. The device according to claim 1, characterized in that the signal reception unit of the frequency signaling systems is made up of a serially connected input register, a spectrum analyzer and the first output register and serially connected command register, decoder, control register, generator unit and second output register The output of which is the second output of the signal transceiver unit of the frequency signaling systems, the first and second inputs and the first output of which are respectively the register input coma The input register input and the output of the first output register, whose control input is connected to the output of the write resolution of the decoder, and the second output of the command register is connected to the signal input of the control register. 4. The device according to claim 1, characterized in that the connection unit is made of a serially connected first decoder, a first register, a first expander and a first output register, successively connected to the first comparison unit, the first synchronization unit and the first memory unit connected in series the second decoder, the second register, the second expander and the second output d 0 five 0 five 0 five 0 five a horn, a serially connected counter and a third memory unit and a serially connected second comparison unit, a second synchronization unit and a second memory unit, serially connected input register, compander, switch, third register and encoder, the output of which is the third output of the connection unit, The second, third and fourth inputs and the first, second, fourth, fifth, sixth and seventh outputs of which are respectively the input of the input register, the second signal input the switch , the input of the first decoder, the input of the second decoder, the output of the first output register, the second output of the second synchronization unit, the output of the first register, the second output of the first synchronization unit, the output of the second register and the output of the second output register, the second input of which is connected to the third output of the second synchronization unit, the third output of the first synchronization unit is connected to the second input of the first output register, the output of the first register is connected to the first input of the first comparison unit, the second input of which is connected to the output of the first The second memory block is connected to the first input of the second comparison block, the second input of which is connected to the output of the second memory block, and the output of the third memory block and the second output of the counter are connected respectively to the third signal and control inputs of the switch. 5. The device according to claim 1, characterized in that the transceiver unit of control signals and interaction is made of a transmission register, serially connected to the first command register, first decoder and first reception register and serially connected second command register, second decoder and second reception register, the second the control input of which is the third input of the transceiver unit of the control and interaction signals, the first, second and third outputs and the first, second, fourth, fifth and sixth inputs of the cat These are respectively the output of the second reception register, the output of the first reception register, the output of the transmission register, the input of the second command register, the input of the first command register, the signal and second control inputs of the first receive register and the signal input of the second reception register, and the signal and control inputs of the transmission register are connected to the second outputs of the first command register and the first decoder, respectively, Fig 2 3