SU1354438A1 - Apparatus for checking long-distance telephone exchanges - Google Patents

Abstract

The invention relates to a telephone communication technique and improves the accuracy of control. The device contains a transceiver unit (BPP) 1 signals of frequency signaling systems, PPO 2 signals of physical lines, PPO 3 condensed lines signals, switch 4, information input / output unit 5, program 6 and control unit, interworking signal generator 7 and time delay unit 8 . 7 hp f-ly, 8 ill. (L co 4 4 CO 00 / g / V Fig, 1

Description

one

The invention relates to engineering. telephone communication and can be used to verify automatic long-distance telephone exchanges (AMTS) ..

The purpose of the invention is to improve the accuracy of control.

Fig. 1 shows the electrical circuit diagram of the device for checking the automatic long-distance telephone station; 2 is a structural electrical circuit of an information input / output unit; on fig.Z - diagram of the signal generator interaction-13

STI; figure 4 - block diagram of the receiver-ig mutator 4 connects the path from the blocks

frequency signaling system transmitters; FIG. 5 is a block diagram of transceiver units of signals of physical lines; in fig. 6 is a block diagram of transceiver signals of compacted lines; in fig. 7 is a block diagram of the time delay; in fig. 8 is a switch diagram.

The device for testing AMTS (Fig. 1) contains a block T of transceivers of signals of frequency signaling systems, a block 2 of transceivers of signals of physical lines, a block of 3 transceivers of signals of condensed lines, a switch 4, a block of information input-output 5, a block of 6 programs and controls, a driver 7 interaction signals and block 8 time lag.

Information input / output unit 5 (Fig. 2) comprises a register unit 9,; a block of 10 counters, a display unit 11, a decoder 12, and a switch 13.

The driver of the interaction signals (FIG. 3) contains a master oscillator 14 and a divider unit 15.

Block 1 of transceivers of signals of frequency signaling systems (Fig. 4) contains a block 16 of decoders, a block of memory 17, a block of 18 keys, a block of 19 filters, a block of 20 bandpass filters, a converter 21 of a harmonic signal into a discrete block and a buffer block 22.

The transceiver unit 2 of the signals of the physical lines (FIG. 5) contains a decoder 23, a memory unit 24, a memory installation element 25, a transmission relay unit 26 and a reception relay unit 27.

Block 3 of transceiver signals of compressed lines contains (FIG. 6) a memory installation element 28, a decoder 29, a memory block 30, a signal transmitter 31 and a signal receiver 32.

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Block 8 time delay contains (Fig, 7) block 33 frequency dividers,. switch 34 and interrupter 35.

Switch 4 contains (Fig. 8) block 36 trigger, block 37 registers and block 38 of the electronic matrix.

The device for checking the automatic long-distance telephone station is connected to a specific linear complex (LC) on the incoming side of the automatic long-distance telephone station automatically using a switch 4. On a command from block 6 of programs and controls (Fig. 1) through block 5, input / output information of the com10

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1-3 transceivers required in this particular case for specific LCs of the tested AMTS. In this case, the block 5 input-output information ensures the coordination of signals by level, duration and power

Consider connecting to the ATMS unit 1 transceivers 1 signals of frequency signaling systems, as well as 5 unit 2 transceivers of signals of physical lines. Shaper 7 signals interaction generates signals with frequencies used in block 1 transceivers and in block 8 time delay. In this case, the master oscillator 14 (FIG. 3) generates a frequency that is fed to a divider block 15. The divider unit 15 provides the required number of different signals with frequencies of 450,. 700, 800, 900, 1100, 1300, 1500, 1700 and 2600 Hz.

The connection of these frequencies to the output of block 1 of transceivers 1 (figure 1) occurs on commands from block 6 of the programs and controls.

At the same time, a signal with a frequency of 900 Hz is fed from the generator 7 of the interaction signals to the input of the time delay unit 8 for forming time intervals of 20, 50, 200 and 800 ms, 1 s, 3 minutes. These intervals are used to periodically start programs by the system of interrupting block 6 of programs and control. In this case, a signal with a frequency of 900 Hz is supplied from the driver 7 of the interaction signals to the frequency divider block 33 (Fig. 7). At its output, the necessary

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 a set of frequencies, using which different time intervals are obtained. Switching of any of the frequencies, which are input to the switch 34, is carried out according to signals from block 6 of the programs and monitored through block 5 of information input-output. A switched signal of a certain frequency controls the operation of converter 35. The interrupt signal is fed through the information input-output block 5 to the block 6 of programs and controls. Before the incoming set is occupied from the side of the device for checking the AMTS, the signal is initialized in the LC of the intercity connecting lines (SLM) confirming

the freedom of this SLM. The signal is 15 hours (first the LAN code, then the number

In the LK SLM, the following happens: on a command from block 6 of programs and control, via the block 5 input-output information, the operation code Turn On and the addresses of certain relays are transmitted. When these turnips are triggered, certain potentials are formed on the wires a, b, with SLM.

The next step is to occupy the incoming AMTS kit from the side of the AMTS device.

The two-frequency occupancy signal is signaled to the alarm system at a frequency of FJ 1600 Hz continuously until a ready signal is received from the incoming AMT dialing kit.

Upon a command from the program block 6 and the control, the information input / output unit 5 is put into operation of the transmitter of the transceiver block 1 (Fig. 1) operating at a frequency of 1600 Hz. This signal with the required level through the switch 4 is fed by wires to the i-th incoming set of the tested AMTS. Checking the telephone station in response to receiving the occupation signal generates a Readiness signal for dialing a code with a combination of frequencies F and Fj. Receipt of this signal by wires The transmission from the i-ro of the incoming set of the tested AMTS through the switch 4 is recorded by the unit 1 transceivers. This and all other signals expected from the AMTS are scanned at specific time intervals generated by the time delay block 8.

If the expected Readiness for dialing code is accepted within the specified time, the transmission of the Occupation signal is stopped. On command from block 6 of the programs and the control through block 5 of information input-output, that transmitter is turned off.

unit 1 transceivers, which gave a 1600 Hz signal to the incoming set of AMTs. In response to the termination of the signal, the test of the verified AMTs should respond with the termination of the signal Ready for dialing code. The termination of the signal from the tested AMTS is recorded by the receiver of the two-frequency signaling system 1 of the transceiver unit 1 and, after its scanning, is transmitted to the unit 6 of the control and monitoring programs. Next, the address information starts.

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abhhhhh). The address information is provided by the signal bursts with a frequency F in a decade code.

Upon a command from block 6 of the programs and control, the signal transmitter of block 1 of transceivers operating at a frequency of 1200 Hz is activated. The impulse, pause and inter-burst interval are formed by

5 block 8 time lag. According to the address information obtained, the j-ro outgoing set is occupied. When j-rb outgoing set is occupied by SLM through switch 4

0 receiver unit 2 transceivers of signals of physical lines SLM captures the arrival of the signal Occupation by changing the potentials along the wires a, b, c. The receiver, having recorded the arrival of the Occupation signal, sends the information via the I / O unit to the block 6 of programs and controls via the SLM. In block 6 of the programs and controls, the validation of the received signal is checked and correctly - the transition to the next stage. Thus, stage by stage, all moments of the response of the station equipment to environmental signals are checked.

In the process of checking the correctness of the reaction AMTS. control signals and address information of that peripheral device (PU) of transceiver units 1–3, time delay block 8, switch 4 where the control command is to be sent and from which to receive information arrive at the environmental signals from block 6 of programs and control.

The PU address is recorded in the register block 9 (Fig. 2), from the output of which is fed to the display unit 11 for visual monitoring of the correctness of the address output and to the decoder 12 for selecting the PU. The block of 10 counters serves to count the cycles of operation of the block of 6 programs and controls. The block 10 of the counters causes the enable signal to write the address of the PU to the block 9 of registers and the signal to select the Receive or Transmit mode to the decoder 12 to select the PU. The counter unit 10 carries out the counting of information receiving cycles and inserts a reception enable signal to the receiving switch 13.

A decoder 12 for selecting a control unit on receipt of control address registers from control unit 9 at the time of receipt of a signal from counter unit 10 sends an operation code (Enable, Disable) and the address to the corresponding control unit.

The receive switch 13, at the moment the signal arrives from the counter block, commutes the PU group to the input of the program and control block 6.

Unit 1 transceivers 1 operates as follows.

The address information of the control unit comes from information input / output unit 5 to decoder unit 16 (Fig. 4). After decryption, the address is stored in memory unit -17, which then supplies the appropriate signal to key unit 18. Frequency signals from the driver 7 of the interaction signals are constantly fed to the second inputs of the 18 key block.

The output of the key block 18 is connected to those frequency signals whose addresses are received from the information input / output block 5 and are fed to the filter block 19, which extract from a sequence of square harmonic pulses with defined frequencies or beats of two frequencies. From the outputs of the filter unit 19, through the switch 4 (Fig. 1), the signals are transmitted to the inputs of the LC AMTs.

At the input of the signal receivers of the signaling signal transceiver unit 1, there is a block of receive bandpass filters 20, which have high quality and are characterized by good adjustment parameters. Next, the filtered frequency signal passes through the harmonic signal converter 21 to a discrete one and goes to the buffer unit 22, from the output of which is fed to the information input / output unit 5 (Fig. 1).

Unit 2 transceivers of the signal of physical lines ZSL and SMP (Fig. 5)

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provides reception and transmission of linear signals and control signals, and (from) LK of physical lines of the local telephone network.

The commands from block 6 of the programs and the control through the block 5 input-output information (figure 1) signals are received (figure 5) to the address decoder 23 and the memory setting element 25. The decoder 23 recognizes the signal and transmits it for storage in the memory unit 24. The memory unit 24 includes the corresponding relays in the transmission relay unit 26, through the contacts of which the signals are transmitted through the switch 4

(figure 1) on the LC of physical lines AMTS.

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Response signals from the LC of the physical line of the AMTS through the switch 4 to the receive and input-output I / O switch 4

Uninterrupted by block 27 are assigned to formation block 5 (FIG. 1).

Transceiver unit signals. condensed lines (Fig.6) provides for the reception and transmission of linear signals and control signals from the LC of condensed lines. The operation of this unit is similar in function to the operation of the unit 2 transceivers of signals of physical lines, only the signals transmitted to the LC of compressed lines through switch 4 are different. On commands from block 6 programs and control through block 5 input-output information signals

5 is received (Fig. 6) to the decoder 29 of the address of the signal transmitters and through the memory setting element 28 to the memory block 30, which is preset to the initial state 0. The decoder 29 recognizes the signal and transmits it to the memory unit 30 for storing:. The memory unit 30 includes a signal transmitter 31, which, via switch 4 (Fig. 1), pos5, blunt on the LC of the compressed AMTS lines.

The response signals from the automatic telephone station through the switch 4 (FIG. 1) are received at the signal receiver 32 (FIG. 6), which forms the corresponding commands in the information input / output unit 5. Switch 4 provides an automatic connection of the device for checking the automatic fluid generator to the required linear AMTS from the group LK.

5 Address to connect a specific input to a certain output (Fig. B) is sent to block 37 of registers, and the code. Enable or Disable operations - on a block of 36 triggers

from block 6 of programs and controls through block 5 input-output information. The signals from the outputs of the block 36 of the flip-flops and the block 37 of the registers provide for the connection of a given path to the block 38 of the electronic matrix.

Claims (8)

1. A device for testing automatic long-distance telephone exchanges containing a program and control unit and a switch, characterized in that, in order to increase control accuracy, a transceiver unit of signals of frequency signaling systems, a unit of transceivers of signals of physical lines, a unit of transceivers of signals of compacted lines and serially connected driver of interaction signals, time delay block and information input / output block, the first output of which is connected to the second input b Time delay lock, the second and third outputs are connected respectively to the first and second inputs of the transceiver unit of signals of frequency signaling systems, transceiver unit of signals of physical lines, transceiver unit of compressed lines and a switch, the first output and the third input of which are, respectively, the output and input of the device, the fourth input and the second output are connected respectively to the first output and the third input of the transceiver unit of signals of frequency signaling systems, the transceiver unit of physical line signals, the second the output of which is connected to the second input of the input / output unit of information, the third and fourth input, and the fourth output are connected respectively to the first, second to passages and the first input unit and a control program, a second output signal shaper reacting connected to the fourth input of the signal frequency transceivers signaling systems. 2. The device according to claim 1, characterized in that the information input / output unit comprises a switch, a decoder and serially connected meter blocks, a register block and a display unit, the input of which is connected to the first input of the decryptor, the second input of which is connected to one of the outputs of the counter block, the other output of which is connected to the first input of the switch, the first, second and third outputs of the decoder are respectively the first, the second and third outputs of the information input / output unit, the first input of which is the third input of the decoder, the BTopisJM input - the second input of the switch, the third input - the input block counters, the fourth input is the second input of the register block, and the fourth output is the output of the switch. 3. The device according to claim 1, characterized in that the interaction signal shaper consists of a series-connected master oscillator and a divider unit, the first and second outputs of which are the first and second outputs driver signal interaction. 4. The device according to p. 1, O T L and 0 five 0 five 0 five The signal transceiver unit of frequency signaling systems consists of a serially connected decoder unit, a memory unit, a key unit and a filter unit and a serially connected bandpass filter unit, a harmonic-to-discrete converter and a buffer unit, the output of the filter unit being the first the output of the transceiver unit of the signals of the frequency signaling systems, the second output of which is the output of the buffer unit, the first and second inputs are corresponding continuously a first and second input block decoders, the third input - input of bandpass filter unit, and fourth input - the other input key unit. 5. An apparatus according to claim 1, characterized in that the transceiver unit of physical line signals consists of a receive relay unit, a memory installation element and a serially connected decoder, a memory unit and a transmission relay unit whose output is the first output of the transceiver unit of physical signals lines, the second output is the output of the receiving relay unit, the first and second inputs are the first and second inputs of the decoders, respectively, and the third input is the input of the receiving relay unit, and the second input of the decoder through the setting element m tee is connected to another input of the memory unit. 6, the apparatus according to claim 1, characterized in that the block of transceivers of signals of compressed lines consists of a receiver of signals and. the memory installation element and the series-connected decoder, the memory block and the signal transmitter,. the output of which is the first output of the transceiver unit of condensed lines, the second output is the output of the signal receiver, the first and second inputs — the first and second inputs of the decoders, respectively, the third input — the input of the signals receiver, the first input of the decoder is connected to the other through the memory setting element memory block input. ten 35443810. 7. The device according to claim 1, characterized in that the time delay block consists of series-connected frequency dividers, a switch and a chopper, the output of which is the first output of the delay block, time, the first input of which is the input of the frequency dividers block, and the second input is another input of the switch. 8. The device in accordance with claim 1, 1 and 2, so that the switch consists of a series-connected trigger block, a register block and an electronic matrix block, the second input of which is connected to another output of the trigger block, the input of which is the first input of the switch, the second whose input is; a; the other input of the register block, the first and second outputs, and the third and fourth inputs are the first and second outputs, respectively. 20 25 moves, as well as the third and fourth inputs of the switch. : F : yy 21 20 Figm FIG. 2 ф.З 3 23 klT F 2k .five Well Fig7 u Ljh Jff u i / a6