RU14711U1 - DEVICE FOR REPLACING DECADE-STEP AND COORDINATE INSTITUTIONAL AUTOMATIC TELEPHONE STATIONS - Google Patents

Description

Device for replacing decade-step and coordinate office automatic telephone exchanges

This utility model relates to communication technology and can be used to automate communication of small automatic telephone networks.

A device is known (RF patent 2125345, class H04M 9/00, publ. 1999), which expands the subscriber telephone network.

The known device does not provide the possibility of reconstruction and replacement of a decade-step and coordinate institutional exchanges that have exhausted their resources.

The objective of this utility model is to provide the ability to connect subscriber telephones to the steps of group search by replacing the exhausted automatic telephone exchanges (ATS) of the ten-step and coordinate systems.

The technical result consists in expanding the functionality of the device.

The result is achieved by the fact that in the device for replacing decade-step and coordinate institutional exchanges, including a power supply generation unit, configured to generate the required power supply voltage of telephone units, a control and diagnostic unit configured to generate test and control signals for individual units and device nodes, communication units with subscribers, configured to provide communication with individual telephone sets, multiplexer, configured to the ability to separate in time the connections of the given telephone sets and the corresponding communication units with subscribers to work with the device, a common communication bus, configured to exchange signals between nodes and units of the device;

the ability to convert the format of the analog signal and its encoding, signal processing units of the input trunk lines, configured to receive signals from the city telephone exchange and their coding, and signal processing units of the output trunk lines, capable of decoding data from subscribers and transmitting them to the city telephone station, interface unit with subscriber lines of the city telephone exchange, control and diagnostic unit is made with the additional possibility of forming test and control constituent signals for input units, a multiplexer is further configured to time-division connections specified trunk PSTN to work with the device.

A specific, but not limiting of the present utility model embodiment of the device is shown in the drawing, which shows the control and diagnostic unit 1, multiplexer 2, city telephone exchange (GATS) S, common bus 4, subscriber

telephones 5, subscriber communication units 6, subscriber line signal processing units 7, input connecting line signal processing units 8, output connecting line signal processing units 9, unit 10 connecting a subscriber line to a local telephone exchange, unit 1 contains a microcontroller 11, for example , AT 89C51, for testing the operability of all blocks and nodes and generating fault signals, initializing all blocks at the start of control of signals of interaction of the blocks, RAM 12, read-only memory 13, interface node 14, for example, AD 485, for communication with an external computer and the ATC signaling system, multiplexer 2 contains a microcontroller 15 for recognizing requests for outgoing or incoming communication, synchronizing the operation of bus 4, downloading a program to a signal microprocessor 16, for example, ADSP2115, intended for the implementation of switching outgoing signals from subscriber lines to the GATS i

3, from GATS connecting lines to subscriber lines, random access memory 17, read-only memory 18, block 6 contains a handset position sensor 19 (triggers when the voltage drops when the handset is removed from the telephone), overvoltage protection unit 20, divider 21 line voltage, shaper 22 of the inductor signal (bell), shaper 23 of the buzzer signal, block 7 contains a signal microprocessor 24 for recognizing outgoing signals from subscriber lines and converting them into the format o common bus and for selecting from the signal stream of the common bus incoming signals of a given subscriber line (AL) and converting them into a codec-decoder format, random access memory 25, read only memory 26, differential node 27 for converting a two-wire AL to four-wire with direct signal separation and in the opposite direction, the coding-decoding unit 28 (analog-to-digital and digital-to-analog converter), for example, TP 3057, block 8 contains a microcontroller 29 for

recognition of control signals of signal lines (SL), loading a program into a signal microprocessor 30, recognition of control signals from bus 4 and unit 1, control of incoming digital streams, diagnostics of decoding coding units, microprocessor 30 is designed to recognize incoming SL signals and convert them to a common bus format , random access memory 31, read-only memory 32 and encoding-decoding unit 33, block 9 comprises a microcontroller 34 for recognizing control signals of signal lines (SL), loading programs into a signal microprocessor 35, recognition of control signals from bus 4 and block 1, control of outgoing digital streams, diagnostics of decoding coding units, signal microprocessor 35 intended for converting outgoing signals from bus format 4 to encoder-decoder format, random access memory 36, read-only memory 37 , encoding-decoding unit 38. Block 10 contains

a signal microprocessor 39 for recognizing incoming signals from AL GATS and converting them to a common bus format, for selecting signals from a given bus from a common bus signal stream and converting them to an encoder-decoder format, random access memory 40, read-only memory 41, encoder-decoder 42 for analog-to-digital, digital-to-analog, differential node 43 transformations for converting a two-wire AL to a four-wire with separation of signals in the forward and reverse directions. The power supply is not shown in the drawing, but it produces voltages of 5 V and 60 s and a buzzer signal with a frequency of 450 Hz and an inductor signal with a frequency of 25 Hz.

All blocks and nodes of the device are made using standard elements of radio electronics, telephony and computer technology.

The device operates as follows.

The device provides the ability to connect to the GATS via subscriber lines with the organization of local and external communication modes. This is ensured by using block 10, which makes it possible to transfer the device from the local communication mode to the external communication mode and to connect external subscribers by dialing the corresponding GATS numbers. The capacity of the basic version of the device is 256 subscriber ports, 16 ports of incoming communication, 16 ports of outgoing communication, 8 ports of long-distance communication. The device allows for the conversion of signals from subscribers to the common bus format, their processing, the conversion of processed data from the common bus format to the signals of the outgoing GATS trunk lines and the transmission of messages to the city telephone network. Similarly, the reverse procedure is performed. The equipment provides the ability to transfer the device from local mode to external mode and connect external subscribers by dialing the appropriate GATS numbers. This allows you to expand the functionality of the device.

Claims (1)

A device for replacing decade-step and coordinate office automatic telephone exchanges (PBXs), including a power supply generation unit, configured to generate the required power supply ratings of telephone nodes, a control and diagnostic unit, configured to generate test and control signals for individual units and device nodes, communication units with subscribers, configured to provide communication with individual telephone sets, multiplexer, made with the ability to separate in time the connections of the given telephone sets and the corresponding communication units with the subscribers to work with the device, a common communication bus, configured to exchange signals between the nodes and units of the device, characterized in that the processing units of the subscriber line signals are made into it, made with the ability to convert the format of the analog signal and its coding, signal processing units of the input trunk lines, configured to receive signals from the city telephone stations and their coding, and signal processing units of output trunk lines, capable of decoding data from subscribers and transmitting them to the city telephone exchange, interface unit with subscriber lines of the city telephone exchange, control and diagnostic unit is made with the additional possibility of generating test and control signals for of the entered blocks, the multiplexer is made with the additional possibility of dividing in time the connections of the specified connecting lines of the city telephone network to work with the device ystvom.