RU31892U1 - SWITCHING SYSTEM - Google Patents

Description

Switching System ™ РРр1111Ш111 | И1 | 1 |

The utility model relates to communication technology and is used to build special networks of open, closed (classified) telephone communications and data transfer between mobile and (or) stationary objects.

A known digital switching system 1, comprising subscriber modules, individual station units, a switching unit, a linear signaling unit, a control bus, a marker, a channel state storage unit, a delivery route memory unit, an input-output unit.

A known digital switching system 2, comprising a switching field, a transmit / receive unit, an interaction unit, a system bus, a digital computer, a controller, a multiplexer, a protection unit, a telephone, an operator module.

The lack of analogues is limited functionality due to the lack of elements and nodes in the composition of known systems that allow expanding the functionality.

The closest in essence and scope of the technical solution to the proposed utility model has an extra-early communication and switching equipment 3, containing subscriber panels, a centralized switching and control rack (SCKiU), a four-channel interface and switching device (USK-4K). The structure of the STSKiU includes: a control unit, a switch, a radio network control unit, two operator units.

IPC 7 N04M11 / 00

2003103538

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The well-known apparatus adopted for the prototype has wider functional capabilities than in the indicated analogues, however, it is insufficient to solve the problem posed below, since it does not provide for the integration of several sets of equipment into a single system, automatic telephone communication between subscribers of the same type of system via radio channels in open modes and private communications, connecting subscribers of equipment to subscriber lines of an external automatic telephone exchange, selecting and connecting subscribers to docum devices ntirovaniya telephone and redundancy connection routes with radio subscribers.

These disadvantages of the prototype reduce the likelihood and speed of establishing a connection between subscribers.

The technical task of the proposed utility model is the creation of a multifunctional switching system that will provide reliable and efficient special telephone communication and data transfer.

The problem was solved when creating the proposed utility model with technical results:

-Provided the ability to combine several systems into a single system;

- automatic telephone communication between subscribers within the system and with subscribers of the same type of systems via radio channels in open and closed communication modes is provided;

-the connection of system subscribers to the subscriber lines of an external automatic telephone exchange is provided;

- Provided backup routes for connecting subscribers of the system with subscribers of the same type of systems, moreover, with an automatic transition from the main route to the backup;

- Provided the selection and connection of subscribers to telephone documentation devices;

-configured, tested, diagnosed and displayed the current state of the system.

To achieve the specified technical results in the proposed switching system, an automatic telephone exchange, subscriber panels, channel switch, radio network control module, and a secret communication switch are interconnected

with information inputs and outputs and control channels, a central processor, a central processor control bus, a program and data memory block, a control interface, a temporary switch are introduced into the automatic telephone exchange, while the central processor control bus connects the central processor to the program and data memory block and interface control, and the control interface is connected to subscriber panels, secret communication switch, radio network control module, channel switch, temporary com utatorom and introduced: channel group generator coupled to the control interface control channel group with a time switch inputs and its outputs are intersystem digital channels A, B, and the output B is connected to the output A subsequent switching system; a telephone automation unit connected to a control interface and a temporary switch; an adapter connected to the control interface, a temporary switch and having outputs to the subscriber lines of an external automatic telephone exchange; a personal computer connected to the central processor; and additional information inputs and outputs are connected to the subscriber’s consoles, connected to a classified communications switch that is connected to

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temporary switch and has access to documentation devices.

The proposed utility model is a space-time switching system with centralized program control, in which the equipment is switched and paired with various types of channel-forming means (radio stations with digital, tonal and telegraph channels, wired communication lines with two-, four-wire endings, and subscriber lines of an automatic telephone exchange with pulse and tone dialing), with documentation devices, with life support system, from the device a tour of privacy and data transfer. The central processor performs the functions of controlling the temporary switch and the interaction of the individual functional parts of the system via the bus and the control interface in accordance with the program and the data stored in the program and data memory. The group channel former performs the function of combining several systems into a single system by intersystem digital channels. A telephone automation unit, a radio network control module, a channel switch perform the function of automatic telephone communication between system subscribers and subscribers of the same type of system via radio channels with an automatic transition from the main to the backup routes. The adapter performs the function of connecting the system subscribers to the subscriber lines of an external automatic telephone exchange. The personal computer of the UM PC standard performs the functions of configuring, testing, diagnosing and displaying the current state of the system, entering routing and address information and generating routing and address tables. A personal computer together with a secret communications switch performs the function of

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the choice of subscribers of the system for documenting negotiations and their connection to documenting devices.

The proposed switching system is presented in the drawing in the form of a structural diagram.

The switching system contains 1 subscriber panels (PA), an automatic telephone exchange 2 (PBX), a secret communication switch 3 (CLC), a radio network control module (MURS) 4, a 5-channel switch (CC), a personal computer 6 (PC),

The structure of ATC 2 includes a central processor 7 (CPU), a program and data memory block (BPC) 8, a processor control bus 9, a control interface 10, a temporary switch 11 (VK), a telephone automation unit (BTA) 12, a group channel former 13 (FGK) adapter 14.

MURS 4 has a controller, a controller control bus, a program and data memory block.

A second information path and a switch of information paths are introduced into each PA 1. In KZS 3, a switching board and an adapter for interfacing with a documenting device are introduced.

The set of ATS 2, KZS 3, MURS 4, made in the form of separate structures, is a functional analogue of the rack SCKiU prototype 3, and US 5 is a functional analogue of the rack USK-4K.

The switching system works as follows;

In PC 6, the switching system control program is loaded and the initial data is entered: the number of the switching system in the communication system, the configuration of the switching system (the number of connected PA 1, radio stations and channels of the data transmission equipment, test mode), route-address tables, initial data for the PA 1

(subscriber priority level, permission to work in various modes by channel-forming means, connection to a documentation device), radio data (values of radio frequencies and numbers of pre-prepared frequencies for radio stations), address information (system’s own addresses in radio networks and directions, numbers of subscribers of radio networks and directions, numbers of subscriber lines of an external telephone exchange), tekush; its time and key for simulating encoding of ringing signals in MURS 4, configuration of connecting data transmission equipment to CC 5,

The source data is recorded in the BCHD 8 of the CPU 7, After the initial data are recorded or when the power is turned on, the CPU 7 automatically initializes, in which the initial data from the BJCS 8 of the CPU 7 through the processor control bus 9, the control interface 10 are sent to the control channels 1 through PA, KZS 3, MURS 4, KK 5.

Consider establishing a connection between subscribers of the PA 1 system.

The caller initiates the call. The rise of the tube is determined by the controller PA 1, which in response to the command "Request from CPU 7 transmits the command" The tube is up.

CPU 7, having received the command from PA 1, enters it into the BAPD 8 and transmits it to PC 6 to display the status of PA 1 on the monitor. At the same time, the CPU 7 transmits a command to the BTA 12 and BK 11, as a result of which the signal “Station response. The PA 1 controller provides control of an indicator that displays the status of the handset. After receiving the signal “Station response, the subscriber dials the first digit of the number on the keypad of the remote control, which is displayed on the indicator and transmitted via the control channel to CPU 7. CPU 7 records the first digit of the number in BPPT 8, gives a command to BTA 12 to remove the signal“ Response

station, translates the dialed number into PC 6 for display on the monitor. Similarly, the input and display of the subsequent digits of the number is carried out.

CPU 7 determines the end of dialing and analyzes it in order to determine whether the called subscriber belongs to this system or to interacting systems and the state of the called subscriber.

In the event that the subscriber is free and belongs to this system, the CPU 7 instructs the called subscriber to turn on the display and a command containing the number of the calling subscriber. After receiving the commands, the remote controller turns on the light indication of the call, displays the number of the caller on the indicator, turns on the acoustic signaling of the call in the loudspeaker. After lifting the handset by the called party and receiving the appropriate command, CPU 7 sends a command to BTA 12 to remove the call control signal, to the controller of the called PA 1 — the command to take off the light and acoustic signaling of the call and to display the remote control handset in the raised state, to VK 11 a command is sent to connect the spoken channels of the consoles. After the negotiations are over, the subscribers put the handsets on the remote controls, after which the remote controller sends a command to the CPU 7 that the handset is off-hook.

CPU 7 instructs VK 11 to disconnect the subscriber paths and erases the information in the BCH 8 about the numbers of the subscribers involved in the connection.

All commands that determine the stages of the connection between subscribers and the numbers of subscribers involved in the connection are transmitted by CPU 7 to PC 6 for display on the monitor.

in case the called subscriber is busy, the CPU 7 transmits a command to the BTA 12 and BK 11 to transmit the signal “Busy. After the subscriber hangs up, the controller of the remote control transmits to the CPU 7 the command “Handset On, CPU 7 sends to the BTA 12 and VK 11 commands to remove the signal“ Busy and disconnect the BTA 12 from the receiving circuits of PA 1,

When establishing a connection between subscriber PA 1 and the subscriber of the external exchange, the caller on PA 1 dials the adapter number 14. The number is transmitted to the CPU 7 via the control channel, which determines the possibility of the subscriber to go to the external exchange, sends the adapter connection command 14 to external PBX (loopback circuit). VK NTA BTA 12, on instructions from CPU 7, provides the signal “Station response to subscriber PA 1, after which the subscriber dials the subscriber number of the external exchange. The number is transmitted by CPU 7 to adapter 14, where it is converted into tone or pulse transmissions and transmitted to an external exchange. In the direction of the subscriber PA 1 from the external telephone exchange receives the signal "Control the call. After the subscriber lifts the handset of the external telephone exchange, the signal “Call control” is removed and communication between the subscribers is established.

After the conversation ends, subscriber PA 1 hangs up, CPU 7 transfers the voice path of subscriber PA 1 to VK. The initial state, adapter 14 sends an external PBX signal “End (loop open).

Consider the interaction between the components of the system when establishing communication between subscribers of the radio network.

Subscriber PA 1 picks up the phone and after receiving the signal “Station response, dials the number of the called subscriber. The number on the control channel is transmitted to the CPU 7, which determines the connection route of the subscribers from the routing table stored in the BAPD 8.

gives a command on the control channel to VK 11 to connect the subscriber's speech path to the corresponding input of KK 5, transmits a command to KK 5 on the control channel to turn on the radio station for transmission, transmits to MURS 4 a command with the numbers of the calling and called subscribers.

MURS 4 converts the received numbers in accordance with the initial data into network numbers, after which the numbers are encoded with a group cyclic code with imitation protection and the call message is transmitted through KK 5 and the connected radio station to the radio network. After the end of the transmission of the ringing message, MURS 4 transmits a command to complete the transmission through the control channel of the CPU 7. CPU 7 transmits a command to QC 5 to transfer the radio station to reception. After receiving and decoding the ringing message, MURS 4 of the called subscriber transmits a command containing the subscriber’s number via the control channel to CPU 7, which identifies the called subscriber and sends a command to VK 11 to connect the voice path of PA 1 to the corresponding input of CC 5, to PA 1 command “Call, on MURS 4 a receipt for a call, on QC 5 a command to turn on a radio station to transmit a receipt. After receiving the receipt, the CPU 7 of the system, the subscriber of which has sent the ringing message, transmits via the control channel to PA 1 a command to the controller to generate a signal “Control the call by radio station signaling the passage of the call through the communication channel. After lifting the handset, the called subscriber provides the exchange of voice information between subscribers.

In the process of exchanging voice information over half-duplex radio stations, subscribers control the reception / transmission mode of radio stations using the PA 1 handset tangents. The position of the tangents is analyzed by the PA 1 controller, which

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the control channel transmits the command “Tangent pressed (“ Tangent pressed) to CPU 7, which, in accordance with the received command, transmits commands on the control channel to QC 5 to transfer the radio station from reception to transmission and vice versa.

If, within a specified time interval after sending a ringing message, the CPU 7 of the system that transferred the call does not receive a receipt for receiving a ringing message, the routing and address tables are accessed to determine the availability of backup transmission routes and, if any, repeats the procedure for sending a ringing message on the backup route.

If there is no backup route or a message is received in response to the ringing message that the subscriber is busy, then CPU 7 transmits a command to the subscriber “Busy by radio station” to the subscriber 1 through the control channel.

To complete the communication, the subscriber of PA 1 must put the receiver on the console, after which CPU 7 gives commands to VK 11 and PA 1 to establish the initial state of the conversation path and to display on the PA 1 indicator.

When establishing communication between subscribers of the same type of systems through a digital intersystem channel, subscriber PA 1 dials the number of the called subscriber. The number on the control channel is transmitted to CPU 7, which checks the permission to work on the digital channel, then transmits the numbers of the called and called subscribers to FGK 13 and the command to VK 11 to connect the conversation path PA 1 to the corresponding channel of FGK 13. The numbers of the called and called subscribers are transmitted via the control channel of the 2048 kbit / s stream to the FGC 13 of the required system and then to its CPU 7. The CPU 7 of the same type of system identifies the subscriber, sends him a call command through the control channel and transmits the BK 11 and BTA 12 command to send echevomu path

to the caller of the signal “Call control. After the tube is picked up by the called subscriber, the CPU 7 of the same system disconnects the call control signal and connects the talk path PA 1 of the called subscriber to the corresponding channel of the 2048 kbit / s stream. After the end of the conversation, the subscribers lower the handsets, the CPU 7 of each system translates the voice paths to their original state.

Work in the closed (classified) telephone communication mode.

After lifting the PA 1 handset, the subscriber, using the function keys, sets the mode of secret communication and dials the number of the called subscriber. Information about the operating mode and subscriber number is transmitted by the PA 1 controller through the control channel of CPU 7. CPU 7, after receiving the connection request, organizes the sending of a ringing message to the radio network subscriber in accordance with the previously considered algorithm. The call message contains information about the numbers of subscribers and the required mode of operation. After receiving a receipt from the called subscriber’s CPU 7 about the possibility of establishing a connection, the CPU 7 sends a command to the PA 1 controller via the control channel to switch the conversation path from VK 11 to KZS 3, which receives a command to switch the conversation path of PA 1 to the subscriber input of the privacy equipment. Pa KK 5, a command is sent to connect the channel input of the security equipment to the desired radio station, a command is sent to the PA 1 controller to generate a signal for the subscriber to control the call from the radio station. After negotiations, all paths return to their original state.

Consider the documentation of negotiations of subscribers of the PA 1 system.

When operating in open telephone mode, conversational paths of subscribers set during system configuration are connected through a switching field VK 11 to an input connected to KZS 3. In KZS 3, when subscribers are working in open mode, conversational paths are connected to an output intended for connection documenting devices.

When operating in secret communication mode, the conversation paths of the subscribers of PA 1 are connected to the CLC 3, which compares information about the number of the subscriber connected to the security equipment with the initial information about the numbers of subscribers to be documented. If the numbers match, the transit circuit from VK 11 to the documenting device is broken and the conversation path from PA 1 is connected to the documentation device. After negotiations in the secret communication mode are over, the switching of the conversation paths connected to the documentation device in KZS 3 is returned to its original state.

Switching data channels.

The switching of channels of the equipment for transmitting data to channel-forming means is controlled from the keyboard of PC 6. For each channel of the equipment for transmitting data, the type of the selected joint, the type and number of channel-forming means are entered.

Information is transmitted along the control line to CPU 7, where control commands are generated that are transmitted to QC 5.

Testing and diagnostics of the switching system is carried out by the PC 6. In accordance with the control commands, the CPU 7 carries out diagnostics of the entire system or its individual functional parts. Test results are displayed on the PC monitor 6.

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Reception of signals from the life support system.

Upon receipt of a command from the life support system, the CPU 7 transmits a command to the PA 1 controllers to generate an alarm in the loudspeaker and the handset, a command is sent to PC 6 to display a warning message on the monitor.

The combination of several systems into one is carried out by connecting the output B of the previous system with the output A of the subsequent system in series.

Each switching system determines the presence of signals at outputs A, B, If there are no signals at output A and there are signals at output B, the switching system becomes the master, and the rest are slaves. A system united in this way functions synchronously.

The proposed technical solution of the switching system made it possible to expand the list of functional capabilities of the system according to the requirements of its field of application and development trends of similar equipment at the present stage, as well as to ensure high reliability and efficiency indicators of all actions carried out by the system.

Sources of information:

1. Patent RU No. 2127025, IPC 6 N04MZ / 00, bull. No. 6, 1999

2. Patent RU No. 2147160, IPC 7 Ex4Sh / pO, bull. No. 9, 2000

3. "Internal equipment" (..

Technical description, Zaporizhia, 1987. Director of UE “NIISA SH

N.I. Azamatov

Claims (6)

1. A switching system comprising an automatic telephone exchange, subscriber panels, a channel switch, a radio network control module, a secret communications switch that have information inputs and outputs and control channels, characterized in that a central processor and a central processor control bus are introduced into the automatic telephone exchange , a program and data memory block, a control interface, a temporary switch, while the central processor control bus connects the central processor to the memory block gram and a data and control interface, a control interface connected to the subscriber remotes, secure communication switch, a radio network control unit, switch channels, time switch. 2. The system according to claim 1, characterized in that the automatic telephone exchange contains a group channel former that is connected by a control channel to a control interface, a group of inputs with a temporary switch, and its outputs are intersystem digital channels A, B, while output B is connected to output A of the subsequent switching system. 3. The system according to claim 1, characterized in that the automatic telephone exchange contains a telephone automation unit that is connected to a control interface and a temporary switch. 4. The system according to claim 1, characterized in that the automatic telephone exchange contains an adapter that is connected to a control interface, a temporary switch and has outputs to the subscriber lines of an external automatic telephone exchange. 5. The system according to claim 1, characterized in that it contains a personal computer that is connected to a central processor. 6. The system according to claim 5, characterized in that the subscriber desks contain additional information inputs and outputs connected to a classified communications switch that is connected to a temporary switch and has access to documentation devices.