RU205935U1 - Subscriber device switching device - Google Patents

Abstract

The utility model relates to switching systems and can be used in telephone communication systems of complexes and systems for various purposes. The technical result of the utility model, which consists in improving the technical characteristics of the device, while reducing the overall and weight characteristics, is achieved due to the fact that a device for connecting with external subscriber devices (WAU) (1 ), consisting of a series-connected device for connecting to a VAC via 4-wire voice frequency (PM) lines (1.1), a device for connecting to a VAC for long-distance communication via 4-wire PM lines (1.2), a device for connecting to a VAC via 2-wire PM lines (1.3) and devices for connecting to the WAU of a mobile communication node (CCP) (1.4), and the connections of the listed devices are bidirectional. In this case, the control unit (2) is made on the basis of the central processor (2.1) and the switch (2.2). The switching device of subscriber devices provides higher reliability, better weight and overall characteristics, less error probability, a higher degree of protection against spurious electromagnetic interference, and an increase in the number of subscribers due to the use of Ethernet technology. At the same time, switching of up to 38 subscribers is provided, for eighteen of them connection via two- or four-wire voice frequency channels is provided. 7 ill.

Description

Subscriber device switching device (UCAU) refers to switching systems and can be used in voice information exchange systems.

Known subscriber communication terminal (application No. 98109147/09 from 19.05.1998), the disadvantage of which is the low level of functionality of this communication terminal.

Known manual telephone exchange of medium capacity P-194M1, described in the book "Military switching systems and telephony", ed. L.P. Shcherbina, Leningrad, 1990, pp. 223-228, the disadvantages of which are the low level of functional capabilities, low reliability of the transmission of speech information in the presence of parasitic electromagnetic interference.

Known telephone switch, described in the patent of the Russian Federation No. 2380851 H04M 3/56, the disadvantage of which is a low level of functionality, low reliability of the transmission of speech information in the presence of parasitic electromagnetic interference.

Known subscriber complex for the control point, described in the patent of the Russian Federation No. 118815, H04M 3/06, the disadvantages of which are the low level of functionality.

Known subscriber complex for the command post, described in the patent of the Russian Federation No. 119551, H04M 3/06, the disadvantages of which are the low level of functionality.

The closest analogue in technical essence to the proposed one is a cordless type cross-commutation device described in the book "Military switching systems and telephony", ed. L.P. Shcherbina, Leningrad, 1990, pp. 250 - 253, taken as a prototype.

An enlarged block diagram of the prototype device is shown in Fig. 1, where it is indicated:

1 - commutation field (KP);

2 - control device (UU);

3 - cross-country operator's console.

The prototype device contains a switching field 1, the first output of which is connected to the first input of the control device 2, the first output of the control device 2 is connected to the first input of the switching field 1, the second output of the control device 2 is connected to the input of the operator's console 3, the output of the operator's console 3 connected to the second input of the control device 2. Inputs-outputs from the first to the thirtieth of the switching field 1 are four-wire channels of voice frequency (PM); inputs-outputs from thirty-first to sixtieth of switching field 1 are four-wire connection lines with terminal control rooms; inputs-outputs from the sixty-first to the eightieth of the commutation field 1 are five-wire transmission lines; the eighty-first to eighty-eighth inputs / outputs of switching field 1 are lines that form up to four backhaul connections.

The prototype device works as follows.

Switching field 1 is a rectangular matrix, in the vertical of which 30 lines are connected to the terminal control rooms, 10 transmission lines of channels and 4 transit sets of extenders included in 8 verticals, and in the horizontal - 30 channels and 10 transmission lines.

The control device 2 is designed to control the switching field 1 in accordance with the address information received from the cross-country operator.

The operator's console of the cross-section 3 is intended for entering address and command information into the control unit 2, displaying the status of channels and lines, as well as for connecting intercom-calling devices, intercom-test devices and measuring devices.

The disadvantages of the prototype device are significant weight and dimensional characteristics, low reliability of the transmission of speech information in the presence of parasitic electromagnetic interference.

The task is to improve the technical characteristics of the device, while reducing the overall and weight characteristics.

To solve this problem, a device for connecting to external subscriber devices (WAU) is introduced into the switching device of subscriber devices, containing a control device, according to the utility model, consisting of a series-connected device for connecting with a WAU via 4-wire tone frequency (PM) lines, a connection device with WAU for long-distance communication via 4-wire PM lines, devices for connecting to the WAU over 2-wire PM lines and devices for connecting to the WAU of a mobile communication center (CCP), and the connections of the listed devices are bidirectional; the output-input of the control device is connected to the input-output of the device for connecting with the WAU, which is the input-output of the device for connecting with the WAU via 4-wire PM lines, the outputs-inputs of which from the second to the seventh are the outputs-inputs from the first to the sixth device for connecting with the WAC ; the outputs-inputs from the second to the seventh device for connecting with the WAU of long-distance communication via 4-wire PM lines are the outputs-inputs from the seventh to the twelfth device for connecting with the WAU; outputs-inputs from the second to the seventh of the device for connecting with the WAU on 2-wire PM lines are the outputs-inputs from the thirteenth to the eighteenth of the device for connecting with the WAU; the output-input of the device for connecting with the WAU CCP is the nineteenth output-input of the device for connecting with the WAU, and the outputs-inputs from the first to the nineteenth of the device for connecting with the WAU 1 are the corresponding outputs-inputs of the switching device of the subscriber devices; the control device contains a central processor (CPU), the output-input of which is connected to the eleventh input-output of the switch, the output-input of which is the output-input of the control device, the inputs-outputs of the switch from the first to the tenth are the corresponding inputs-outputs of the control device, in addition, the inputs-outputs of the control device from the first to the sixth are corresponding to the first to the sixth inputs-outputs of the device and are designed to connect the corresponding subscriber consoles via the Ethernet interface; the seventh input-output of the control device is the seventh input-output of the device and is intended for connection with a voice communication device via the Ethernet interface; the eighth input-output of the control device is the eighth input-output of the device and is intended for connection with the control device and interfacing via the Ethernet interface; the ninth input-output of the control device is the ninth input-output of the device and is designed to connect the computing complex of the device location object via the Ethernet interface; the tenth input-output of the control device is the tenth input-output of the device and is used to connect with external subscriber devices of the mobile communication center via the Ethernet interface.

The block diagram of the subscriber unit switching device is shown in Fig. 2, where it is indicated:

1 - device for connecting with external subscriber devices (WAU);

1.1 - a device for connecting to the VAC via 4-wire voice frequency (PM) lines;

1.2 - device for connection with long-distance VAC over 4-wire PM lines;

1.3 - device for connecting to the VAC via 2-wire PM lines;

1.4-device for connecting to the WAU of the mobile communication center (CCP) via the E1 interface;

2 - control unit (UU).

The proposed device contains a series-connected control device 2 and a device for connecting to a VAC 1, consisting of a series-connected device for connecting to a VAC via 4-wire PM1.1 lines, a device for connecting to a VAC for long-distance communication via 4-wire PM1.2 lines, a device for connecting to WAU over 2-wire PM1.3 lines and devices for connecting to the WAU of a mobile communication node over the E1 interface 1.4. Moreover, the connections of the listed devices 1.1-1.4 are bidirectional. The input-output of the device for connecting to the WAU via 4-wire lines PM 1.1 is the input-output of the device for connecting to the WAU 1. Outputs-inputs from the first to the nineteenth of the device for connecting to the WAU 1 are from the first to the nineteenth output-inputs of the switching device of subscriber devices.

The inputs-outputs of the control device 2 from the first to the sixth are corresponding to the first to the sixth inputs-outputs of the device and are designed to connect the corresponding subscriber consoles via the Ethernet interface (not shown in Fig. 2);

the seventh input-output of the control device 2 is the seventh input-output of the device and is intended for connection with a voice communication device via the Ethernet interface (not shown in Fig. 2);

the eighth input-output of the control device 2 is the eighth input-output of the device and is intended for connection with the control device and interface via the Ethernet interface (not shown in Fig. 2);

the ninth input-output of the control device 2 is the ninth input-output of the device and is intended to connect the computing complex of the object for placing the device via the Ethernet interface (not shown in Fig. 2);

the tenth input-output of the control device 2 is the tenth input-output of the device and is used to connect with external subscriber devices of the mobile communication node via the Ethernet interface (not shown in Fig. 2).

The block diagram of the control device 2 is shown in Fig. 3, where it is indicated:

2.1 - central processing unit (CPU);

2.2 - switch.

The control unit 2 contains a CPU 2.1, the output-input of which is connected to the eleventh input-output of the switch 2.2, the output-input of which is the output-input of the control unit 2. The inputs-outputs of the switch 2.2 from the first to the tenth are the corresponding inputs-outputs of the control unit 2.

The block diagram of the device for connecting with the VAC via 4-wire PM 1.1 lines is shown in Fig. 4, where it is indicated:

1.1.1 - switch;

1.1.2 - digital signal processor (DSP);

1.1.3.1-1.1.3.6 - from the first to the sixth codecs, respectively.

The device for connecting with the VAC via 4-wire lines PM 1.1 contains a switch 1.1.1, the input-output of which is the input-output of the connection device 1.1, the first output-input of the switch 2.1 is the first output-input of the connection device 1.1. The second output-input of the switch 1.1.1 is connected to the input-output of the DSP 1.1.2, the output-input of which is connected to the inputs-outputs from the first 1.1.3.1 to the sixth 1.1.3.6 codecs. In this case, the output-input of the third codec 1.1.3.3 is the second output-input of the connection device 1.1, the output-input of the second codec 1.1.3.2 is the third output-input of the device 1.1; the output-input of the first codec 1.1.3.1 is the fourth output-input of the device 1.1; the output-input of the sixth codec 1.1.3.6 is the fifth output-input of the device 1.1; the output-input of the fifth codec 1.1.3.5 is the sixth output-input of the device 1.1; output-input of the fourth codec 1.1.3.4 is the seventh output-input of device 1.1.

In this case, the outputs-inputs from the second to the seventh of the connection device 1.1 are the outputs-inputs from the first to the sixth device for connecting with the WAU 1.

A block diagram of a device for connecting with a long-distance VAC via 4-wire PM 1.2 lines is shown in Fig. 5, where it is indicated:

1.2.1 - switch;

1.2.2 - DSP;

1.2.3.1-1.2.3.6 - from the first to the sixth codecs, respectively.

The device for connecting to the WAU for long-distance communication via 4-wire lines PM 1.2 contains a switch 1.2.1, the input-output of which is the input-output of the connection device 1.2, the first output-input of the switch 1.2.1 is the first output-input of the connection device 1.2. The second output-input of the switch 1.2.1 is connected to the input-output of the DSP 1.2.2, the output-input of which is connected to the inputs-outputs from the first 1.2.3.1 to the sixth codecs 1.2.3.6. In this case, the output-input of the third codec 1.2.3.3 is the second output-input of the connection device 1.2, the output-input of the second codec 1.2.3.2 is the third output-input of the device 1.2; the output-input of the first codec 1.2.3.1 is the fourth output-input of the device 1.2; the output-input of the sixth codec 1.2.3.6 is the fifth output-input of the device 1.2; the output-input of the fifth codec 1.2.3.5 is the sixth output-input of the device 1.2; output-input of the fourth codec 1.2.3.4 is the seventh output-input of device 1.2.

In this case, the outputs-inputs from the second to the seventh of the connection device 1.2 are the outputs-inputs from the seventh to the twelfth of the device for connecting with WAU 1.

The block diagram of the device for connecting with the VAC via 2-wire lines PM 1.3 is shown in Fig. 6, where it is indicated:

1.3.1 - switch;

1.3.2 - DSP;

1.3.3.1-1.3.3.6 - from the first to the sixth codecs, respectively.

The device for connecting to the VAC via 2-wire lines PM 1.3 contains a switch 1.3.1, the input-output of which is the input-output of the connection device 1.3, the first output-input of the switch 1.3.1 is the first output-input of the connection device 1.3. The second output-input of the switch 1.3.1 is connected to the input-output of the DSP 1.3.2, the output-input of which is connected to the inputs-outputs from the first 1.3.3.1 to the sixth codecs 1.3.3.6. In this case, the output-input of the third codec 1.3.3.3 is the second output-input of the connection device 1.3, the output-input of the second codec 1.3.3.2 is the third output-input of the device 1.3; the output-input of the first codec 1.3.3.1 is the fourth output-input of the device 1.3; output-input of the sixth codec 1.3.3.6 is the fifth output-input of device 1.3; output-input of the fifth codec 1.3.3.5 is the sixth output-input of device 1.3; output-input of the fourth codec 1.3.3.4 is the seventh output-input of device 1.3.

In this case, the outputs-inputs from the second to the seventh of the connection device 1.3 are the outputs-inputs from the thirteenth to the eighteenth of the device for connecting with WAU 1.

The block diagram of the connection device with the VAC CUS 1.4 is shown in Fig. 7, where it is indicated:

1.4.1 - switch;

1.4.2 - DSP;

1.4.3 - transceiver E1.

The device for connecting with the VAU PUS 1.4 contains a switch 1.4.1, the input-output of which is the input-output of the connection device 1.4. The output-input of the switch 1.4.1 is connected to the input-output of the DSP 1.4.2, the output-input of which is connected to the input-output of the transceiver E11.4.3, the output-input of the transceiver E1 1.4.3 is the output-input of the device for connecting with the WAU PUS 1.4.

In this case, the output-input of the connection device 1.4 is the nineteenth output-input of the connection device with WAU 1.

The proposed device works as follows.

The switching device of subscriber devices (UCAU) is intended for operation at objects and is an amplifier-switching device that provides all the subscribers of the object with internal communication and the output of each of the subscribers to external means of wired communication.

UKAU provides connection of up to six subscriber consoles via the Ethernet interface, transmission of voice information to six long-distance subscribers via four-wire PM lines, six external subscriber devices that are connected via four-wire PM lines, six external subscriber devices that are connected via two-wire PM lines.

The exchange of voice and control information between all devices included in the UCAU is carried out via the Ethernet interface corresponding to the IEEEStd 802.3-2002 standard.

Control device 2 operates as follows.

The 2.1 switch Ethernet microcircuit operates under the 2.1 CPU, which provides switching between the 2.2 switch operating modes and sets the priorities for packet processing. In addition, CPU 2.1 stores a database of connected endpoints, manages requests to connect to endpoints, and resolves conflicts when users access shared resources.

Switch 2.2, included in control unit 2, is made on an Ethernet chip, which provides connection of the following terminal devices:

six subscriber consoles;

voice communication device;

control and interface device;

computer complex (VC) of the accommodation facility;

external subscriber devices of the mobile communication center (CCP).

Packets with voice data are received via the Ethernet network to the first - sixth inputs-outputs of switch 2.2 from subscriber consoles, to the seventh input-output of switch 2.2 - from a voice communication device, to the eighth input-output of switch 2.2 - from a control and interface device of a communication device, to the ninth input-output of the switch 2.2 - from the computing complex of the object of placing the communication facility, to the tenth input-output of the switch 2.2 - from external subscriber devices of the mobile communication center.

Depending on the address specified in the Ethernet packet header, switch 2.2 switches the incoming packet to one of the devices connected to it:

device for connecting to VAC via 4-wire PM 1.1 lines;

device for connection with long-distance communication WAU via 4-wire PM 1.2 lines;

device for connection with VAC via 2-wire PM 1.3 lines;

device for connection with WAU PUS 1.4,

or transfers them to the CPU 2.1 of the control unit 2.

CPU 2.1, based on information received from the subscriber console or from other external devices, checks the availability of the requested communication line.

If the communication line requested by the subscriber of the console or other external devices is busy, CPU 2.1 sends a packet of control information to the console or the corresponding external device with a refusal to establish communication.

If the communication line requested by the subscriber of the console or other external device is free, CPU 2.1 sends:

to a device providing work with this communication line, a command to send a call and establish a connection between the subscriber of the console or other external device and the communication line;

to the control panel or other external device - a command to establish communication between the subscriber of the control panel or other external device and the communication line, as well as the device address and communication line number.

After that, the exchange of voice data occurs between the device and the remote control or other external device directly without the participation of the CPU 2.1.

The device for connecting to the VAC via 4-wire PM 1.1 lines provides the ability to connect up to six VACs via four-wire PM lines.

The main functional units of this device are:

switch 1.1.1 switches packets containing control commands and voice data based on the source and destination Ethernet addresses contained in the Ethernet packet header;

DSP 1.1.2 - ensures the exchange of speech data between the Ethernet network and six connected codecs from the first 1.1.3.1 to the sixth 1.1.3.6, performs the necessary processing of speech information for transmission over PM channels, controls the operation of the codecs from the first 1.1.3.1 to the sixth 1.1. 3.6;

codecs from the first 1.1.3.1 to the sixth 1.1.3.6 convert the received information into analog form and transmit it in the PM lines.

The device for connecting to the long-distance VAC via 4-wire PM 1.2 lines provides the ability to connect up to six VAC via four-wire PM lines.

The main functional units of this device are:

switch 1.2.1 - performs switching of packets containing control commands and voice data, based on the Ethernet addresses of the sender and receiver, contained in the header of the Ethernet packet;

DSP 1.2.2 - ensures the exchange of speech data between the Ethernet network and six connected codecs from the first 1.2.3.1 to the sixth 1.2.3.6, performs the necessary processing of speech information for transmission over PM channels, controls the operation of codecs from the first 1.2.3.1 to the sixth 1.2. 3.6;

codecs from the first 1.2.3.1 to the sixth 1.2.3.6 convert the received information into analog form and transmit it in the PM lines.

The device for connecting to the VAC via 2-wire PM 1.3.1 lines provides the ability to connect up to six VAC via two-wire PM lines.

The main functional units of this device are:

switch 1.3.1 - performs switching of packets containing control commands and voice data, based on the source and destination Ethernet addresses contained in the Ethernet packet header;

DSP 1.3.2 - ensures the exchange of voice data between the Ethernet network and six connected codecs from the first 1.3.3.1 to the sixth 1.3.3.6, performs the necessary processing of speech information for transmission over PM channels, controls the operation of codecs from the first 1.3.3.1 to the sixth 1.3. 3.6;

codecs from the first 1.3.3.1 to the sixth 1.3.3.6 convert the received information into analog form and transmit it in the PM lines.

The device for connecting with the VAU PUS 1.4 provides the ability to connect up to twenty VAC via the E1 line.

The main functional units of this device are:

Switch 1.4.1 switches packets containing control commands and voice data based on the source and destination Ethernet addresses contained in the Ethernet packet header;

DSP 1.4.2 - provides the exchange of voice data between the Ethernet network and the E11.4.3 transceiver.

The E11.4.3 transceiver under the control of DSP 1.4.2 ensures the conversion of the received voice data for transmission over the E1 line.

Packets with voice data fall on DSP 1.1.2-1.4.2 of devices for connecting with VAC from 1 to 4, respectively.

For example, in a device for connecting with a VAC over 4-wire PM 1.1 lines, DSP 1.1.2, based on the data contained in the packet header, sends the containing speech data to one of the corresponding codecs from the first 1.1.3.1 to the sixth 1.1.3.6. From the output of one of the codecs from the first 1.1.3.1 to the sixth 1.1.3.6, the speech data converted into analog form is transmitted to the connected communication line.

Speech data from the communication line goes to the codecs from the first 1.1.3.1 to the sixth 1.1.3.6, where they are converted into digital form. From the outputs of the codecs from the first 1.1.3.1 to the sixth 1.1.3.6, the speech data is fed to the DSP 1.1.2, which ensures their accumulation within 10 ms. DSP 1.1.2 forms an Ethernet packet from the accumulated voice data and transmits it to the console or other external device, the subscriber of which uses this communication line.

In other devices for connecting to a long-distance VAC via 4-wire PM 1.2 lines, connecting to a VAC via 2-wire PM 1.3 lines, the work is carried out in a similar way.

In the device for connecting with the VAU PUS 1.4, the switch 1.4.1 switches packets containing control commands and voice data based on the Ethernet addresses of the sender and receiver contained in the Ethernet packet header. DSP 1.4.2 provides the exchange of voice data between the Ethernet network and the E11.4.3 transceiver. The E11.4.3 transceiver under the control of DSP 1.4.2 ensures the conversion of the received voice data for transmission over the E1 line.

Switch 2.2 can be implemented, for example, on the KS8999 microcircuit f. Micrel.

Switches 1.1.1, 1.2.1, 1.3.1, 1.4.1 can be implemented, for example, on the KSZ8842 microcircuit f. Micrel.

As a CPU 2.1, for example, an AT91SAM9XE512 microcircuit f can be used. Atmel.

DSP 1.1.2, 1.2.2, 1.3.2, 1.4.2 can be performed, for example, on the TMS320VC5509 microcircuit f. TexasInstruments.

Codecs 1.1.3.1-1.1.3.6, 1.2.3.1-1.2.3.6, 1.3.3.1-1.3.3.6 can be implemented, for example, on the TLV320AIC14 microcircuit f. TexasInstruments.

The E11.4.3 transceiver can be made, for example, on the MT9076BB1 microcircuit f. Microsemi.

This element base has minimum weight and size characteristics and minimum power consumption.

Thus, in comparison with the prototype, the proposed switching device of subscriber devices provides higher reliability, better weight and overall characteristics, less error probability, and a higher degree of protection against parasitic electromagnetic interference due to the use of Ethernet technology. At the same time, switching of up to 38 subscribers is provided, of which eighteen - via two-wire or four-wire voice frequency channels.

Claims (1)

A switching device for subscriber devices, containing a control device, characterized in that a device for connecting with external subscriber devices (WAU) is introduced, consisting of a series-connected device for connecting to a WAU via 4-wire tone frequency (PM) lines, a device for connecting to a WAU for long-distance communication 4-wire PM lines, devices for connecting to the WAU via 2-wire PM lines and devices for connecting to the WAU of a mobile communication unit (CCP), and the connections of the listed devices are bidirectional; the output-input of the control device is connected to the input-output of the device for connecting with the WAU, which is the input-output of the device for connecting with the WAU via 4-wire PM lines, the outputs-inputs of which from the second to the seventh are the outputs-inputs from the first to the sixth device for connecting with the WAC ; the outputs-inputs from the second to the seventh device for connecting with the WAU of long-distance communication via 4-wire PM lines are the outputs-inputs from the seventh to the twelfth device for connecting with the WAU; outputs-inputs from the second to the seventh of the device for connecting with the WAU on 2-wire PM lines are the outputs-inputs from the thirteenth to the eighteenth of the device for connecting with the WAU; the output-input of the device for connecting with the WAU CCP is the nineteenth output-input of the device for connecting with the WAU, and the outputs-inputs from the first to the nineteenth of the device for connecting with the WAU are the corresponding outputs-inputs of the switching device of subscriber devices; in addition, the control device contains a central processing unit (CPU), the output-input of which is connected to the eleventh input-output of the switch, the output-input of which is the output-input of the control device, the inputs-outputs of the switch from the first to the tenth are the corresponding inputs-outputs of the control device , in addition, the inputs-outputs of the control device from the first to the sixth are corresponding to the first to the sixth input-outputs of the device and are designed to connect the corresponding subscriber consoles via the Ethernet interface; the seventh input-output of the control device is the seventh input-output of the device and is intended for connection with a voice communication device via the Ethernet interface; the eighth input-output of the control device is the eighth input-output of the device and is intended for connection with the control device and interfacing via the Ethernet interface; the ninth input-output of the control device is the ninth input-output of the device and is designed to connect the computing complex of the device location object via the Ethernet interface; the tenth input-output of the control device is the tenth input-output of the device and is used to connect with external subscriber devices of the mobile communication center via the Ethernet interface.

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