RU39770U1 - CONCENTRATOR OF SUBSCRIBER LINES "MAK" - Google Patents

Abstract

The utility model relates to the field of telecommunications and can be used to improve the elements of existing automatic telephone networks, in particular, in the telephony of small enterprises and offices. The MAK subscriber line concentrator comprises a control unit including a computer device with a flash card and a memory unit; synchronization unit, which includes interface board controllers, communication fields and communication channels; subscriber unit and power supplies. Together with the interface board controller and communication fields, the control unit can be implemented together as a Consul 2 control board, and the subscriber unit can be implemented as interface cards, such as SLAC30, SLD4, SLI16. Using MAK allows you to create a flexible system that can provide access to both traditional telephony services and broadband data services on a single platform (when organizing subscribers' access to PSTN via 2-wire analogue subscriber lines or using SHDSL technology), and also to provide the possibility of measuring the parameters of subscriber lines included in the Concentrator, to the operating personnel of PSTN. This ensures high reliability of the complex due to dynamic reconfiguration to replace faulty elements (interface modules). When using it, it is possible to achieve equipment performance at the level of 10-20 thousand calls per hour.

Description

The utility model relates to the field of telecommunications and can be used to improve the elements of existing automatic telephone networks, in particular, in the telephony of small enterprises and offices.

Known subscriber line concentrators (US patent N 4317008, 1982, EPO patent N 0103976, 1986, EPO application N 0408530, 1990), designed to connect N subscribers to the corresponding N outputs of an automatic telephone exchange (PBX) via M lines, and N is greater than M (N and M are natural). Hubs include state analyzers of subscribers (telephones), a switch and a control unit, while the switch can be made either as a set of switches or as an M • N matrix, the microprocessor performs the functions of the control unit. The exchange of data on the state of the lines between the hub and the exchange is carried out on an additional line.

A known subscriber line concentrator (USSR AS N 1780196, BI N 45.1982), containing a subscriber unit, a subscriber exchange unit

signals, control unit, switch, cyclic and clock synchronization blocks.

A common drawback of these hubs is that since each of the N subscribers connected to the hub has its own subscriber number, when using the hub as a local telephone exchange in a small enterprise, such as an office, you have to subscribe all N corresponding numbers, which significantly increases the cost of installation of telephones.

Closest to the claimed of known analogues is a subscriber line concentrator (RF patent N 2007989, BI N 3, 1994), containing connecting lines, station block, subscriber lines, subscriber kits, control unit, switch, switch control device, functional unit relay, call signal generator and cord kit.

The disadvantage of the hub was the inability to work with various types of telephone exchanges available in Russia. In addition, the range of opportunities provided to subscribers using hubs of the described design is very limited.

The challenge facing the authors is to develop a subscriber line concentrator with improved operational characteristics, such as an expanded subscriber telephone network, formed on the basis of any type of telephone exchanges operating in Russia and not requiring additional conversion of telephone exchanges, as well as expanding the range of functionality and convenience of the concentrator in use.

This problem was solved by creating a hub, the general scheme of which is shown in figure 1.

The hub, which received the code name "IAC" includes the following elements:

- control unit (UB) 1, which includes a computer device (UK) 2 with a flash card (software keeper) (FC) 3 and a memory unit (PSU) 4;

- switching unit (BC) 5, which includes controllers of interface cards (KIP) 6 and 7, a communication field (KP) 8 and communication channels (KS) 9;

- subscriber unit (AB) 10 containing subscriber kits 11

- power supplies (IP) 12

UB 1 is designed to manage SLAC30 subscriber cards, work along E1 digital paths with various signaling protocols: OKS7, DSS1, V5.1, V5.2. Together with the interface board controller b and communication fields 8, UB 1 can be implemented as a Consul 2 control board.

BC 5 may contain or be made in the form of a cross-board. The subscriber unit 10 together with the controller of the interface cards 7 can be made in the form of interface cards, such as SLAC30, SLD4, SLI16.

The SLAC30 card provides connection of standard analog terminal equipment (telephones, faxes, modems) to subscribers via analog two-wire lines. Each board supports 30 subscriber lines (AL). Two DIN41612 connectors are used for docking with the cross-board: two-row - 64 contacts and three-row - 96 contacts. The board also contains devices for measuring the electrical parameters of these lines and a ring signal generator.

The SHDSL and SLDH8 interface cards allow you to transmit voice and data simultaneously on a 2-wire line. It is used for simultaneous connection of standard analog terminal equipment (or connection of UPATS equipment via E1 lines) and high-speed data transmission equipment.

The digital subscriber interface card SLI16 allows you to connect 8 ISDN subscribers.

The switch operates as follows. The calls arriving at the MAC are received through the E1 interfaces. Signal messages (V5, OKS7, DSS-1) are sent to BU 1 to UK 2 ,. Upon receipt of the signal from the interface in the control unit 1, it is divided into a signal component entering the UK 2, which determines the type of call and the subscriber to whom it is intended, and the speech component that enters through CP 8 and the speech and control stations 9 to the control unit 7, where it is combined with the new signal component UK 2 gives the command KP 8 to disconnect the connection between streams 2048 kb / s coming from the E1 interfaces and speech channels going to the AB 9 interface boards to which the called subscriber is connected. In addition, UK 2 instructs Instrumentation 6 to prepare the appropriate interface board for establishing a connection (prepare a ringing signal generator, check subscriber availability, etc.). Instrumentation 6 instructs Instrumentation 7 of the necessary board to perform these actions. The communication between them is carried out through KP 8 and control KS 9. The KIP 7 controls AK 11 to which the user terminal is connected. Conversational paths are triggered through instrumentation 6 and / or 7. In the process of servicing a call, the controllers exchange service information with each other (call status, dialing, etc.). After the call is complete, the instrumentation unit 6 reports this to the instrumentation unit 7, which transmits the information of UK 2, after which it destroys all the connections in the control unit 8.

When making a call from the subscriber to the IAC, the subscriber to the external network AB 10 detects a pick-up and reports this to the Controller. The controller gives the command to connect the “Station Response” signal to the subscriber line. The subscriber dials the digits of the number, which are transmitted by the AB 10 to the instrumentation 7, and then through the control channels of the instrumentation 6 to the UK 2. After collecting the entire number, the K 2 issues commands for connecting paths in the KP 7 between the talk channels from

boards and streams of 2048 kb / s to E1 interfaces, from where the call goes to the telephone network (PSTN). After the caller answers, they have the opportunity to speak.

When a new interface board is connected to the MAK, the controller of this board 7 asks the control instrument 6 to load the necessary software into it. The software of the boards is loaded through the control CS 9.

Through RS 232 and Ethernet interfaces, it is possible to make changes to the MAC configuration, as well as to carry out its maintenance.

Flash card 3 stores the UK 2 operating system, IAC software, as well as configuration files. KIP 61 provides synchronization of the Controller of each board through special channels.

Using MAK allows you to create a flexible system that can provide access to both traditional telephony services and broadband data services on a single platform (when organizing subscribers' access to PSTN via 2-wire analogue subscriber lines or using SHDSL technology), and also to provide the possibility of measuring the parameters of subscriber lines included in the Concentrator, to the operating personnel of the PSTN. This ensures high reliability of the complex due to dynamic reconfiguration to replace faulty elements (interface modules). When using it, it is possible to achieve equipment performance at the level of 10-20 thousand calls per hour.

Claims (5)

1. A subscriber line concentrator comprising a control unit, a switching unit, a subscriber unit comprising a switching control device, interconnected by connecting lines, characterized in that the control unit is made in the form of a computer device with a flash card and a memory unit, the switching unit further comprises switching field, and the subscriber unit - subscriber sets, moreover, the switching control device is made in the form of circuit controllers connected to each other through the switching field. 2. The hub according to claim 1, characterized in that the control unit together with the controller of the interface cards and communication fields is made together in the form of a control board Consul 2. 3. The hub according to claim 1, characterized in that the subscriber unit is made in the form of an SLAC30 interface board. 4. The hub according to claim 1, characterized in that the subscriber unit is made in the form of an SLD4 interface board. 5. The hub according to claim 1, characterized in that the subscriber unit is made in the form of an SLI16 interface board.