KR100251745B1 - Line concentrator of exchanger - Google Patents

Abstract

PURPOSE: A line concentrator for ISDN subscribers and general subscribers in a full electronic switching system is provided to improve a channel consumption of a PCM link by allowing only a subscriber part where traffic is congested to perform line concentrating, reduce a load to a control processor of a subscriber that do not perform line concentrating, and reduce a unit cost of an instrument by removing a unit for line concentrating in a subscriber part where line concentration is not performed. CONSTITUTION: A general subscriber part(28) includes a general subscriber board(30), a general subscriber control and line concentration board(32) and a general subscriber control processor(34). The general subscriber board(30) receives a predetermined range of general subscribers and interfaces a control data and a voice data between the general subscriber and the general subscriber control and line concentration board(32). The general subscriber control and line concentration board(32) interfaces a control data between the general subscriber board(30) and the general subscriber control processor(34), line-concentrates a voice data received from the general subscriber board(30) to provide it to a switching unit(44) through a PCM link under the control of the general subscriber control processor(34) or line-concentrates a B channel data, a voice data, received from an ISDN subscriber control board(40) of an ISDN subscriber part(36) to provide it to the switching unit(44) through the PCM link under the control of the general subscriber control processor(34). The general subscriber control and line-concentration board(32) provides a data received from the switching unit(44) through the general subscriber board(30) to a general subscriber under the control of the general subscriber control processor(34) or provides the data through the ISDN subscriber control board(40) and the ISDN subscriber board(38) to the ISDN subscriber.

Description

Concentrator for general subscribers and general subscribers in electronic switching center

The present invention relates to an electrical exchanger, and more particularly to a concentrator.

Referring to FIG. 1 which shows a block diagram of a concentrator of a conventional electronic switchboard, the conventional concentrator includes a general subscriber unit 10 for collecting the general subscriber and an integrated service digital network; ISDN) is composed of an ISDN subscriber unit 18 and a switching unit 26 for the aggregation of subscribers.

The general subscriber unit 10 is composed of a general subscriber board 12, the general subscriber control and aggregation board 14 and the general subscriber control processor 16, in particular the general subscriber control and aggregation board 14 is a PCM ( Pulse Code Modulation) is connected to the switching unit 26. Here, one PCM link accommodates 32 channels. The general subscriber control and collection board 14 collects voice data from the general subscriber board 12 under the control of the general subscriber control processor 16 and provides it to the switching unit 26 through the PCM link. Enabled the call.

The ISDN subscriber unit 18 is composed of an ISDN subscriber board 20, an ISDN subscriber control and aggregation board 22, and an ISDN subscriber control processor 24, in particular, the ISDN subscriber control and aggregation board 22 is a PCM. It is connected to the switching unit 26 as a (pulse code modulation) link. The ISDN subscriber control and aggregation board 22 collects B-channel data from the ISDN subscriber board 20 under the control of the ISDN subscriber control processor 24 and transmits the B-channel data to the switching unit 26 to enable a call. .

As described above, in the conventional concentrator, the general subscriber control processor 16 and the ISDN subscriber control processor 24 perform control related to the aggregation of the general subscriber control and collection board 14 and the ISDN subscriber control and collection board 22, respectively. It was to be performed. As a result, there were a lot of parts for the assembly, which was costly. In addition, the general subscriber control processor 16 and the ISDN subscriber control processor 24 has a problem that the load is increased as the control of the aggregation.

In addition, when used in a remote switching device, the PCM link is divided and used as shown in FIG. 1 for communication with the main body. There was a problem with blocking.

As described above, there is a difficulty in costing a lot by separately configuring a concentrator for general subscribers and ISDN subscribers. In addition, there is a problem in that the load of the control processor is increased as the control processor according to each subscriber to control the aggregation. In addition, since the PCM link is used differently according to the subscribers, there is a difficulty in call restriction even when the channel allocated to other subscribers is empty when the call volume is biased to only one subscriber.

Accordingly, an object of the present invention is to reduce the cost by configuring a concentrator for general subscribers and ISDN subscribers in one, reduce the load on the control processor by controlling any one of the control processor, caused by the imbalance between the subscribers The present invention provides a concentrator for ISDN subscribers and general subscribers in electronic switchboards that eliminate call restrictions.

1 is a block diagram of a conventional concentrator;

2 is a block diagram of a concentrator according to a preferred embodiment of the present invention;

Figure 3 is a detailed configuration of the general subscriber control and collecting board of Figure 2;

The present invention for achieving the above object is a synthesis unit for interfacing the switching unit, the general subscriber board for interfacing voice data and control data of a plurality of general subscribers, and the D-channel data and B-channel data of a plurality of general information communication network subscribers It is connected to the information communication network subscriber board and the switching unit by a limited channel, and collects the voice data of the general subscriber board or the B channel data of the general information communication network subscriber board to provide the switching unit through the channel, and from the switching unit. The general subscriber board and the control data through the general subscriber control and aggregation board for providing the subscriber's data to the general subscriber board or the general information communication network subscriber board and interface the control data of the general subscriber board. Sending and receiving, controlling and collecting the general subscriber A general subscriber control processor for controlling the aggregation of data, and the B channel data interface between the general information network subscriber board and the general subscriber control and aggregation board, and the D channel data from the general information network subscriber board. A subscriber station control board, an integrated information network subscriber control processor for transmitting and receiving control data to and from the integrated information network subscriber board via the integrated information network subscriber control board, and control data from the general subscriber control processor and the integrated information network subscriber control processor. And a higher processor for controlling the general subscriber control processor to control the general subscriber control and the aggregation of the collection board.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description and the annexed drawings, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. And a detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

Prior to the detailed description of the present invention, the present invention is configured to perform the aggregation only in the subscriber portion in which the call volume is biased. For example, in the case of accommodating a large number of subscribers and a small number of ISDN subscribers, the ISDN subscriber unit does not perform the aggregation, but in addition to the aggregation of voice data from the subscriber, It performs aggregation of B channel data to provide it to the switching unit. As a result, channel waste for the PCM link can be improved when a subscriber is busy. In addition, it is possible to reduce the load on the control processor of the subscriber that does not perform the aggregation. In addition, since the apparatus for collecting the concentrator can be removed from the subscriber unit that does not perform the consolidation, the cost of the device can be reduced.

Referring to Figure 2 showing a block diagram of a concentrator according to a preferred embodiment of the present invention as described above, the concentrator is a general subscriber unit 28, ISDN subscriber unit 36 and the switching unit 44 It is composed.

The general subscriber unit 28 includes a general subscriber board 30, a general subscriber control and collection board 32, and a general subscriber control processor 34. The general subscriber board 30 accommodates a general subscriber in a predetermined range and interfaces control data and voice data between the general subscriber and the general subscriber control and aggregation board 32. The general subscriber control and collection board 32 interfaces control data between the general subscriber board 30 and the general subscriber control processor 34 and is controlled from the general subscriber board 30 under the control of the general subscriber control processor 34. B, which is voice data from the ISDN subscriber control board 40 of the ISDN subscriber unit 36 under the control of the general subscriber control processor 34, by collecting the voice data of the ISDN and providing it to the switching unit 44 through the PCM link. Channel data is collected and provided to the switching unit 44 through the PCM link. In addition, the general subscriber control and collection board 32 provides data from the switching unit 44 to the general subscriber through the general subscriber board 30 under the control of the general subscriber control processor 34, or the ISDN subscriber. It is provided to the ISDN subscriber through the control board 40 and the ISDN subscriber board 38.

Here, referring to FIG. 3, which shows a detailed configuration diagram of the general subscriber control and aggregation board 32, the subscriber matching unit 46 matches control data from the general subscriber board 30 to control data conversion unit ( 48) or B channel data from the ISDN subscriber board 38 through the ISDN subscriber control board 40 is provided to the concentrator 52. The control data conversion unit 48 converts the data from the control data matching unit 50 into a mode and address combination and transmits the data to the converging unit 52 and the subscriber matching unit 46, and converts the data in the reverse order to control data matching. It transmits to the part 50. The control data matching section 50 converts the control data from the control data converting section 48 into a matching form necessary for matching with the general subscriber control processor 34. The collecting unit 52 collects the voice data or the B channel data from the subscriber matching unit 46 according to the collecting data provided by the general subscriber control processor 34. The PCM matching unit 54 is a portion that matches the switching unit 44 and converts the voice data or the B channel data collected by the collecting unit 52 to be sent to the switching unit 44, or the switching unit 44. The data coming from is converted and provided to the condenser 52.

In FIG. 2, the general subscriber control processor 34 provides control data from the general subscriber to the higher processor, and controls the general subscriber control and the aggregation of the collecting board 32 under the control of the higher processor.

Here, the voice data transmission / reception path of the general subscriber is as follows.

General subscriber ⇔ General subscriber board (30) ⇔ General subscriber control and collection board (32) ⇔ Switching section (44)

And, the control data transmission and reception path of the general subscriber is as follows.

General Subscriber ⇔ General Subscriber Board (30) ⇔ General Subscriber Control and Convergence Board (32) ⇔ General Subscriber Control Processor (34)

The ISDN subscriber unit 36 includes an ISDN subscriber board 38, an ISDN subscriber control board 40, and an ISDN subscriber control processor 42. The ISDN subscriber board 38 accommodates a predetermined range of ISDN subscribers, and provides D-channel data, which is control data from the ISDN subscribers, to the ISDN subscriber control processor 42 through the ISDN subscriber control board 40. The B-channel data, which is voice data from the ISDN subscriber, is provided to the general subscriber control and aggregation board 32 through the ISDN subscriber control board 40. The ISDN subscriber control board 40 removes the aggregation function from the conventional ISDN subscriber control and aggregation board, and interfaces the D-channel data between the ISDN subscriber board 38 and the ISDN subscriber control processor 42, and the ISDN And a function of forming a transmission / reception path of B-channel data between the subscriber board 38 and the general subscriber control and aggregation board 32. The ISDN subscriber control processor 42 provides DDN data of ISDN subscribers provided through the ISDN subscriber board 38 and the ISDN subscriber control board 40 to a higher processor. The upper processor transmits various tones according to the D-channel data provided by the ISDN subscriber control processor 42, the switching unit 44, the general subscriber control and aggregation board 32, the ISDN subscriber control board 40, and the ISDN subscriber board. Provided to ISDN subscribers through (38).

Here, the B-channel data transmission / reception path of the ISDN subscriber is as follows.

ISDN subscriber ⇔ ISDN subscriber board (38) ⇔ ISDN subscriber control board (40) ⇔ general subscriber control and collection board (32) ⇔ switching unit (44)

The IS channel subscriber's D channel data transmission / reception path is as follows.

ISDN Subscriber ⇔ ISDN Subscriber Board (38) ⇔ ISDN Subscriber Control Board (40) ⇔ ISDN Subscriber Control Processor (42)

The operation of the concentrator as described above will be described. First, in the case where a general subscriber connected to the general subscriber board 30 hooks off, the hook-off data is provided to the general subscriber control processor 34 along the general subscriber's control data transmission / reception path. . The subscriber control processor 34 provides the hook-off data to a higher processor. The upper processor provides a dial tone to a general subscriber along a voice data transmission / reception path in response to the hook-off data. When the general subscriber inputs a digit for dialing in response to the dial tone, if the digit is in the form of a dual tone multi-frequency signal, the dual tone multi-frequency signal is switched through a voice data transmission / reception path 44. Is sent. If the digit is in the form of a dial pulse, the digit is transmitted to the upper processor through the control data transmission / reception path. When connected to the other party due to the dialing, voice data of the general subscriber is transmitted to the switching unit 44 through the voice data transmission and reception path, and voice data from the other party is also provided to the general subscriber through the voice data transmission and reception path. Here, the higher processor controls the general subscriber control processor 34 so that the voice data of the general subscriber is collected in the general subscriber control and collection board 32 and the voice data from the other party is restored in the general subscriber control and collection board 32. To control. At this time, the general subscriber control processor 34 controls the general subscriber control and the aggregation of the collecting board 32 under the control of the upper processor.

And, when the ISDN subscriber connected to the ISDN subscriber board 38 hooks off, the hook-off data is provided to the ISDN subscriber control processor 42 along the D-channel data transmission / reception path. The ISDN subscriber control processor 42 provides the hook-off data to a higher processor. The upper processor provides an ISDN subscriber with a dial tone along the B-channel data transmission / reception path of the ISDN subscriber in response to the hook-off data. The dual tone multi-frequency signal according to the digit input by the ISDN subscriber for dialing in response to the dial tone is provided to the upper processor through the D-channel data transmission / reception path of the ISDN subscriber. When connected with the other party due to the dialing, the B-channel data of the ISDN subscriber is transmitted to the switching unit 44 along the B-channel data transmission / reception path, and the B-channel data from the other-side ISDN subscriber is also along the B-channel data transmission / reception path. Is provided. Here, the host processor controls the general subscriber control processor 34 so that the B-channel data of the ISDN subscriber is collected in the general subscriber control and collection board 32 and the B channel data from the other party is restored in the general subscriber control and collection board 32. ). At this time, the general subscriber control processor 34 controls the general subscriber control and the aggregation of the collecting board 32 under the control of the upper processor.

As described above, the present invention is configured to perform aggregation only at subscribers with a heavy call volume, thereby improving channel waste for the PCM link, reducing the load on the control processor of the subscriber not performing aggregation, and performing no aggregation. Since the subscriber unit can remove the device for condensation, the cost of the device can be reduced.

Claims (1)

In a concentrator for general subscribers and general subscribers in an electronic switchgear, Switching unit, General subscriber board for interfacing voice data and control data of multiple subscribers, A general information network subscriber board for interfacing D channel data and B channel data of a plurality of general information network subscribers; It is connected to the switching unit with a limited channel, and aggregates the B channel data of the subscriber board or the voice data of the general subscriber board and provides the switching unit through the channel, and provides data from the switching unit to the general subscriber board. Or a general subscriber control and aggregation board for providing the integrated information communication network subscriber board and interfacing the control data of the general subscriber board; A general subscriber control processor configured to transmit and receive control data to and from the general subscriber board through the general subscriber control and aggregation board, and to control the aggregation of the general subscriber control and the aggregation board; A comprehensive information network subscriber control board for interfacing the B channel data between the integrated information network subscriber board and the general subscriber control and aggregation board, and for interfacing the D channel data from the integrated information network subscriber board; A comprehensive information network subscriber control processor for transmitting and receiving control data to and from the integrated information network subscriber board through the integrated information network subscriber control board; And a higher processor that controls the subscriber control processor to control the subscriber control and the aggregation of the aggregation board according to control data from the subscriber control processor and the subscriber information processor. Concentrator for subscribers and general subscribers.

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