JPH04113795A - Wired broadcast telephone exchange - Google Patents

Abstract

PURPOSE:To facilitate the increase in the line capacity and to prevent the system-down of the entire exchange even when a fault takes place in a control section of one block by providing plural block exchange processing sections and a main control section implementing exchange processing among the processing sections to the exchange, dividing into blocks and controlling them decentralizingly. CONSTITUTION:A digital exchange 100 consists of plural block exchange processing sections 1021-102n applying exchange processing to subscriber terminal groups 1031-103n in a predetermined block and a main control section MCPU 101 applying exchange processing among the block exchange processing sections, and each of the block exchange processing sections has a control section CPU 104 making internal exchange processing. In the case of talking between subscriber terminals in the subscriber terminal groups 1031, 1032, the CPU 104 in the block exchange processing section 1021 processes mutual talking data, and in the case of talking between one subscriber terminal in the subscriber terminal group 103n and one subscriber terminal in the subscriber terminal group 1031, the MCPU 101 processes the talking data via the CPUs in the block exchange processing sections 1021, 102n.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a wired broadcast telephone exchange.

[Conventional technology]

In conventional cable broadcasting telephone exchanges, all lines are controlled and supervised by one main microcomputer, and even when multiple microcomputers are used to control the subscriber line interface section, the subscriber lines can only be supervised by one main microcomputer. It was configured with one main microcomputer.

[Problem to be solved by the invention]

In the conventional cable broadcasting telephone exchange mentioned above, one main microcomputer controls all lines.

Since it is supervised, the disadvantage is that the response becomes slower as the line capacity increases.

Furthermore, even when multiple microcomputers are used to control subscriber lines, the line status is supervised by the central main microcomputer, so if a failure occurs in the central main microcomputer, the entire exchange will go down. It has the disadvantage of being

[Means to solve the problem]

The wired broadcasting telephone exchange of the present invention includes a plurality of block exchange processing units each performing mutual exchange processing between a plurality of telephones within a predetermined block, and a plurality of block exchange processing units performing mutual exchange processing between the plurality of block exchange processing units. Each of the plurality of block exchange processing units includes a subscriber line interface unit that interfaces with a plurality of telephones in the predetermined block via a subscriber line, and a main control unit inside the block exchange processing unit. It has a control section controlled by the main control section that performs switching processing, and a switching interface section that interfaces with the subscriber line interface section and the control section.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

In FIG. 1, a digital exchange 100 according to the present embodiment includes a plurality of block exchange processing units 102, 102, 102, and 102, each of which performs exchange processing on a plurality of subscriber terminal groups 103+, 1032 to 103, within a predetermined block. and a plurality of block exchange processing units 1021-102. The block exchange processing unit 1021 has a main control unit (hereinafter referred to as MCPU) 101 that performs mutual exchange processing, and a subscriber line interface unit 106a that interfaces with the subscriber terminal group 1032, and a subscriber line interface unit 106a that interfaces with the subscriber terminal group 1032. A subscriber line interface unit 106b that interfaces with the group 1032, a block exchange processing unit 102, a control unit (hereinafter referred to as CPU) 104 that performs internal exchange processing, and a control bus 108 between the subscriber line interface unit 106a and the CPU 104. Replacement interface unit 105a that interfaces via
, subscriber line interface section 106b, and CPU1
04 and an exchange interface unit 105b that interfaces with the control bus 108.
, has the same configuration as .

Next, the operation of this embodiment will be explained.

In the case of a call between subscriber terminals in the subscriber terminal groups 1031 and 1032, mutual call data is processed by the CPU 104 in the block exchange processing unit 1021. A call between one subscriber terminal and one subscriber terminal in the subscriber terminal group 1031 is handled by the respective block exchange processing units 102, 102. cp within
Call data is processed by MCPU 101 via u.

That is, block exchange processing units 1021 to 102. .

Divided and distributed processing is performed on each.

〔Effect of the invention〕

As described above, the present invention includes a plurality of block exchange processing units each performing mutual exchange processing between a plurality of telephones within a predetermined block, and a main control unit performing mutual exchange processing between the plurality of block exchange processing units. Each of the plurality of block exchange processing units includes a subscriber line ink interface unit that interfaces with a telephone set in a predetermined block via a subscriber line, and a main control unit that performs exchange processing within the block exchange processing unit. a control section controlled by the controller, and a switching interface section that interfaces with the subscriber line interface section and the control section.
Distributed control makes it easy to expand line capacity, and even if a failure occurs in the control unit within one block, it is effective in preventing the entire exchange from going down.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. 100...Digital exchange, 101...Main control unit (
MCPU), 1021-102. - block exchange processing unit, 100. ~103fi...Subscriber terminal group, 104
...Control unit (CPU), 105a, 105b...Replacement interface section, 106a, 106b...Subscriber line interface section, 107...Communication bus, 1
08...Control bus.

Claims (1)

[Claims] a plurality of block exchange processing units each performing mutual exchange processing between a plurality of telephones within a predetermined block; and a main control unit performing mutual exchange processing between the plurality of block exchange processing units; Each switching processing section is controlled by a subscriber line interface section that interfaces with a plurality of telephones in the predetermined block via a subscriber line, and the main control section that performs switching processing within the block switching processing section. 1. A wire broadcasting telephone exchange, comprising: a control section; and an exchange interface section that interfaces with the subscriber line interface section and the control section.