JPS63296490A - Channel equipment - Google Patents

Abstract

PURPOSE:To enable free communication between terminal equipments and to reduce the throughput of the central processor in an exchange by increasing the number of parallel bits of each channel of a channel equipment. CONSTITUTION:Subscriber circuits 100 and 200 consist of office-side terminating circuits 12 and 22 (circuits constituting U interfaces of ISDN) and D channel (signal channel) processors 13 and 23 (circuits processing the protocol of the D channels after reception), and has a means which connects the information of the D channels to a channel side in a multiple way with the D channel processors 13 and 23. Thus, pieces of information of not only a B channel (information channel), but also the D channel are sent to a channel 300. The channel 300 can pass an (8+2)-bit parallel signal for the switching of the 64 kb/s B channel and 16 kb/s D channel together. Consequently, ISDN terminals 10 and 20 can have a direct communication through the channel when connected mutually.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a communication path device for an electronic exchange, and in particular to an ISD
The present invention relates to a communication path device for an electronic exchange accommodating N terminals.

[Conventional technology]

Conventional communication path devices of electronic exchanges that accommodate ISDN terminals can usually pass audio converted into 8-bit parallel signals, but cannot pass accompanying control signals.

[Problem that the invention seeks to solve]

In the electronic exchange having the above-mentioned conventional communication path device, I
When accommodating an SDN terminal, for example, when sending a control signal from the originating subscriber side to the terminating subscriber, the subscriber circuit on the originating side first receives the control signal, and then separately transmits the contents to the central processing unit. Further, under control from the central processing unit, a control signal sending circuit of the subscriber circuit on the called side sends a signal to the called subscriber. For this reason, even in communication between terminals with intelligence such as I5DN terminals, there is a problem in that the central processing unit of the electronic exchange is always involved in the transmission and reception of control signals.

SUMMARY OF THE INVENTION An object of the present invention is to provide a communication path device that allows voice and control signals to pass through the exchange without the intervention of the central processing unit of the electronic exchange after the terminals are connected.

[Means for solving problems]

The communication path device of the present invention is a communication path device of an electronic exchange constituted by a control device and a communication path device.
means for realizing a basic access U interface, means for processing D channel protocols 1 to 1;
It is configured to include means for sending the contents of the channel as is to the communication path, and means for bundling and switching connection of the B channel and D channel as the communication path.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

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

In FIG. 1, the ISDN terminal 10.20 is connected to the subscriber circuit 100.20 of the exchange through the network termination circuit 11.21.
It is contained in 0. There are two B channels (information channels) and one D channel (signal channel) between the ISDN terminal and the exchange.

The subscriber circuits 100 and 200 are terminal circuits 12゜22 (
(Circuit that realizes the ISDN U interface) and D
It consists of a channel processing device 13.23 (a circuit that processes the D channel protocol after reception). The present invention further includes means for connecting this D channel information to the D channel processing device 13, 23 in a dual manner to the communication path side. In this way, not only the B channel information but also the D channel information is sent to the communication path 300. The communication path 300 is, for example, 64 kb/s
B channel of 16 kb/s and D channel of 16 kb/s can be exchanged in a bundle so that parallel signals of (8+2) bits can be passed. By doing this, the ISDN terminal 1
When terminals 0 and 20 are connected to each other, both terminals can communicate directly through the communication path.

〔Effect of the invention〕

As explained above, the present invention enables not only information channels but also signal channel information to be directly communicated between terminal devices by increasing the number of parallel bits for each channel of the communication path device, thereby making it possible to directly communicate between terminal devices. This has the effect of enabling free communication between terminal devices without the intervention of a central control device, and of reducing the processing amount of the central control device in an exchange.

[Brief explanation of the drawing]

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

Claims (1)

[Claims] In the communication path device of an electronic exchange consisting of a control device and a communication path device,
It includes means for realizing an interface, means for processing the D channel protocol, means for sending the contents of the D channel as is to the communication path, and means for bundling and switching connection of the B channel and the D channel as the communication path. A communication path device characterized by: