JPH04276998A - Attendant board control system in isdn exchange - Google Patents

Abstract

PURPOSE:To attain transfer of lots of information by connecting an attendant board to a subscriber interface of an ISDN exchange via a terminal adaptor and transferring information through D and B channels. CONSTITUTION:An ISDN exchange 11 is connected to an attendant board 16 via a terminal adaptor 15 through a subscriber interface 17. Then a control signal from the attendant board 16 and the exchange 11 is fetched by a central controller 12 and the adaptor 15 by using a D-channel. Moreover, the connection between the subscriber 16 and the attendant board 16 and between the attendant boards 16 is implemented through a B channel, and one B channel is used to send a voice signal and the other B channel is used to send data such as call information. The capacity of a communication line is increased and lots of information is transferred by accommodating the attendant board to the subscriber line of the exchange.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchboard control system in an ISDN switch.

0002

[Prior Art] Conventionally, in a switch having a switchboard, the switchboard and the switchboard are connected using an internal interface specific to the system, and control signals are transferred through the same interface as call information, and the speed Also 2.4
It was about kbps.

0003

In the above-described switchboard control, the interface between the switchboard and the switchboard is a system-specific interface, and an inter-board interface device is required for each system. Furthermore, the communication capacity is small at 2.4 kbps and 4.8 kbps, making it impossible to transfer large amounts of data, and there is a problem in that the control ability of the switchboard also depends on the ability of the switchboard itself.

0004

[Means for Solving the Problems] The switchboard control method in the ISDN switch of the present invention is applicable to the basic line (2B+D) or primary line (23) of the ISDN switch.
B+D) is connected to an ISDN standard terminal adapter, and a switching board is connected to the terminal adapter, and the D channel is used for information transfer between the ISDN exchange and the switching board, and the D channel is used for information transfer between the switching boards. B channel can be used.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.

Referring to FIG. 1, which shows one embodiment of the present invention, an ISDN switch 11 and an ISDN subscriber interface 17 (2B+D or 23B+D)
Connection is made via a terminal adapter 15 using the D channel protocol, which is a standard protocol. Exchange table 16
Control signals from the ISDN exchange 11 are respectively taken into the central control unit 12 and the terminal adapter 15 via a D channel of 16 kbps in the basic interface and 64 kbps in the primary interface. ISDN subscriber 14 and switchboard 16
Connections between the switchboards 16 and the switchboards 16 are made using a B channel (64 kbps), and voice can be sent using one B channel, and data such as call information can be sent using another B channel. FIG. 2 shows the information transfer path of one subscriber line during basic access. The ISDN exchange 11 side can receive the B channel data from the exchange 16 and send it to the exchange 16 by drawing the B channel from the exchange 16 to the sender/receiver 13 on the exchange 11 side.

[0007]

[Effects of the Invention] As explained above, according to the present invention, I
By accommodating a switchboard in the subscriber line of an SDN switch, the capacity of the communication path with the switchboard can be increased and a large amount of information can be transferred. Furthermore, the CCITT standard D channel protocol can be used as the protocol between the switchboard and the ISDN switch, allowing for versatile processing. Furthermore, there is no need for equipment specific to the switchboard on the switchboard side.

[Brief explanation of the drawing]

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

FIG. 2 is a diagram showing a communication path in a basic interface in the same embodiment.

[Explanation of symbols]

11 ISDN exchange 12 central controller 13 sender/receiver 14 ISDN subscriber 15 ISDN terminal adapter 16
Switchboard 17 Subscriber interface

Claims (1)

[Claims] [Claim 1] Basic line of ISDN exchange (
An ISDN standard terminal adapter is connected to the primary line (2B+D) or the primary line (23B+D), and a switching board is connected to the terminal adapter, and the D channel is used for information transfer between the ISDN switch and the switching board, and the switch A switchboard control system in an ISDN switchboard, characterized by making it possible to use a B channel for information transfer between switches.