JPH0466142B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a telephone switching system, and particularly to a telephone switchboard control system that can access a database in a data network or the like.

(Prior Art) Conventionally, in this type of telephone switchboard control system, the central processing unit of the telephone exchange controls the switchboard via the switchboard control device, and the voice communication path from the switchboard is connected to the telephone switchboard of the telephone exchange. The configuration was such that it was connected to.

(Problems to be Solved by the Invention) In the conventional telephone exchange control system described above, the telephone exchange is directly connected to the telephone exchange, so it is difficult for the exchange to access databases in the data network, etc. It was hot.

(Means for Solving the Problems) The telephone switchboard control system of the present invention has a 2B+D interface, which is a standard interface for data terminals for ISDN services, and has a data terminal having a switchboard function, and a data terminal having a switchboard function. 2B+
An ISDN service switching device connected by a D interface, a line module in this ISDN service switching device, and a D interface in this line module.
When receiving an initial registration signal that identifies a detector with a signal receiving function and the detection contents of this detector and specifies that the data terminal works as a switching board, one of the B signals is sent to a communication path switch in the ISDN service switching equipment. to make a semi-permanent connection to the telephone exchange through the telephone exchange, and to relay the D signal to the switchboard control device within the telephone exchange.
By switching the communication path switch in the ISDN service switching equipment, when the data terminal requests general ISDN service, the two B signals are freely transmitted, and when the data terminal requests access to the data network etc. as a telephone switchboard, the above semi-fixed connection is made. an ISDN control device in an ISDN service switching device, and a communication path switch in the ISDN service switching device, which has a function of connecting a B signal that has not been received to a corresponding network according to a selection signal transmitted from a data terminal to a D signal path; It consists of a switchboard control device and a telephone exchange with a board trunk capable of three-way communication.

(Example) Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a telephone exchange control system showing one embodiment of the present invention. A data terminal 1 having a switchboard function has a 2B+D interface, and via B signal paths 7 and 8 and D signal path 9, each signal path trunk 71 in the line module 3 in the ISDN service switching device 2, Connected to 81 and 91. The trunks 71 and 81 for the B signal path are
The D signal path trunk 91 is connected to the ISDN path switch 10 via the D signal detector 4. The ISDN channel switch 10 also includes a trunk circuit 5 connected to the data network 6 and a digital telephone exchange 21 as well as a trunk circuit 12 connected to the telephone exchange channel switch 14 in the digital telephone exchange 21.
An interface circuit 13 connected to a switchboard control device 19 inside is connected. An ISDN control device that controls the ISDN channel switch 10 and the devices connected thereto is prepared, and is arbitrarily connected to the ISDN channel switch 10 depending on the content of the D signal. The call path switch 14 in the digital telephone exchange 21 has an outgoing trunk 15, an incoming trunk 16,
A board trunk 17 having a three-terminal communication path is connected and controlled by a central processing unit 20 via a communication path control device 18. The central processing unit 20 also controls the data terminal 1 through the switching board controller 19.

Next, the operation of this system will be explained with reference to FIG. When an operator sits at the data terminal 1 and inputs a key indicating that the data terminal 1 will work as a switchboard, the corresponding signal is transmitted to the D signal path and reaches the D signal detection circuit 4 via the D signal trunk 91. The output of the D signal detection circuit 4 is transmitted to the ISDN control device 1.
1 recognizes and connects the B signal trunk 81 to the trunk circuit 12 via the ISDN channel switch 10, and connects the D signal trunk 91 to the interface circuit 13 via the ISDN channel switch 10. After completing this preparatory connection, the interface circuit 13 notifies the central processing unit 20 via the switchboard controller 19 that the data terminal 1 is in service as a switchboard. In this state, if the calling party receives a call from the incoming trunk 16 via another station and the selection signal is an operator service request number, the incoming trunk 16 is switched to the telephone exchange call path switch 14.
This connects the board trike 17 to the board trunk 17 and connects the board trunk 17 to the interface circuit 12. On the other hand, the central processing unit 20 communicates with the interface circuit 13 through the switchboard controller 19.
ISDN call path switch 10, D signal trunk 9
1. Indicates that an incoming call has been received to the data terminal 1 via the D signal path 9. Depending on the operator's response, the operator connects the B communication path 8 and the B signal trunk 8.
1, ISDN call path switch 10, trunk circuit 1
2. It becomes possible to communicate with the caller via the telephone exchange path switch 14, board trunk 17, and incoming trunk 16. When it becomes necessary to access the database in the data network 6 due to a call between an operator and a caller, the operator inputs the necessary information using a key, and the information is transferred to the D signal path 9, the D signal trunk 91, and the D signal path 9. The signal is transmitted to the ISDN control device 11 via the signal detector 4, and the ISDN control device 11 connects the trunk circuit 5 to the data network 6 and the B signal trunk 71 via the ISDN channel switch 10. allows access to any database. At the called connection stage, when the operator keys in the called information, this information is sent to the D signal line 9, D signal trunk 91,
The information is transmitted to the switching board controller 19 and central processing unit 20 via the ISDN channel switch 10 and the interface circuit 13. The central processing unit 20 controls the communication path control device 18 and connects the outgoing trunk 1 to the called party.
6 and the board trunk 17. The called party response enables a three-way conversation within the board trunk 17 between the calling party, the called party, and the operator. Thereafter, the operator leaves the room, allowing the caller and called party to talk.

(Effects of the Invention) As explained above, by preparing a switchboard having a standard interface (2B+D) for ISDN terminals and installing an ISDN service switching device between it and the telephone exchange, arbitrary data can be transferred during the operator's switching operation. It becomes possible to access the network database, and has the advantage of being able to provide switchboard services with more functionality than before.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a telephone exchange control system according to an embodiment of the present invention. 1... Data terminal, 2... ISDN service switching device, 3... Line module, 4... D signal detector, 5... Trunk circuit, 6... Data network, 7
...B signal line, 71...B signal trunk,
8...B signal line, 81...B signal trunk, 9...D signal line, 91...D signal trunk, 10...ISDN call path switch, 11...
ISDN control device, 12... Trunk circuit, 13...
...Interface circuit, 14...Telephone exchange channel switch, 15...Outgoing trunk, 16...Incoming trunk, 17...Board trunk, 18...Community path control device, 19...Switchboard control device, 20...
...Central processing unit, 21...Digital telephone exchange.

Claims (1)

[Claims] 1. An ISDN service switching device that controls ISDN terminals is connected to a digital telephone exchange and directly connected to a data network and a packet switching network.
In a telephone switchboard control system for ISDN services, a data terminal that has an ISDN service switching device and a standard interface for ISDN terminals (hereinafter referred to as 2B+D interface) and has a telephone switchboard function, and a 2B+D interface for the data terminal. a line module in the ISDN service exchange device connected by a network interface; a detector having a D signal receiving function in the line module;
When receiving an initial registration signal that identifies the detection contents of the detector and causes the data terminal to function as a switching board, one of the B signals is semi-permanently connected to the digital telephone exchange via a communication path switch in the ISDN service switching equipment. , and switches the call path switch to relay the D signal to the switchboard controller in the digital telephone exchange, and switches the two B signals freely when the data terminal requests general ISDN service, and the telephone When requesting access to a data network, etc. as a switching board, use B, which is not semi-permanently connected.
An ISDN control device having a function of connecting a signal to a corresponding network according to a selection signal, a call path switch in an ISDN service exchange device, a digital telephone exchange having the above-mentioned switchboard control device and a board trunk capable of three-way communication. A telephone switchboard control method characterized by comprising: