JPS61257052A - Telephone switchboard control system - Google Patents

Abstract

PURPOSE:To make possible an access to a data base in an optional data network even during an exchange operation by disposing an ISDN service exchange device constituted by an ISDN control circuit, an ISDN channel switch and a signal detector or the like. CONSTITUTION:A data terminal 1 has a switchboard function, carries out the switchboard service by a key input of an operator and a speaking between an operator and a caller is performed through an ISDN service exchange device 2 or the like. In the speaking between the operator and the caller, when necessity of an access is produced in a data base, the operator inputs by the key the required information, thereby the information is transmitted to an ISDN controller 11. Namely, it is transmitted to the device 11 through a D signal line 9, a D signal trunk 91, and a D signal detector 4 and the device 11 connects a trunk circuit 5 to a data network 6 with a trunk 71 for a B signal through an ISDN channel switch 10. Thereby, even during the exchange operation, an the access to an optional data base in the data network can be carried out.

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a telephone switching system, particularly a telephone switchboard control system that can access a database in a data network, etc. Conventionally, this type of telephone switchboard control system has been used. The system was configured such that the central processing unit of the telephone exchange controlled the exchange via a switchboard controller, and the voice communication path from the switchboard was connected to the communication path switch of the telephone exchange.

(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. Met.

(Means for Solving the Problems) The telephone exchange control system of the present invention has a 2B+D interface which is a standard interface for data terminals for ISDN service, and has a data terminal having a switchboard function, and this data terminal VC2B+D. The data terminal identifies an ISDN service switching device connected via an interface, a line module in this ISDN service switching device, a detector having a D signal receiving function in this line module, and the detection contents of this detector. When receiving the initial registration signal that specifies that it will work as a switchboard, connect one side of the B signal semi-permanently to the telephone exchange via the communication path switch in the ISDN service exchange equipment, and connect the first signal and the D signal raw to the telephone. Switch the communication path switch in the ISDN service switching equipment so that it is relayed to the switching board control equipment in the switching equipment, and when the data terminal requests general ISDN service, the two B signals are freely sent, and as a telephone switchboard to the data network etc. an ISDN control device in an ISDN service switching device having a function of connecting the non-permanently connected B signal to the corresponding network according to a selection signal transmitted from the data terminal into the D signal path when an access request is made; It is composed of a call path switch within the ISDN service exchange equipment, a telephone exchange having a switchboard control device and a board trunk capable of making regular calls.

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

FIG. 1 is a block diagram of a telephone exchange control system showing one embodiment of the present invention. The data terminal 1 having a switchboard function has a 2B+D interface and is connected to each signal path trunk 71 in the line module 3 in the ISDN service switching device 2 via the B signal paths 7 and 8 and the D signal path 9.
, 81.91. B signal path trunk 71.
81 is connected to the ISDN communication path switch 10IC, and the D signal path trunk 91 is connected to the ISDN communication path switch 10 via the D signal detector 4. The ISDN channel switch 10Vc is also connected to the trunk circuit 5 connected to the data network 6 and the trunk circuit 12 connected to the telephone exchange channel switch 141C in the digital telephone exchange 21, as well as the switchboard control device in the digital telephone exchange 21. 19 is connected to the interface circuit 13. An ISDN control device that controls the ISDN communication path switch 10 and devices connected thereto is prepared.
It is optionally connected to the ISDN channel switch 10 depending on the content of the signal. An outgoing trunk 15, an incoming trunk 16, and a board trunk 17 having a three-terminal communication path are connected to the communication path switch 14 in the digital telephone exchange 21 and are controlled by the central processing unit 20 via the 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 the operator sits on the data terminal IK and presses a key indicating that data terminal 1 will work as a switchboard, the corresponding signal will be set to D.
It is transmitted to the signal path and reaches the D signal detection circuit 4Vc via the D signal trunk 91. The output of the D signal detection circuit 4 is recognized by the ISDN control unit [11] and the B signal trunk 81 is sent to the trunk circuit 1 via the ISDN communication path switch 10.
2, and the D signal trunk 91 is connected to the interface circuit 13 via the ISDN communication path switch 10. Interface circuit 13 with this preparatory connection completed
causes the central processing unit 20 to be notified via the switchboard controller 19 that the data terminal l is in service as a switchboard. In this state, if the calling party receives an incoming call from the incoming trunk 16 via another station, and the selection signal is the operator service request number, the human trunk 16 is connected to the boat drake 17 by the telephone exchange channel switch 14, and the board trunk 17 is connected to the board trunk 17. Connect to interface circuit 12. On the other hand, the central processing unit 20 instructs the data terminal l via the interface circuit 13, the ISDN call path switch 10, the D signal trunk 91, and the D signal path 9 through the switchboard controller 19 that there is an incoming call. . In response to the operator's response, the operator switches the B communication channel 8, the B signal trunk 81, the ISDN channel switch 10, the trunk circuit 121 to the switchboard channel switch 14, the board trunk 17 . It becomes possible to talk to the caller through the incoming trunk 161. When it becomes necessary to access the database in the data network 6 due to a call between the operator and the caller, the operator performs the necessary clearing 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 it to the data network 6 via the trunk circuit 5 and B signal trunk 1e via the ISDN channel switch 10, and connects it to any arbitrary point within the data network 6. database. At the called connection stage, when the operator keys in the called information, this information is transmitted to the D signal line 9,
D signal trunk 91. ISDN call path switch 10,
The switch controller 19 and the central processing unit 201C are connected through the interface circuit 13. Central processing unit 20
is controlled by the communication route control device [181] and connects the outgoing trunk 16 and the board trunk 17 headed for the called party.

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 switching board for the ISDN terminal standard interface (2B+D)' and providing an ISDN service switching device between it and the telephone exchange,
This allows the operator to access any database within the data network during switching operations, and has the advantage of providing switchboard services with improved functionality compared to conventional systems.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a telephone exchange control system according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 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... Call path control device, 19... Switchboard control device, 20...・Central processing unit. 21...Digital telephone converter.

Claims (1)

[Claims] In an ISDN service implementation system in which an ISDN service switching device that controls an ISDN terminal is connected to a digital telephone exchange and directly connected to a data network and a packet switching network, the ISDN service switching device and the ISDN
a data terminal having a standard interface for terminals (hereinafter referred to as 2B+D interface) and having a telephone switchboard function; a line module in the ISDN service switching device connected to the data terminal by the 2B+D interface; A detector having a D signal receiving function in the line module identifies the detection contents of the detector and the data terminal functions as a switching board.When receiving an initial registration signal, one of the B signals is sent to the ISDN service switching equipment. A semi-permanent connection is made to the digital telephone exchange via a communication path switch, and the communication path switch is switched so as to relay the D signal raw to a switchboard controller in the digital telephone exchange, and the data terminal is ISDN of
When requesting a service, the two B signals can be used freely, and when requesting access to a data network etc. as a telephone exchange, the B signal that is not semi-fixed connected can be connected to the corresponding network according to the selection signal. an ISDN control device having an ISDN control device;
1. A telephone switchboard control system comprising: a call path switch within a DN service switching device; and a digital telephone switch having the switchboard control device and a board trunk capable of three-way communication.