JPH05219214A - Isdn terminal equipment retransmitting system - Google Patents

Abstract

PURPOSE:To enable retransmission to the same outgoing origination with a simple operation by an optional terminal equipment B by allowing the optional terminal equipment B to monitor and store the D-channel call control signal of an optional terminal equipment A and allowing the terminal equipment B to transmit a stored called number when the terminal equipment B makes transmission to the same opposite party. CONSTITUTION:A terminal equipment 2 connected to an ISDN basic interface bus 6 is provided with a memory 3 storing a called number sent from a terminal equipment 1 at its transmission. When the terminal equipment 1 makes transmission and is connected to a terminal equipment 4, a setup request from the terminal equipment 1 is sent to an ISDN exchange 7 and a called party number of the called terminal equipment 4 is included in the setup request and the ISDN exchange 7 connects the terminal equipments 1, 4. In this case, the terminal equipment 2 monitors the setup request sent from the terminal equipment 1 and stores the called party number in the information to the memory 3. Then the terminal equipment 2 reads the information in the memory 3 and confirms the called party number of the terminal equipment 4 and sends the setup request to the ISDN exchange 7 to be connected to the terminal equipment 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ISDN terminal redialing system.

[0002]

2. Description of the Related Art Conventionally, when making a call connection from a terminal and making a call connection to the same destination by a one-touch button or the like after the call ends, the redial operation is performed by the terminal itself.

[0003]

Since the conventional redialing system has a redialing function for each terminal, one terminal A on the bus makes a call operation to the terminal C, and after the call ends, the same bus is used. When the other terminal B above connects to the terminal C, the terminal B performs the same operation as the terminal A (all digit dialing of the called party number if dial operation is performed), which is a burden on the terminal user. It was

An object of the present invention is that after making a call connection from an arbitrary terminal on the ISDN basic interface, another terminal can re-call to the same destination by a simple operation such as one touch.
It is to provide an SDN terminal redialing method.

[0005]

The ISDN terminal redialing system of the present invention is an ISDN basic interface (2B + 2).
In a plurality of ISDN terminals accommodated on the bus, when an arbitrary terminal A among the plurality of terminals makes an outgoing connection, D
The call control signal sent on the channel is monitored by an arbitrary terminal B other than the calling terminal, the called party information in the call control signal is stored in the terminal B, and the terminal B sends the call by the terminal A. When making a call to the called terminal C, the calling is performed by the stored called party information.

[0006]

The present invention will be described below with reference to the drawings. FIG. 1 is a relay system diagram showing an embodiment of the present invention.
The terminal 2 connected to the same bus 6 is provided with a memory 3 for storing the called party number included in the call setting request information sent by the terminal 1 when making a call.

When the terminal 1 makes an outgoing connection to the terminal 4, a call setting request is sent from the terminal 1 to the ISDN exchange 7 as a call control signal. The call setup request information includes the called party number of the called terminal 4, and it is a known operation that the ISDN exchange 7 connects the terminals 1 and 4 with this.

At this time, the terminal 2 monitors the call setting request information sent from the terminal 1 and stores the called number (subscriber number of the terminal 4) in the information in the redialing storage memory 3. The terminal 2 reads out the information in the recalled memory 3 by a predetermined method, confirms the subscriber number (called number) of the terminal 4, and then calls the recalled memory 3 by a simple operation such as a recall button. The call setup request is sent to the ISDN exchange 7 by the number to connect with the terminal 4.

[0009]

As described above, the present invention is based on the ISDN.
With multiple terminals that are accommodated in a bus form with a basic interface,
Operation performed once by terminal A because arbitrary terminal B monitors and stores the D channel call control signal of arbitrary terminal A, and when terminal B makes a call to the same party, the stored called party number is reproduced and transmitted. Can be reproduced on terminal B with a simple operation.

[Brief description of drawings]

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

[Explanation of symbols]

 1, 2 ISDN terminal 3 Recall storage memory 4 Called terminal 5 Network terminating device 6 ISDN basic interface 7 ISDN exchange

Claims (1)

[Claims] 1. An ISDN basic interface (2B +
2) In multiple ISDN terminals accommodated on the bus,
When an arbitrary terminal A of the plurality of terminals establishes an outgoing connection, an arbitrary terminal B other than the outgoing terminal monitors a call control signal transmitted on the D channel, and a call is received in the call control signal. Personal information is stored in the terminal B, and the terminal B stores the personal information.
The ISDN terminal redialing method, characterized in that when the call is made to the called terminal C sent by the caller, the call is made by the stored called party information.