JPH05207158A - Transfer system in simultaneous speech communication - Google Patents

Abstract

PURPOSE:To make one line wire a transfer state to another extension by processing the forcible disconnection of other extension in accordance with the one transfer operation of the extension during the simultaneous speech communication of the one line wire and the plural extensions. CONSTITUTION:When the one transfer operation of the extensions EXTA-EXTG is executed during the simultaneous speech communication of the one line wire and the plural extension EXTA-EXTG in TV conference, etc., other extensions are forcible connection-processed and restored. Then, one of the extensions EXTA-EXTG corresponds to the line wire by one to one and the one line wire can be the transfer state to another extension during TV conference, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone exchange system, and more particularly, to a simultaneous call transfer system of a dealing call system used for financial transactions in financial institutions such as banks and securities companies.

[0002]

2. Description of the Related Art Conventionally, when a plurality of extensions are talking to one outside line (conference call, interrupt call, etc.),
The outside line could not be transferred to another extension.

That is, conventionally, as shown in FIG. 4, when a plurality of extension lines (A to G) are communicating with one outside line (S41), among the plurality of extension lines (A to G). Even if any one performs a transfer operation, the outside line is not transferred to the other extension line. Therefore, for example, the extensions B to G are restored (the extension B to the extension G are terminated), and the conference trunk MET.
When the extension A performs a transfer operation in the state of mutual communication between the extension A and the office line trunk COT (S42) not via the
The outside line is temporarily held and is connected to a trunk (HST) that outputs a holding tone. On the other hand, the extension A becomes ready to transfer the outside line to the other extension, and is connected to the trunk (DT) that sends the dial tone and listens to the dial tone (DT).

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In a dealing call system, a simultaneous answering / calling of an extension to an incoming call (external line) and an interrupting call with a plurality of extension lines, etc. Calls to multiple extensions often occur at the same time. However, conventionally, as described above, 1
When an incoming call from one external line is simultaneously in a call state with a plurality of internal lines, even if the internal line transfers one external line to another internal line, the external line cannot be transferred.

An object of the present invention is to provide a call from one external line even when a plurality of internal lines are talking at the same time.
Another object of the present invention is to provide a transfer method in a simultaneous call in which an outside line is transferred to another extension line by an operation of transferring any one extension line during a call.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to perform a transfer operation by any one of a plurality of extensions while one external line and a plurality of extensions are simultaneously talking, and transfer from the extension that has performed the transfer operation. When the information is received, the extension other than the extension for which the transfer operation is performed is subjected to the disconnection process, and the extension for which the transfer operation is performed can be achieved by listening to the dial tone and enabling the dialing of the transfer destination extension.

Also, at this time, the outside line listens to the holding tone until one extension line completes the transfer operation.

[0008]

When any one of the plurality of extension lines performs a transfer operation during a simultaneous call between one outside line and a plurality of extension lines, the disconnection process is forcibly performed on the extension line other than the extension that has performed the transfer operation. To do. As a result, the internal line and the external line that have performed the transfer operation are in a one-to-one state. After that, one external line can be transferred to another internal line by the conventional processing.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a relay system diagram showing the configuration of the dealing call system of the present invention.

In FIG. 1, NW is a network for setting a communication path, EXTA to EXTG are extensions (extension terminal devices), LIN is an extension interface for interfacing between extensions (EXTA to EXTG) and NW, and COT is a public network. An office line trunk for interfacing with the NW, a MET for a conference trunk, a CPU for a central processing unit for controlling the entire dealing telephone system, and an MM for storing programs, tables and various data for controlling the dealing telephone system. Storage device, BUS is CP
A control system bus for transferring data between U and MM is shown.

The dealing telephone system of the present invention has substantially the same function as a normal private branch exchange.

2 and 3 are state transition diagrams for explaining the operation of the present invention.

The operation of the present invention will be described below with reference to FIGS.

When a plurality of extensions EXTA to EXTG are busy for a call received from one external line (S21), the CPU monitors transfer information from all the extensions EXTA to EXTG during the call. For example, at this time the extension EXT
When A performs the transfer operation and the CPU receives the transfer information from the extension EXTA, the extension EXTB to EXTG are forcibly restored, the call path is disconnected, and the busy tone indicating that the call is ended. BT sending out
, And sends a busy tone to the extension lines EXTB to EXTG.

On the other hand, an incoming call from an outside line is connected to the trunk HST which sends out a holding tone and put in a holding state. The extension EXTA which has performed the transfer operation listens to the dial tone DT indicating that the external line can be transferred to the other extension (S22). After that, even if the extension lines EXTB to EXTG are restored (handset down),
The state of the extension EXTA and the extension is maintained (S23).

Thereafter, the conventional transfer processing is performed, and one external line can be transferred to another internal line.

A state in which a plurality of extension lines EXTA to EXTG are busy for an incoming call from one outside line (S21).
At this time, when the extension lines EXTB to EXTG perform a recovery operation, the CPU sets the communication path between the extension line and the extension line EXTA. (S31). After that, when the extension EXTA performs a transfer operation, the conventional transfer processing is performed, and one outside line can be transferred to another extension line.

[0019]

As described above, according to the present invention, even if a plurality of extensions are simultaneously talking to an incoming call from one outside line via the conference trunk, any one of the plurality of extensions can be simultaneously called. When one performs a transfer operation, the outside line can be put into a transfer state.

[Brief description of drawings]

FIG. 1 is a relay system diagram showing a dealing call system of the present invention.

FIG. 2 is a state transition diagram (1) for explaining the operation of the present invention.
Is.

FIG. 3 is a state transition diagram (2) for explaining the operation of the present invention.
Is.

FIG. 4 is a state transition diagram illustrating a conventional operation.

[Effect of code] NW network (call path) CPU central processing unit MM storage device LIN extension interface COT office line trunk MET conference trunk HST hold tone transmission trunk A to G extension (extension terminal) BT busy tone (disconnection tone) trunk DT Dial tone trunk

Claims (1)

[Claims] 1. A transfer operation is performed when any one of the plurality of extensions performs a transfer operation and a transfer information is received from the extension that has performed the transfer operation, while one outside line and a plurality of extensions are simultaneously talking. A transfer method in a simultaneous call characterized by performing a disconnection process on an extension other than the extension so that the extension that has performed the transfer operation can transfer the outer extension to another extension.