JPH057249A - Private branch exchange - Google Patents

Abstract

PURPOSE:To improve the convenience by transferring the incoming call to a calling side extension, and selecting whether or not the incoming call is transferred from a called side extension to another extension in accordance with a selecting signal sent from the called side extension. CONSTITUTION:Extension telephone sets 1a-1n constituted of, for example, an electronic key telephone are connected through line circuits 2a-2n of an exchange respectively to a channel network 3. To the channel network 3, plural trunk lines are respectively connected through trunk circuits 4a-4m. Further, to the line circuits 2a-2n, the channel network 3, and the trunk circuits 4a-4m, a central control unit 6 and a storage device 7 are connected through a control data bus 5. Prior to transferring the incoming call from the called side extension to another extension, the effect that the incoming call is transferred is informed to the calling side extension, and it is selected whether or not the incoming call is transferred from the called side extension to another extension in accordance with a selecting signal sent from the calling side extension based on the information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a private branch exchange having a transfer service function for transferring an incoming call sent from an extension line to another extension line.

[0002]

2. Description of the Related Art Recently, various service functions have been enhanced in a private branch exchange (PBX). Transfer service is one of the service functions. This transfer service function transfers an incoming call for one extension to another extension according to an instruction from the extension, and is called absent call transfer, busy transfer, response delay transfer, etc. depending on the transfer mode. .. By the way, in this type of transfer service, the user of the extension on the calling side does not have the option to enjoy the service, and when an incoming call is made to the extension for which the transfer service is set, the incoming call is always issued separately. Transferred to the extension.

However, the user of the extension on the calling side may not want to be transferred to another extension, so that it is not always a convenient service. In particular,
When such a transfer service function is set for the extension of the call destination, the user of the extension of the caller cannot use the camp-on service, step call service, message service, message service, etc. of the extension of the call destination. There was a problem.

[0004]

As described above, in the transfer service function provided by the conventional private branch exchange, when an incoming call is made to the extension for which the transfer service is set, the incoming call is always transferred to another instructed extension. Therefore, it is inconvenient if the user does not want to be transferred to another extension, and there is a problem that the camp-on service, step call service, message service, message service, etc. of the extension of the call destination cannot be used.

The present invention has been made to solve the above problems, and provides a private branch exchange with improved convenience by giving the user of the extension on the calling side the option to enjoy the transfer service. It is intended to be provided.

[0006]

The present invention, which achieves the above object, provides a private branch exchange having a transfer service function for transferring an incoming call sent from a calling extension to another extension. Prior to transferring the incoming call from the extension of the called side to another extension, an informing means for informing the extension of the calling side that the incoming call is to be transferred, and the calling side based on the notification by the informing means And selecting means for selecting whether to transfer the incoming call from the called extension to another extension according to a selection signal sent from the extension.

[0007]

In the present invention, prior to transferring the incoming call from the called side extension to another extension, the calling side extension is notified that the incoming call is to be transferred, and the calling side extension is sent based on the notification. Since it is selected whether to transfer the incoming call from the extension of the called side to another extension according to the selection signal, the user of the extension of the calling side has the option to enjoy the transfer service, which improves convenience. ..

[0008]

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

FIG. 1 is a diagram showing the configuration of a private branch exchange according to an embodiment of the present invention.

As shown in FIG. 1, extension telephones 1a, 1n, which are, for example, electronic key telephones, are connected to a speech path network (SW) 3 via line circuits (LC) 2a, 2n of an exchange, respectively. ing. In addition, a trunk circuit (TRK) 4 is provided in this communication path network 3.
A plurality of station lines are respectively connected via a and 4m.

A central control unit (CC) 6 and a storage unit (MEM) 7 are connected to the line circuits 2a to 2n, the communication network 3, and the trunk circuits 4a to 4m via a control data bus 5. There is.

The central control unit 6 stores information for call control between the line circuits 2a, 2n and the trunk circuits 4a, 4m according to the operation program and various control information stored in the storage unit 7. It transmits and receives, and controls the communication path formation between the extension lines and between the extension line and the office line by the communication line network 3.

Further, in order to perform transfer control, a part of the memory area of the storage device 7 is provided with service types such as extension number (called extension), transfer destination extension number, absent transfer, busy transfer, and response delay transfer. There is a table registered corresponding to and
The central controller 6 constantly monitors this table.

Next, the transfer control operation of the private branch exchange thus constructed will be described with reference to the flow chart shown in FIG.

When a dial number is input from the extension telephones 1a to 1n (S201), it is first determined whether the extension call or the outside call is made based on the input dial number (S202).
).

If the call is an outside call, it has nothing to do with the service function of the present invention, and therefore a normal outside call process is performed (S203).

If it is an extension call, the table of the storage device 7 is searched based on the input dial number, and it is confirmed whether or not the transfer service is set for the extension of the called side (S204).

When the transfer service is not set for the called extension, normal extension call processing is performed (S205).
).

When the transfer service is set for the extension on the called side, the fact is notified to the extension on the calling side (S207). This is performed by, for example, outputting a warning sound such as a warning tone on the extension telephone of the extension of the calling side, or displaying "I will be transferred to XX" on the LCD.

Here, when the user of the extension telephone of the extension on the calling side wants to receive the transfer service, he or she presses a predetermined special number dial or a predetermined function key after hooking. Then, a selection signal to that effect is sent to the private branch exchange side (S208), and the transfer processing is performed accordingly (S209).

When the user of the extension telephone of the calling side extension does not want to receive the transfer service, he / she presses a predetermined special number dial different from the above after pressing and a predetermined function key. Then, a selection signal to that effect is sent to the private branch exchange side (S208).

In this case, in the private branch exchange, first, a timer set to a predetermined time is started (S210), and the designation of the camp-on service, step call service, message service, and message service is input from the extension of the calling side. (S211 to 214).

In the meantime, the user of the extension telephone of the extension of the calling side designates the service he / she wants to receive by using a function key or the like.
When a signal designating a service is received from the extension on the calling side, the corresponding service processing is performed (S215).
~ 218).

On the other hand, if the service is not designated within the time set by the timer (S219), the series of processes is terminated.

As described above, in the present embodiment, even when the transfer service is set for the extension on the called side, the extension on the calling side can reject it and receive other services such as a camp-on service. Therefore, the convenience is extremely high.

[0026]

As described above, according to the private branch exchange of the present invention, prior to transferring the incoming call from the called extension to another extension, the calling extension is notified that the incoming call is forwarded. Then, based on the notification, it is selected whether to transfer the incoming call from the called extension to another extension according to the selection signal sent from the calling extension, so that the user of the calling extension can enjoy the transfer service. You have the option to do it, improving convenience.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a private branch exchange according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation for realizing a service function of the invention.

[Explanation of symbols]

 1a, ~ 1n ... Extension telephone 2a, ~ 2n ... Line circuit (LC) 3 ... ... Call path network (SW) 4a, ~ 4m ... Trunk circuit (TRK) 5 ......... Control data bus 6 ......... Central control Device (CC) 7 ......... Memory device (MEM)

Claims (1)

Claim: What is claimed is: 1. A private branch exchange having a transfer service function for transferring an incoming call sent from an extension of a calling side to another extension of the called side. From the caller extension to the caller extension prior to the transfer from the caller to another extension, and a selection signal sent from the caller extension based on the notification by the notifying means. A private branch exchange comprising: selection means for selecting whether to transfer the incoming call from the called extension to another extension.