JPH0548742A - Transfer control system for key telephone system - Google Patents

Abstract

PURPOSE:To perform outside line transfer by the same operation regardless of whether a telephone set at a transfer destination is an extension of a PBX or an extension of the key telephone system when the key telephone system is connected to the extension of the PBX. CONSTITUTION:A PBX extension number is added to the number schedule of the key telephone system to extend the schedule and a holding memory part 38 is provided in the memory of a main control part 34. Then when on outside line is held, its line wire number is stored in the holding memory part 38; when a dial number from the key telephone set where the outside line is held corresponds to the PBX extension, automatic answering to the outside line stored in the holding memory part 38 is performed to send a hooking signal out and then the dial number is sent out. Consequently, the key telephone set holds the outside line and the PBX extension number is dialed to perform transfer to the PBX extension; and the same operation with outside line wire transfer to another key telephone set in the key telephone device is realized and the operability of the transfer is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer control system for a key telephone device connected to a PBX extension line.

[0002]

2. Description of the Related Art Conventionally, in a key telephone device connected to a PBX extension line, when transferring an outside line during a call to a party accommodated in the PBX extension line, each button telephone is equipped with a hooking button to make a call during an outside line call. Press the hooking button on the dial to dial the party number of the PBX extension, or register the hooking operation and the party number in a specific button in advance and press the particular button during an outside line call to call the party of the PBX extension. I am trying to transfer to. When transferring an outside line to another key telephone in the key telephone device, the outside line during a call is put on hold and the transferred telephone is put on hold response, or the outside line during a call is put on hold and then transferred. I am trying to call an extension button telephone and transfer the extension.

[0003]

In the above-mentioned conventional key telephone device, the transfer operation is different between the case of transferring an outside line during a call to the PBX extension line and the case of transferring to another button phone in the key telephone device. However, there is a drawback that it causes an erroneous operation. In addition, when transferring the held outside line to the PBX extension, the hooking operation is performed after once responding to the holding call, so the PBX is held again here, and as a result, the call and the holding to the outside line are repeated. There is a drawback that it causes repetition and makes the other party uncomfortable.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a numbering control function unit which stores a reserved outside line number corresponding to the number of button telephones and a PBX extension as an outside line. The PBX extension number control unit is added and expanded to register the extension number of the PBX, the means for storing the extension number in the holding memory when the outside call is held, and the PBX extension number is dialed after the holding of the outside line. A means for capturing an external line stored in the holding memory unit and transmitting a PBX extension number after transmitting a hooking signal.

[0005]

Therefore, when transferring an outside call to the PBX extension, it is sufficient to hold the outside line and dial the corresponding PBX extension number. As a result, the transfer operation to the PBX extension and the button telephone in the button telephone device are performed. The transfer operation is the same as the transfer operation, and operability is improved.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention.
The key telephone device of the present embodiment includes key telephones 11 to 1
n, a button telephone interface 31 connected to each of the button telephones 11 to 1n, and an outside line interface 3 connected to the outside lines 21 to 2m and having a hooking function.
2. Stores a call path switch 33 that forms a call path between the key telephones 11 to 1n and the outside lines 21 to 2m or the key telephones 11 to 1n, a main control unit 34 that controls the entire apparatus, and a program of the main control unit 34. Program unit 35, PBX extension number control program unit 36 included in program unit 35, and memory unit 3 for storing data of main control unit 34
7. The holding memory unit 38 included in the memory 37.

Next, FIG. 2 is a diagram showing a connection state between the key telephone device and the PBX in this embodiment. In this embodiment, the extension number of the PBX starts with "2" and has three digits (2x
x), and the extension number of the key telephone device is a three-digit (1xx) number starting from "1". That is,
The numbering plan in the key telephone device of the present embodiment is 1: extension number 2: PBX extension number.

Next, the operation of the apparatus of the above embodiment constructed as above will be described. It is assumed that the key telephone 1n is connected to the outside line 2m through the call path switch 33 and is in the outside line communication state. When the hold button is operated on the key telephone during such an outside line call, the operation information is transmitted to the main controller 34 via the button telephone interface 31.
Transmitted to. The main control unit 34 performs a holding process based on the holding operation information, and stores the held outside line number in the holding memory unit 38.

Next, the dial operation is performed on the key telephone 1n. This dial operation information is similarly transmitted to the main controller 34 via the key telephone interface 31. The main control unit 34 starts processing the dial operation information based on the numbering plan. If the first 1st digit dial number is "2" corresponding to the PBX extension number, the control is transferred to the PBX extension number control program unit 36.

This PBX extension number control program section 36
When the control is started by executing the program (1), the area of the key telephone 1n in the hold memory unit 38 is first referred to. If an outside line number is stored in this area, a hold response process is executed for that outside line, and then the outside line interface 32 is controlled to send out a hooking signal and dial out the number corresponding to the PBX extension line. After that, the area of the corresponding button telephone 1n in the hold memory unit 38 is initialized and the process ends. If there is no suspended outside line, error processing is executed. For subsequent dials, the main control unit 34 performs the same processing as a normal outside line transmission.

[0011]

As described above, according to the present invention, when transferring an outside line during a call to the PBX extension, the outside line call can be held and then the PBX extension number can be dialed. The transfer can be performed by the same operation as the transfer to the key telephone, and as a result, the erroneous operation can be avoided. In addition, during the PBX extension transfer, the call and the hold for the outside line are not repeated many times, and the other party of the call is not uncomfortable.

[Brief description of drawings]

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

FIG. 2 is a diagram showing a connection relationship between a key telephone device and a PBX in the above embodiment.

[Explanation of symbols]

11-1n button telephone 21-2m outside line 31 button telephone interface 32 outside line interface 33 call line switch 34 main control unit 35 program unit 36 PBX extension number control program unit 37 memory unit 38 reserved memory unit

Claims (1)

[Claims] 1. At least one key telephone, an outside line interface that accommodates at least one outside line and has a hooking signal sending function, a changeable numbering plan control function unit, and a main control unit that controls the entire apparatus. In a key telephone device equipped with a PBX extension number control unit, a holding memory unit that can store the number of the held extension numbers and the number of PBX extensions are accommodated as external lines, and a PBX extension number control unit is added to the number plan control function unit.
A means for registering the extension number of the BX, a means for storing the extension number in the holding memory unit when holding the outside call.
Transfer control of the key telephone device, characterized in that when the PBX extension number is dialed after the outside line is held, the outside line stored in the holding memory unit is captured and the PBX extension number is sent out after sending the hooking signal. method.