JPS61154252A - Multi-line telephone set callback system in electronic exchange - Google Patents

Abstract

PURPOSE:To get a callback service through an optional line by reading a telephone set registering the callback service and a line connected to the said telephone set from a storage device in making the callback service and applying callback to a telephone set only registering the callback service. CONSTITUTION:A multi-line telephone set A1 registers the callback service by using a line alpha. In this case, a central processing unit CC 7 stores the information of the line alpha and the telephone set A1 connected to the line alpha to a main storage device MU 8. The multi-line telephone set A1 registers the callback service and restores itself. In making the callback service, the central processing unit CC 7 reads the information of the line alpha and the telephone set A1 connected to the line alpha stored in the main storage device MR 8 to connect the multi-line telephone set A1 and the line alpha for callback service.

Description

TECHNICAL FIELD The present invention relates to a multi-line telephone call-back system in an electronic exchange.

(Conventional environment) As shown in Figure 4, multi-line telephones have multi-number buttons on each telephone 1, 2, and 3, for example.
For example, when a call arrives at number ``200'', all telephones making up the multiline will receive a call at 1°2.3'200''.
Incoming calls will be displayed on the lamp.

Therefore, this incoming call can be answered by pressing the "200" button from either telephone 2 or telephone 3.

Figure 5 shows multi-line telephones 1, 2.3 and the switch network (
SW) s and each telephone (A) 1
．． (B)2. (C) 3 is a multi-line processing device (HC)
4 to three lines α, β, r.

(Prior art) Conventionally, in the case of ordinary telephones, one telephone was connected to one line for call-back service. All I had to do was recognize that it was okay. However, when a call-back service is provided by a multi-line telephone, all the telephones making up the multi-line can respond, and even telephones that have not been set up for call-back can respond.

(Object of the Invention) The object of the present invention is to provide a multi-line telephone in which general calls are received simultaneously on all multi-lines, and call-back calls are received only on the telephone set for call-back among the multi-lines. The purpose of the present invention is to provide a multi-line telephone call-back system.

(Structure of the Invention) According to the present invention, an electronic exchange that handles telephones that can select from a plurality of lines includes a telephone in which a call-back service is registered and a storage device that stores lines connected to the telephone; A multi-line telephone call in an electronic exchange, characterized in that when performing a return service, the telephone that has registered the service and the line connected to the telephone are read from the storage device, and the call is returned only to the telephone that has registered the call-back service. A return method is obtained.

(Example) Next, embodiments of the present invention will be described with reference to the drawings.

FIGS. 1, 2, and 3 show connection transition diagrams according to an embodiment of the present invention. 1. Multi-line telephone (A) 1 registers a call-back service using line α. At this time, the central processing unit y! !
, (CC) 7 stores in the main memory unit (MU) 8 the line α and the multi-line telephone (A) 1 connected to the line α at the time of the call-back service. (Fig. 1) 2. Multi-line telephone (A) 1 registers the call-back service and restores the service. (Figure 2) 3. Central processing unit (cc) when performing callback service
At step 7, the line α stored in the main memory unit (MU) 8 and the telephone (A) 1 connected to the line α are read out, and the multi-line telephone (A) 1 and the line α are connected to perform a callback. .

(Figure 3) If you do this, for example, if telephone (A) 1 registers a call back on multiline β (for example, number 200 in Figure 4 connects with button 201), it will remember "A" and 7β. and calls back telephone (A) 1 through multi-line β.
If registered using multiline γ, 6A# and "γ" can be stored and the telephone set (A) 1 can be arbitrarily set to call back through multiline r.

(Effects of the Invention) The present invention has the advantage that a callback service can be received using any line from a multi-line telephone.

[Brief explanation of drawings]

1, 2, and 3 are connection transition diagrams of an embodiment of the present invention, and FIGS. 4 and 5 are explanatory diagrams of a multi-line telephone and their connection diagrams. 1.2.3...Extension subscriber, 4...Multi-line 8 processing device, Death...Switch network, 6...Outgoing trunk, 7... ...Central processing unit, 8...
・・Main storage device, 9 ・・・Ringer trunk, 1
0...Ringer-0 Figure 1 Line 2 Figure Niri! λ 2'4 3 Syv 3rd figure

Claims (1)

[Claims] An electronic exchange that handles telephones that can select from multiple lines has a telephone that has registered a call-back service and a storage device that stores the lines connected to the telephone, and registers the service when performing the call-back service. 1. A multi-line telephone call-back system in an electronic exchange, characterized in that the telephone set and the line connected to the telephone set are read from the storage device, and the call is made only to the telephone set that has registered a call-back service.