JPS62171363A - Call-back connection system - Google Patents

Abstract

PURPOSE:To call a last calling subscriber through an easy operation by a called subscriber after a call is finished by providing a registration memory area for storing calling subscriber identification information in a main memory device. CONSTITUTION:When a subscriber terminal SUB 4 originates to dial a telephone number and a subscriber terminal SUB 5 terminates, a central processing unit CPU 2 connects both SUBs 4 and 5 through a switch network SW 1 and also retrieves the extension number of the origination-side SUB 4 to store the extension number of the SUB 4 in the address of the SUB 5 in the registration memory area in the main memory device MM 3. When a call-back function button attached to a telephone set is put in one-touch operation successively to calling operation such as off-hook operation so as to call back the SUB 4 from the called-side SUB 5 after the line is released on the call between the SUB 4 and SUB 5, the CPU 2 detects that and reads the extension number of the SUB 4 out of the address of the SUB 5 in the registration area of the MM 3 and controls an SW 1 to connect the SUBs 5 and 4 with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a call-back connection system, and more particularly to a call-back connection system in which a called party calls back a caller at the other party after disconnection.

[Conventional technology]

Conventionally, in this type of exchange, when there is an incoming call, the calling party is asked for the subscriber number, and when calling back the previous caller immediately after hanging up and going on-hook, the subscriber number that was inquired is sent to the calling party. were all dialed.

[Problem that the invention seeks to solve]

The above-described conventional call-back connection system has the disadvantage that it is very cumbersome because the subscriber number of the person making the inquiry must be remembered and the number must be dialed.

[Means for solving problems]

The call-back connection method of the present invention provides an exchange having a central processing unit that performs exchange processing using a stored program method, a main storage device, and a receiving means for receiving caller identification information of a game party, wherein the main storage device A registration memory area for storing party identification information is provided, and the calling party's subscriber number, etc. is retrieved or received and registered in the registration memory area automatically during exchange connection processing or by operating a function button on the called subscriber terminal. However, when the called party makes a call and performs a specific operation after the call ends, the caller is called back using the caller identification information read from the registration memory area.

〔Example" Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the call-back connection method of the present invention, and FIG. 2 is a memory block diagram showing an example of the calling subscriber information registration memory area in the main storage device in FIG. 1. be.

In Figure 1, the storage program controlled exchange has a switch network I/network (hereinafter referred to as 5W) 1 and a central processing unit (5W).
CPU) 2, main memory device (MM) 3, SW
Subscriber terminal connected to I (hereinafter referred to as 5UB) 4.5. Trunk line I rank (hereinafter referred to as TRK) 6 and common line signaling device (
MM3 has a registration memory area shown in FIG. 2, and SLI B~, 4. ．． 5. ~ Correspondingly, the extension number of the calling subscriber terminal is stored.

Next, the operation of this embodiment will be explained.

First, in the extension interconnection, when a call is made from 5UB4 and dialed and the call arrives at 5UB5, as is generally known, CP [J 2
A connection is made between UB4 and UB5, and the extension number of calling side 5UB4 is searched, and the extension number of 5UB4 is stored in the address of 5UB5 in the registration memory area.

After the call between 5UB4 and 5UB5 ends and the line is released, the SLI 85 on the previously called side presses the call return function button attached to the telephone following a calling operation such as off-hook in order to call back 5UB4. With one-touch operation, C
PU2 detects this, reads the extension number of 5LIB4 from the address of 5UB5 in the registered memory area of MM3, controls SWI, and connects 5UB5 and SUB4.

In addition, for an incoming call from a trunk line, the called party's extension number and calling party number are sent by the common line signal via TRK6, so the called party's extension number and calling party's number are sent from C3E7. is given to CP LT 2. Here, if the called party number is 5UB4, CI"U2 is SWI
It controls the connection between 5UB11 and 'r' R,K6, and stores the calling line number sent by the common line signal in the registration memory area of MM3. At the same time as the above-mentioned extension interconnection, 5UB shown in Fig. 2 is connected to MM3.
The calling party number is stored in the registration memory area at address No. 4.

S1. After the call with the subscriber who called JB 4 and TRK 6 ends and the line is released, S U IE
', 4 performs a one-touch operation of the call return function button following a calling operation such as off-hook, similar to the above-mentioned extension interconnection, in order to make a call to the subscriber who made the previous call, cI) U
2 detects this, reads the MF recorded calling party number from the registered memory area of MM3, and instructs C3E7 to switch
1. Transmit a calling signal using the common line signaling method to the opposing station via TRK6. In the game, this calling number 13 is used to connect to the previously called subscriber.

In this embodiment, the calling party number is automatically stored in the registration memory area while the connection is being processed. However, if the SUB is a terminal with buttons such as a multi-function telephone, the called party number is stored in the registration memory area automatically during a call. It is also possible for the person to register the calling party number by operating the function button as necessary. For example, if 5UB4, 5 is used as a terminal of a multi-function telephone, and when making a call, one-touch operation of the function button will call back the last calling subscriber.However, if the terminal is a dial-type telephone, a short special number You may also dial.

I. Effects of the Invention] As explained above, the present invention provides a registration memory area in the main memory for storing caller identification information, so that after a call ends, the called party can easily perform the previous call operation. Since the calling subscriber can be called back, there is no need to remember the subscriber number of the other party and dial all of them.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the call-back connection method of the present invention, and FIG. 2 is a memory block diagram showing an example of the calling subscriber information registration memory area in the main storage device in FIG. 1. be. 1... Switch network (SW), 2... Central processing unit (CPU), 3... Main memory device (MM>,
4.5... Subscriber terminal (SUB), 6... Trunk line trunk (TRK), 7... Common line signaling equipment (C3E)
. '4゛Representative Patent Attorney Susumu Uchihara; \, -, Shi:jζSatoshi: ノCow 2 concave

Claims (1)

[Claims] In a switching system having a central processing unit that performs switching processing using a storage program method, a main storage device, and a receiving means for receiving caller identification information of a game party, the main storage device has a registered memory area that stores the caller identification information. Equipped with
During exchange connection processing, the calling party's subscriber number, etc. is retrieved or received automatically or by operating a function button on the called subscriber's terminal, and is registered in the registration memory area, and after the call ends, the called subscriber's number etc. 1. A call-back connection system characterized in that when a person makes a call and performs a specific operation, the caller is called back using the caller identification information read from the registration memory area.