JPS5963855A - Recalling method of calling subscriber - Google Patents

Abstract

PURPOSE:To connect a predetermined terminating subscriber only by pressing a calling button and to recall the calling subscriber when the terminating subscriber responds by connecting a recalling means to recall the calling subscriber at the response of the terminating subscriber. CONSTITUTION:An automatic telephone exchange accomodating a telephone set EXTA with a calling button and a terminating telephone set EXTB is provided with the recalling means to recall the calling subscriber at the response of the terminating subscriber. The calling means is provided with a service trunk 5 sending a call signal to the calling subscriber at the response of the terminating subscriber and a ringer trunk 6 sending a call signal to the terminating subscriber when the terminating subscriber's line becomes idle as the result of the supervisory of the terminating subscriber in busy. In addition, the terminating telephone set EXTB is provided with a display means displaying calling subscriber's information such as the calling subscriber's No.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a caller return system, and more particularly to a caller return system that automatically returns a caller when the called party answers in an automatic telephone exchange.

Hospital telephone exchanges often provide direct call services, such as a hospital patient calling a nurse. Traditionally, patients who receive this type of service either dial a special number after off-hooking a general-purpose telephone installed next to the radio, or off-hook a telephone with a call button and press the call button. A method is adopted in which a direct connection is made to a called telephone (for example, in an 8-meter nursing room), and the call state is entered when the called party (nurse) responds. However, this method has the disadvantage that the caller (patient) has to hang up the receiver and wait until the called party answers, and in particular, the longer the time until the answer, the more it may have a negative impact on the patient. There was a problem.

An object of the present invention is to connect to a previously challenged called party by simply pressing the calling button without going off-hook from a telephone equipped with a calling button, and to return the caller when the called party answers. The object of the present invention is to solve the above-mentioned drawbacks and problems and provide a callback system for the original caller.

The caller return system according to the present invention is implemented in an automatic telephone exchange that accommodates a telephone with a calling button and a called telephone.
The present invention is characterized by comprising a call-back means for calling back the calling party when the called party answers. In addition, the call return means includes a service trunk that sends a paging signal to the calling party when the called party answers, and a service trunk that monitors the status of the called party when the called party is busy and returns the called party when the called party becomes free. The device is characterized in that it includes a ringer trunk for sending out a calling signal. Furthermore, the called telephone set is characterized in that it is equipped with a display means for displaying calling party information such as a calling party number.

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

The figure is a block diagram showing an embodiment of a space-division telephone exchange to which the caller return system of the present invention is applied. In the figure, a telephone (hereinafter referred to as EX〒人) 1 is equipped with a call button 10 via a line circuit (hereinafter referred to as LO) 2 on the input side and output side of a communication path switch (hereinafter referred to as SW) 3, respectively. A telephone with caller display (hereinafter referred to as 1fXTB) 8 is accommodated via a service trunk (hereinafter referred to as 8V's') 5. Note that a plurality of LO2 and 8VT5 are accommodated depending on the number of callers and direct connection traffic. Also, on the output side of the SW3, there is a callback ringer trunk (hereinafter oBi'i:T).
) 6 and a relay stand (hereinafter referred to as A'F'[') 7 are accommodated, and furthermore, a central processing unit (hereinafter referred to as 0PU) 4 is connected to the LO2゜SW3, 8VT5, 0BRT6 and A'["I'7 for predetermined operation. The sequence control of the SV'l is performed.
'5 transmits information regarding the EXTA1 (calling party number or calling room number, etc.) along with a calling signal to the IXB8 according to instructions from the 0PU4, detects a response from the EXTB8, and sends the information to the 1fXTA1. It has the function of sending out a calling signal. Maku, the above 0BRT 6 is the above EXT
When B8 is busy, the EXT
It has a function of monitoring the status of B8 and sending a call signal to the EXTu8 when it becomes vacant.

Next, the operation of this embodiment will be explained. Caller is EX
If the call button 10 is pressed without off-hooking T person 1, C2 operates. OP U 4 scans the LO2 using a generally known method to detect the calling state of the EXTAL, confirms the vacant state of the 8V T5 as planned in advance, and closes the link of S'W3. Because
The SV'l'5 sends a paging signal to the EXTB'8 and also sends information regarding the EXTB'8. In the IEX'l'B 8, the bell rings and the above information is displayed.b When the called party confirms the display and responds, the 5VT5 detects this and sends a calling signal to the link (2) according to the instruction from the 0PU4. The TmX〒A1
The bell rings. If the caller responds to this callback, the EX'l'
One call can be made with B8. If multiple 8V'l's including 5VT5 are busy, the 0PU4 scans all the 8VTs in a generally known manner to find out which ones are busy, and closes the link of the 8W3. Therefore, the EX'l' system 1 is connected to the ATT7 via the LO2, +7 link. The handler is A'l"I'7
Operate the link ■, and connect the 'BXT via L02.
Since a calling signal is sent to the AI, a call can be made between the caller and the operator based on the caller's response. Also, if the called party is busy, the CPU 4 similarly closes the 8W3 link (■) and connects the EX'l'person 1 to the OBR'l'6 via the LO2 and the link (■). Connect.0BRT
6 monitors the status of the IXTB 8 via the 8VT 5 at a predetermined period according to instructions from the IPU 4. During this monitoring, when Bs in the nx becomes vacant, the OBR 6 reserves the link , said 5VT5
A call signal is sent to the EX'l'B8 via the EX'l'B8. In response to the called party's response, the OBR'L'6 connects the link ■, LO
A calling signal is sent to the IXT system 1 via the IXT system 2. The OBR'l'6 is restored by the caller's response and the 0PU4
Start. Since the 0PU4 opens the link (2) and closes the link (2), the F:XTA1-LO
2-Link ■-8V 'I'5-EX'FB 8 (2
) The path enables communication between the calling party and the called party.

Note that the calling signal sending function, FiX'I'n status monitoring function, etc. of the 5VT5 and OBR'F6 can be easily realized using conventional techniques.

This example does not limit the invention. That is,
Although the present invention is applied to a space-division telephone exchange, it may also be applied to a time-division telephone exchange. In addition to telephone exchanges for hospitals, the present invention may also be applied to telephone exchanges for hotels, for example, to provide room service from the front desk to guest rooms, call bellhops from guests, etc. When the call button is pressed, a direct line connection (hotline service) is established, and when the call button is not pressed, a general connection via dialing may be established.

As is clear from the above explanation, according to the caller return method of the present invention, the caller presses the call button while on-hook and is automatically called back when the called party answers. When responding to a call back, the user can go off-hook for the first time and talk to the called party or a handler such as an attendant. Therefore, there is an effect that there is no need to pick up the handset and wait for the other party's response from the time the call is made. Furthermore, the present invention has an extremely wide range of application, as it can be applied not only to telephone exchanges for hospitals and hotels, but also to hotline services of general telephone exchanges.

[Brief explanation of the drawing]

The figure is a block diagram showing an embodiment of a space-division telephone exchange to which the caller return system of the present invention is applied. In the figure, 1...Telephone EX with call button
T person, 2... Line circuit L0, 3...
Call path switch 5W14...Central processing unit OP
U, 5...Service trunk SV'l'16.
...Callback Ringer Trunk OBR'l"
, 7... Attendant stand A'l'T, 8... Telephone with caller display 1) l'B

Claims (1)

[Scope of Claims] (1) An automatic telephone exchange accommodating a telephone with a calling button and a called telephone, characterized by comprising means for returning the caller when the called party answers. Caller return method. (2. In the caller call-back system described in Claims Section (1), the call-back means includes a callee, a service trunk that sends a call signal to the caller when the evaluator responds, and a service trunk that sends a call signal to the caller when the called party is busy A caller call return system characterized by comprising a ringer trunk that monitors the status of the called party and sends a ringing signal to the called party when the called party becomes free. (3) Patent Claim Scope of the invention In the caller callback method described in paragraph (1), the called telephone is equipped with a table or display means for displaying caller information such as a calling party number. method.