JPH0225145A - Call waiting system - Google Patents

Abstract

PURPOSE:To prevent the deterioration in the ineffective holding and incoming call completion rate of a communication line relating to an incoming call during talking by stopping a call waiting function prescribed time elapses from the start of the function. CONSTITUTION:Suppose that a subscriber 2 is in the talking state with a subscriber 3 via a set channel p1, then in the case of an incoming call from a subscriber 1 to the subscriber 2, a central controller 12 starts the call waiting function 121 by referencing a subscriber data 132 to the subscriber 2 in a main memory device 13. The started call waiting function 121 holds the channel p1, sets channels p2, p3 to connect the subscribers 2, 3 via a call waiting trunk 17 to start a timing section 122. The timing section 122 starts counting and when a prescribed time elapses, the call waiting function is stopped to start an automatic answering telephone section 123.

Description

[Detailed Description of the Invention] [Summary] Regarding the improvement of the call waiting system provided in the exchange, it is possible for a subscriber who is eligible to use the call waiting function to receive communication regarding an incoming call during a call even if the subscriber does not answer the incoming call during the call. In order to prevent lines being held inactive and the drop in call completion rate as much as possible, subscribers who are eligible to use the call waiting function receive a call from another subscriber while they are on the phone, and the call waiting function is disabled. A call starts when it is activated and starts timing and detects that a predetermined amount of time has elapsed before detecting a predetermined action that a subscriber performs to respond to another subscriber. The waiting function is configured to be activated and deactivated, and a timing means is provided for activating another incoming call processing means for performing predetermined call processing for incoming calls from other subscribers.

[Industrial application field]

The present invention relates to an improvement in a call waiting system provided in an exchange.

One of the functions of the increasingly diversified switching equipment is that when a call arrives from another subscriber during a call, a predetermined signal tone (
A call waiting function that superimposes an incoming call sound (hereinafter referred to as an incoming call display tone) on a call to display an incoming call to the called party who is currently talking has been widely adopted.

[Conventional technology]

FIG. 4 is a diagram showing an example of a conventional electronic exchange, and FIG. 5 is a diagram illustrating the call waiting processing process in FIG. 4.

4 and 5, a central control unit (CG) 12 constituting the electronic exchange a1 is equipped with a call waiting function (CWF) 121, and a main memory (MM) 1
Subscriber data indicating the attributes of the subscriber 2 accommodated in the electronic switching equipment installed in the SD card 131
It is assumed that this indicates that the user is qualified to use the call waiting function (CWF) 121.

In FIGS. 4 and 5, it is assumed that subscriber 2 is in a conversation state with another subscriber 3 accommodated in electronic exchange 1 via communication path p1 set in network (NW) 11 ( Figure 5 gsT1).

In this state, other subscribers 4 accommodated in the electronic exchange 1
When a call arrives from subscriber 2 (step S1), central controller (CC) 12 refers to subscriber data (SDz) 131 corresponding to subscriber 2 in main memory (MM) 13,
When it is determined that the subscriber 2 is eligible to use the call waiting function (step S2), the call waiting function (CWF) 121 is activated.

Activated call waiting function (CWF) 121
calls paths pl set in network (NW) 11 and sets up communication paths p2 and p3, and connects subscribers 2 and 3 to call waiting trunks (CW).
T) 17, and transmits the incoming display tone from the call waiting trunk (CWT) 17 to subscribers 2 and 3 by superimposing it on the voice signal from the interlocutor (subscriber 3), and also transmits the incoming call display tone to the subscribers 2 and 3 via the call path p4. and sets up a communication path p, and returns the ringing tone generated by the signal sound source 18 to the subscriber 4 (state 5T2).

When the subscriber 2 who has heard the incoming call display tone performs hooking as a predetermined response operation to the incoming call, for example,
The call waiting function (CWF) 121 releases the communication paths pz % p3 and p in the network (NW) 11, sets up the communication path p4, and makes the subscriber 2 available to respond to the subscriber 4 (state 5T3). ).

[Problem to be solved by the invention]

As is clear from the above explanation, in conventional electronic exchanges, the subscriber 4 who receives a call from the subscriber 2 who is talking will not be able to receive the call unless the subscriber 2 who hears the incoming call display tone performs a predetermined response operation (hooking). , it is not possible to talk to subscriber 2 for any length of time and the ringtone continues to be heard, the communication line for subscriber 4 is held invalidly, and the call completion rate for subscriber 4 decreases. there were.

The present invention makes it possible to prevent as much as possible the suspension of communication lines related to incoming calls while the subscriber is eligible to use the call waiting function, and the reduction in the call completion rate, even if the subscriber who is eligible to use the call waiting function does not answer the incoming call. The purpose is to

[Means to solve the problem]

FIG. 1 is a diagram showing the principle of the present invention.

In FIG. 1, 100 is an exchange to which the present invention is applied;
121 is a call waiting function provided in the exchange 100, 2 is a subscriber who is eligible to use the call waiting function 121, 3 is a subscriber who is on a call with subscriber 2, and 4 is another call received by subscriber 2 who is on a call. The subscriber 300 is another pending call processing means for the pending call.

200 is a timing means provided in the exchange 100 according to the present invention.

[Effect]

The timing means 200 receives a call from another subscriber 4 during a call to the subscriber 2, and activates the call waiting function 12.
Starts timing after subscriber 1 is activated and detects that a predetermined time has elapsed before detecting a predetermined operation performed by subscriber 2 to respond to another subscriber 4. In this case, the call waiting function 121 is activated and deactivated, and the other incoming call processing means 300 is activated in response to an incoming call from another subscriber 4.

Other services provided by the incoming call processing means 300 may include, for example, an answering machine service or a call transfer service.

Therefore, even if a subscriber who has heard the incoming call display tone due to the call waiting function does not perform any response operation for other subscribers, if a predetermined time elapses, the incoming call This prevents the communication line from being held invalid for other subscribers who receive a call to the subscriber who is currently talking, and prevents a drop in the call completion rate.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a diagram showing an electronic exchange according to an embodiment of the present invention, and FIG. 3 is a diagram illustrating the call waiting processing process in FIG. 2. Note that the same reference numerals refer to the same objects throughout the plan.

In FIG. 2, the electronic exchange 1 is shown as the exchange 100 in FIG. 1 as described above, and an answering machine (ABF) 123 is shown as the other waiting call processing means 300 in FIG. (CC) 12, and further includes a timing section (TM) 122 as timing means 200 in FIG.
It is located inside.

In FIGS. 2 and 3, a subscriber 2 who is eligible to use a call waiting function (CWF) 121 is accommodated in an electronic exchange l via a communication path p1 set within a network (NW) 11. Assume that the subscriber 3 is in a conversation state with another subscriber 3 (state 5TI in FIG. 3).

In this state, other subscribers 4 accommodated in the electronic exchange 1
When a call arrives from subscriber 2 (step S1), central control unit (CC) 12 stores main memory (MM)
Subscriber data (SDz) 1 corresponding to subscriber 2 in 13
32, when it is determined that the subscriber 2 is eligible to use the call waiting function and the answering machine aWQ (step S2), the call waiting function (CWF
) 121.

Activated call waiting function (CWF) 121
puts the communication path pl set in the network (NW) 11 on hold, sets up the communication paths p2 and p3, and connects subscribers 2 and 3 to a call waiting trunk (CWT).
) 17, and the call waiting trunk (CWT) 17 transmits the incoming display sound to subscribers 2 and 3 by superimposing it on the voice signal from the interlocutor (subscriber 3), and also connects the call path p4. The system makes a reservation and sets a call path p, returns the ringing tone that generates the signal tone 'rA18 to the subscriber 4, and activates the timing section (TM) 122 (condition fi
sT2).

Activated Timing Section (TM) 122 C. The subscriber 2, who started timing and listened to the incoming call display tone, waits for a predetermined period of time without performing the answering operation for the incoming call during a call. (for example, 10 seconds) (Step 7 S4), the timing section (TM) 122
starts/stops the call waiting function (CWF) 121 and starts the answering machine (ABF) 123.

Deactivated call waiting function (CWF) 1
21 releases the communication paths p2 to p set or reserved in the network (NW) 11, re-establishes the communication path pl, and connects the subscribers 2 and 3 to the communication path p during the call. state (state UST1).

On the other hand, the activated answering machine (ABF) 123 connects the communication path p within the network (NW) 11.

At the same time, it captures the trunk (BWT) 111, connects it to the exchange with answering machine function 310 via the middle 81 line 400, and transmits the signal necessary to record the message for the answering machine. , and the network (N
W) Set up a communication path p6 in 11 and connect the voice response trunk (
ART) 110 generated guidance for answering machines,
For example, send a message to subscriber 4 saying, ``The caller you called is currently out of the office.If you have a message, we will record it, so please speak after you hear the tone.''gST4) , when the guidance has been sent out, the communication path p is released and the communication path pq is set.State 5T5
).

In the exchange with answering machine function 310 , when the central controller (CG) 312 receives a signal arriving from the trunk line 400 via the trunk (BWT) 314 , the signal is sent via the network (NW) 311 to the trunk (BWT) 314 .
and a message storage device (DK) 315.

Thereafter, messages sent by subscriber 4 are sent to JA machine 310 with answering machine function via electronic exchange 1 and trunk line 400.
and stored in the message storage device (DK) 315. Subscriber 4, who has finished recording the message, releases the call to subscriber 2.

In addition, in GST2, the timing section (TM) 122
If the subscriber 2 who has heard the incoming call display tone performs hooking as a response operation before detecting the elapse of a predetermined time (10 seconds), the call waiting function (CWF) is activated.
) 121 releases the communication paths p2, p8, and p in the network (NW) 11 and uses the communication path p4 as described above.
is set, the subscriber 2 is enabled to respond to the subscriber 4, and the timing section (TM) 122 is activated and deactivated.

As is clear from the above description, according to this embodiment, if the subscriber 2 who has heard the incoming call display tone does not perform a response operation (hooking) and a predetermined time (10 seconds) has elapsed, the subscriber Person 4 is voice response trunk (ART) 1
After listening to the answering machine guidance generated by 10,
Messages can be recorded if necessary, and the subscriber 4 is prevented from continuing to listen to the ringing tone for any length of time.

Note that FIGS. 2 and 3 are only one embodiment of the present invention, and, for example, message recording is limited to that performed by an exchange with an answering machine function 310 provided independently of the electronic exchange 1. Although many other modifications may be considered, such as providing a message recording function in the electronic communication Iaai itself, the effects of the present invention will not change in any case. Further, the services provided by the other incoming call processing means 300 are not limited to the illustrated answering machine service,
Many other modifications may be considered, such as a call forwarding service that transfers and connects the subscriber 4 to another predetermined subscriber, but the effects of the present invention do not change in any case.

〔Effect of the invention〕

As described above, according to the present invention, in the exchange, when a subscriber who has heard the incoming call display tone by the call waiting function does not perform a response operation for other subscribers, if a predetermined time elapses, the call is interrupted. Another predetermined service is provided to the incoming call of the subscriber who is talking, thereby preventing the communication line from being held invalid for another subscriber who received a call to the subscriber who is currently talking, and preventing a drop in the call completion rate.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the principle of the present invention, FIG. 2 is a diagram showing an electronic exchange according to an embodiment of the present invention, FIG. 3 is a diagram illustrating the call waiting processing process in FIG. 2, and FIG. FIG. 5 is a diagram illustrating an example of a conventional electronic exchange. FIG. 5 is a diagram illustrating the call waiting processing process in FIG. 4. In the figure, ■ is an electronic exchange, 2.3 and 4 are subscribers, 11 and 311 are networks (NW), 12 and 312 are central control units (CC), 13 and 313 are master/L1 devices (MM), l 4 to 16 are subscriber circuits (SLC), 17 is a call waiting trunk (CWT), 18 is a signal sound source, 110 is an audio response trunk (ART>, l 11 and 314 are trunks (
BWT), 121 is the call waiting function (CW
F), 122 is the timing section (TM), 123 is the answering machine section (ABF), 31 and 132 are subscriber data (SD2 0 is the timing means, 00 is the electronic exchange tower I 艷゛ki 2 ■ Li Dong υ Moon's Principle 1 ■ Yong'-2Cf: Separate call way tin hook 1 door P formula omit the words 3 No. 4i

Claims (1)

[Scope of Claims] In an exchange (100) having a call waiting function (121), when a subscriber (2) who is eligible to use the call waiting function (121) is on a call, another subscriber (4) )
The call waiting function (121)
starts counting after being activated and a predetermined period of time elapses before the subscriber (2) detects a predetermined operation to be performed in response to the other subscriber (4). When it is detected that the call waiting function (121) has been activated and stopped, the other subscriber (4)
A call waiting system characterized in that a timing means (200) is provided for activating another incoming call processing means (300) that executes predetermined call processing for an incoming call from.