JPH01286670A - Absence transferring system - Google Patents

Abstract

PURPOSE:To prevent the impossibility of the incoming call due to the release forgetting and to transfer even when the schedule of a registering person is postponed by calling the called extension for the incoming call of the called extension after a constant time and when the response is not performed and calling the registration extension. CONSTITUTION:The off-hook of a calling extension is detected by an extension circuit 8, and at the time of the idle condition, a telephone A is connected to a figure receiving part 6, the extension number dialled from the telephone A is received by a receiving signal 6 and analyzed by a control part 1. Next, the extension number is registered in the area of a corresponding transfer memory 2 for a constant time, the present time of a timer 3 and the registration time of a time memory 4 are compared, when it is judged that the constant time passes, a telephone B is connected to a ringing sending trunk 7. Thereafter, the timer 3 continues to call the telephone B until it times out, simultaneously, the telephone A is connected to a calling sound sending trunk 5 and the calling sound is sent to the telephone A. Here, before the time-out is decided by using the timer 3, the off-hook of the telephone B is detected by the extension circuit 8 and when the calling of the telephone B is stopped, telephones A and B are connected.

Description

[Detailed description of the invention] (b) Industrial application field The present invention relates to a call forwarding system in a private branch exchange.

(B) Conventional Technology Traditionally, in-channel exchanges have been equipped with a call forwarding function. This means that if the extension to which the calling extension is dialed (41 (called extension)) is registered in advance as the extension to which the caller is absent (registered II), then this registered extension is called, and when the registered extension answers, the This service starts a call between the calling extension and the registered extension.

To receive this service, you need to enter the special number and forwarding destination (registered extension) from the called extension, and to cancel this service, you need to enter the special number from the called extension. be. Therefore, there have been cases where the called extension cannot receive calls due to forgetting to cancel the call.

Therefore, in Japanese Patent Application Laid-Open No. 62-131654, by specifying the time to cancel the call forwarding service in advance when setting the call forwarding service, and automatically canceling the call forwarding service at the specified time, the called extension Techniques for preventing incoming calls have been proposed.

(...) Problems to be Solved by the Invention Although the above-mentioned Japanese Unexamined Patent Application Publication No. 131654/1989 can prevent call failures, the call forwarding service is automatically canceled at the specified time, so registrants cannot If (the user of the called extension)'s schedule is postponed, there is a problem that the transfer will not be possible.

(d) Means for Solving the Problems The present invention provides a call forwarding method in which a called extension calls a registered extension that has been registered in advance. calls the registered extension without calling the called extension, and after the certain period of time, calls the called extension in response to an incoming call on the called extension, and there is no response from the called extension. In this case, the call forwarding method is characterized in that the registered extension is called.

Further, in the call forwarding method of calling a registered extension registered in advance from the called extension, the present invention calls the called extension after a certain period of time specified by the called extension, and if there is a response from the called extension, In the call forwarding method, information indicating that a call forwarding service is in progress is transmitted to the called extension by a voice transmitting means, and on the other hand, if there is no response from the called extension, the call forwarding service is continued. be.

(N) Function According to the present invention, when a certain period of time has elapsed, the called extension is called in response to an incoming call, and if the called extension does not respond, the registered extension is called, so if the user forgets to cancel the call, the called extension is called. It is possible to prevent calls from not being received due to registrants, and it can also be forwarded when the registrant's schedule is postponed.

Further, according to the present invention, if the called extension is called after a certain period of time has elapsed, and there is no response from the called extension, the call forwarding service is continued, so it is possible to prevent calls from being unable to be received due to forgetting to cancel the call, and also to prevent the registrant's schedule from being interrupted. It can be transferred even if it is delayed.

(F) Embodiment FIG. 1 is a block diagram of an in-channel exchanger for explaining a first embodiment of the present invention.

In the figure, (1) is the control unit (CC) that controls each part.
, (2) is the transfer memory where the extension number of the transfer destination is stored.
(TRMEM), (3) is a timer (TIM), (4
) is a time memory (TIMMEM) in which the time read from TIM (3) is stored, and (5) is a ringing tone transmission trunk (TIMMEM) that notifies the calling extension that the extension is currently ringing.
RBT), (6) is a digit receiving unit (ORT) that receives dialed digits, (7) is a ringing transmission trunk (IR), and (8) is an extension circuit (LC) that detects on-hook and off-hook. . First, in such an exchange, for example, telephone (B) (called extension) calls the telephone (
The operation when setting the call forwarding service for incoming calls in B) will be explained.

When the off-hook of the telephone (B) is detected by the LC (8), the telephone (B) and the ORT (6) are connected, and the telephone (B) is connected to the ORT (6).
), the special number representing call forwarding registration, the forwarding destination extension number, and a certain period of time (in this embodiment, the period; for example, 2 hours) are received, and the said extension number and certain period of time are received from TRM.
It is stored in the area corresponding to the telephone (B) of EM (2). Also, the time when the settings for the call forwarding service are completed is displayed as TIM (
3) Read from T IMMEM (4) phone (B)
is stored in the area corresponding to .

Next, referring to FIG. 3, a description will be given of the missed call forwarding system according to the first embodiment of the present invention, which is set as described above.

When the off-hook of the telephone (A) (calling extension) is detected by the LC (8), a transition is made from step (SO) which is in the idle state to step (Sl) which is in the state of receiving digits, and the telephone (A) is switched off-hook.
) to ORT (6). This step (Sl)
, the extension number dialed from telephone (A) is
It is received by RT (6) and analyzed by CC (1). At this time, if the transfer destination telephone (C) (registered extension) and a certain period of time are registered in the area of TRMEM (2) corresponding to the received extension number, the process moves to step (S2).

In step (S2), the contents of TIM (3) (current time) and T IMMEM (4) corresponding to the extension number are
If it is determined that a certain period of time (2 hours) has passed since the registration of call forwarding, step (S
3). In step (S3), the telephone (
Connect B) and IR (7), call the phone (B) for a predetermined period of time (for example, 15 seconds) until TIM (3) judges timeout, and call the phone (A) and RBT (5).
and send a ring tone to telephone (A).

Then, in step (S3), T I M (3)
If the off-hook of telephone (B) is detected by L C (8) before determining the timeout using
, and the process moves to step (S4). In step (S4), telephone (A) and telephone (B) are connected.

Further, in step (Sl), if the fixed time is not registered, in step (S2), TIM (3
) and the contents of TIMMEM (4), and if it is determined that a certain period of time has elapsed since registration of call forwarding, or if a timeout is determined using TIM (3) in step (S3), step (S5). In step (S5), telephone (C) and IR (7)
is connected to call the telephone (C), and at the same time, the telephone (A) and RB T (5) are connected and a ring tone is sent to the telephone (A).

FIG. 2 is a block diagram of an in-channel exchanger for explaining a second embodiment of the present invention, and the same parts as in FIG. 1 are given the same reference numerals and their explanation will be omitted.

This second embodiment is provided with a voice response trunk (VRTi voice transmitting means) (9) for transmitting information (synthesized voice in this embodiment) indicating that a call forwarding service is in progress.

In such an exchange, for example, telephone B (called extension)
The operation when setting the call forwarding service for incoming calls to the telephone (B) is the same as in the first embodiment.

Next, a second embodiment of the present invention will be described with reference to FIG.

In step (510), the TIM corresponding to the contents of TIM (3) (current time) and the extension number of telephone (B) is
Compare the contents (registration time) of MEM (4) and register for a certain period of time (
If it is determined that 2 hours have passed, the step (Sll
). In step (Sll) the phone (B
) and I
sec) Call the telephone (B). And step (Sll)
In step (8), when off-hook of telephone (B) is detected by LC (8) before determining timeout using TIM (3), the ringing of telephone (B) is stopped and step (
512). Step (S12) The second telephone (B) and V RT (9) are connected, and the telephone (B) transmits a voice indicating that the call forwarding service is in use, and the process moves to step (S13). In step (513), when the telephone (B) HORT (6) is connected and the special number for canceling the call forwarding service is received from the telephone (B) by the ORT (6), the call forwarding service is canceled.

On the other hand, in step (Sll), when a timeout is determined using TIM (3), the call forwarding service is continued, and, for example, an incoming call from telephone (A) to telephone (B) is transferred to telephone (C). In this case, after a timeout is determined in step (Sll), the process in step (Sll) may be performed again after a certain period of time (for example, 5 minutes). The number of times this fixed operation is repeated is arbitrary. Further, this number of times may be inputted when setting the call forwarding service.

Note that in each of the above embodiments, the contents of TIM(3) and T
The content of IMMEM(4) is compared and it is determined whether the difference between the current time and the registered time has reached a certain time stored in TRMEM(2), but for example,
Store the specified time in TRMEM (2), compare this specified time with the contents of TIM (3) (1!l present time),
A configuration may be adopted in which it is determined whether a certain period of time has been reached.

In this case, the TIMMEM (4) is unnecessary. In addition, in the above embodiment, - constant time T IMMEM (
4), or a separate storage device for storing a certain period of time may be provided. Furthermore, a certain period of time may be predetermined so that there is no need to input it when setting the call forwarding service.

(g) Effects of the Invention As is clear from the above description, the present invention can prevent calls from being unable to be received by the called extension due to forgetting to release the call, and can also transfer calls even when the registrant's schedule is postponed.

[Brief explanation of the drawing]

1 and 2 are block diagrams of an in-channel exchanger for explaining the present invention in detail, and FIGS. 3 and 4 are state transition diagrams for explaining the present invention in detail. (1)...Control unit (CC), (2)...Transfer memory (TRMEM), (3)...Timer (TIM)
, (4)...Time memory (TIMMEM) , (
5)...Ring tone transmission trunk (RBT), (6)...
・Number receiving unit (ORT), (7)...Ringing transmission trunk (IR), (8)...Extension circuit (LC),
(9)...Voice response trunk (VRT; voice transmission means).

Claims (2)

[Claims] (1) In a call forwarding method in which a called extension calls a registered extension that has been registered in advance, the called extension is called in response to an incoming call on the called extension within a certain period of time specified by the called extension. the registered extension, and after the certain period of time, the called extension is called in response to an incoming call from the called extension, and if there is no response from the called extension, the registered extension is called. Call forwarding method. (2) In a call forwarding method in which the called extension calls a registered extension that has been registered in advance, the called extension is called after a certain period of time specified by the called extension, and if there is a response from the called extension, the called extension is called. A call forwarding system characterized in that information indicating that a call forwarding service is in progress is sent to the called extension by a voice sending means, and if there is no response from the called extension, the call forwarding service is continued.