JPH04322544A - Transfer system for incoming call - Google Patents

Abstract

PURPOSE:To attain the reply in a 1st extension by calling both 1st and 2nd extensions after a prescribed time after the changeover to the transfer mode when a call loss reaches a prescribed level. CONSTITUTION:A talking request is made from an extension A to an extension B1 the call loss number is registered in a memory MM, and when the call loss number reaches a prescribed number, the mode transits to the 1st transfer mode. A control circuit CC calls both extensions B1, B2 for a prescribed time in the case of a call loss of a prescribed number and when the extension B1 replies, a switch circuit SW is controlled to connect the extension B1 to attain the talking between the extensions A and B1. When the extension B2 replies till the call loss to the extension B1 reaches the prescribed number, the circuit CC controls the switch circuit SW to connect the incoming call to the extension B2. Thus, the incoming call is replied even when the transfer mode is not subject to release processing.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for transferring incoming calls in a private branch exchange system installed within the premises of an office or the like and connecting telephones within the office.

0002

2. Description of the Related Art Conventional incoming call forwarding methods automatically switch to forwarding mode when the number of unanswered calls to that extension exceeds a predetermined number, in case the subscriber is not present at the location where the extension is installed. Instead, all subsequent incoming calls were automatically forwarded to a specific, predetermined extension. For example, see JP-A-60-121867.

0003

[Problem to be Solved by the Invention] However, if all incoming calls are automatically transferred to a specific extension as described above, it is difficult to join that extension after the number of unanswered calls exceeds a predetermined number. If the subscriber returns to his/her desk, the subscriber of that extension must go to the location of the particular extension to answer his/her incoming call, or otherwise cancel the call in some way. There was a problem in that it was not possible to respond.

The present invention has been made in view of the above-mentioned problems, and it is possible to respond to incoming calls on a private branch exchange device that is capable of responding to incoming calls on the extension even after switching to transfer mode. This is an attempt to provide a transfer method.

[0005]

[Means for Solving the Problems] The present invention provides an incoming call transfer method for a private branch exchange having an extension transfer function, in which the number of unanswered calls (number of lost calls) of incoming calls to a first extension is When the scheduled number of calls is exceeded, the system shifts to the first transfer mode for incoming calls after that point, and in the first transfer mode, after ringing the first extension for a certain period of time, the call is transferred to the first extension. This system is characterized by having a function of calling both the first extension and a scheduled second extension when the extension does not answer, and connecting the incoming call to the extension that answered first.

[0006] Furthermore, in addition to this feature, the present invention also provides the above-mentioned first feature.
In the transfer mode, when the number of unanswered calls on both the first extension and the second extension exceeds the scheduled number, the system shifts to the second transfer mode for incoming calls from then on, and In transfer mode, when the first extension does not respond after calling the first extension for a certain period of time, the first extension and the second extension are simultaneously called, and both extensions do not respond for a certain period of time. The system is characterized in that it further has a function of calling both of these extensions and a scheduled third extension, and connecting the incoming call to the extension that answered first.

[0007]

Operation: If an incoming call is received at the first extension but the subscriber does not answer, and the calling party gives up on making the call, the incoming call will be a lost call. In the present invention, when the call loss reaches a predetermined number (for example, 5 times) in a row and the switch is switched to the first transfer mode, the first transfer mode is first used for subsequent calls.
the extension for a certain period of time (for example, 5 rings). If there is no response even after calling for a certain period of time, a predetermined second extension is called together with the first extension, and the incoming call is connected to the extension that answered first.

[0008] In the first transfer mode, when the number of calls in which both the first extension and the second extension are unanswered reaches a predetermined number (for example, 5 times), the system switches to the second transfer mode. , for the next incoming call, after ringing the first extension for a certain period of time (for example, 5 rings), the second extension is called.
After ringing the first extension and the second extension for a certain period of time (for example, five rings), a predetermined third extension is called together with the first extension. The second extension is simultaneously called and the incoming call is connected to the extension that answered first.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The incoming call transfer method of the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram of a private branch exchange equipped with this transfer method, and FIG. 2 is a flow diagram explaining the operation of the transfer method. FIG. 3 is a flow diagram of the first transfer mode, and FIG. 4 is a flow diagram of the second transfer mode.

[0010] The private branch exchange device has multiple extensions A, B1, and B.
2, B3 and extension circuits CA, C connected to each extension.
1, C2, and C3, a switch circuit SW that receives the output of each extension circuit and connects the two extensions to be connected (connects one of the communication paths R1, R2, and R3), and a switch circuit SW that receives the output of each extension circuit and connects the two extensions to be connected. a control circuit C that receives the signal and controls the switch circuit SW;
C, a memory MM for storing data such as forwarding destination extensions and call losses, and various trunks such as ringing trunks I.
R, dial tone transmission trunk PD, ring tone trunk RB, hold tone transmission trunk HD, etc. For convenience of explanation below, the extension of the calling party is extension A.
The first extension, the second extension, and the third extension are each extension B.
1, B2, and B3. Note that although only the above-mentioned extensions are representatively shown in the figure, in reality, an arbitrary number of extensions are provided in addition to these.

For example, the control circuit CC understands a call from extension A to extension B1 from the state of extension circuit CA, identifies the state of extension B1 by observing extension circuit C1, and
If it is not busy, the switch circuit SW is controlled to connect the communication path R1. On the other hand, if extension B1 is busy,
Notify extension A of this fact. In order to perform this operation smoothly, the control circuit CC uses the ringing trunk RB and ringing trunk IR to connect extension A and extension B1 to
I'm trying to notify you of ringing or ringing.

Furthermore, the control circuit CC has an extension transfer function for transferring an incoming call to a specific extension (for example, a function for transferring an incoming call to extension B1 to extension B2), and also has an extension transfer function that transfers an incoming call to a specific extension (for example, a function to transfer an incoming call for extension B1 to extension B2). When B1 does not respond, that is, when there is a call loss, this call loss information is stored in the memory MM.
It has the function to register. Further, this control circuit CC is configured to be able to monitor call loss information in the memory MM. Furthermore, during the above extension transfer operation, the control circuit CC
uses a hold tone sending trunk HD and a dial tone sending trunk PD to provide hold music to extension A and dial tone to extension B1.

The memory MM has an area for storing the number of missed calls of an incoming call extension, and an area for storing the number of missed calls for an incoming call extension and a second extension scheduled for that extension. The data is configured to be readable so that it can be monitored in response to a request from the control circuit CC, and is configured to be reset by an instruction from the control circuit CC. Furthermore, the memory MM stores the transfer destination extension (for example, the second extension B2 or the third extension B3) for the first extension B1.
It has the function of relating.

[0014] Next, when calls to the first extension B1 are missed five times in a row, the first transfer mode is entered, and in the first transfer mode, calls to the first extension B1 are missed consecutively. The operation of the incoming call transfer method of the present invention will be explained with reference to the flowcharts of FIGS. 2, 3, and 4, with the setting that the second transfer mode is entered after five more times.

First, a call request is made from extension A to the first extension B1 (step S1). Specifically, the operator of extension A dials the extension number of first extension B1. The first extension B1 outputs a ring when it is not busy and calls the subscriber of the first extension B1. If there is a response,
A call between extension A and first extension B1 becomes possible (step S2). On the other hand, if there is no response, one lost call is added and the number of lost calls after the addition is registered in the memory MM (step S3). When the number of lost calls registered in the memory MM is a predetermined number (
In the embodiment, if 5) has not been reached, a new incoming call is waited for. When there is no response to the incoming call to the first extension B1 five times in a row, the process shifts to the first transfer mode (step S4).

In the first transfer mode S4, the control circuit CC:
When there is a fifth missed call to the first extension B1,
For subsequent incoming calls, call the first extension B1 for a certain period of time (
For example, the process is performed so that the first extension B1 responds within a certain period of time (step S41), and the presence or absence of a response from the first extension B1 within that certain period of time is checked (step S42).
). When the first extension B1 answers, a call between the extension A and the first extension B1 becomes possible (step S51). Also, the number of lost calls in the memory MM is reset to the initial value. On the other hand, when there is no response to the first extension B1 because the operator of the first extension B1 is not present at the installation location of the first extension B1, the control circuit CC controls the first extension B1 and the second extension B1.
(Step S43).

[0017] In response to this call, a response from the first extension B1 is checked (step S44). 1st extension B
If there is a response of 1, the control circuit CC controls the switch circuit SW to connect the incoming call to the first extension B1, and communication between the extension A and the first extension B1 becomes possible (step S51). Also, the number of lost calls in the memory MM is reset to the initial value. On the other hand, if there is no response from the first extension B1, the response from the second extension B2 is checked (step S45). By the time calls to the first extension B1 are missed four times in a row, the second
If there is a response from extension B2, the control circuit CC controls the switch circuit SW to connect the incoming call to the second extension B2, and communication between extension A and second extension B2 becomes possible (step S
52). At this time, the first transfer mode is maintained. When there is also no response from the second extension B2, the control circuit CC
executes a call loss registration process in the memory MM (step S6). Then, the first extension B1 and the second extension B2
When call loss occurs a predetermined number of times (for example, five times) in succession due to both not responding for a certain period of time, the control circuit CC shifts to the second transfer mode (step S7).

In the second transfer mode S7, the control circuit CC:
In the first transfer mode S4, when a call loss occurs in which there is no response from both the first extension B1 and the second extension B2, and the fifth call loss occurs, for subsequent incoming calls, Processing is performed to ring the first extension B1 for a certain period of time (for example, the time for the ring tone to sound five times) (step S7
1) Check whether there is a response from the first extension B1 within the certain period of time (step S72). When the first extension B1 answers, a call between the extension A and the first extension B1 becomes possible (step S81). Also, the number of lost calls in the memory MM is reset to the initial value. On the other hand, the operator of the first extension B1 is not present at the installation location of the first extension B1, and this
When there is no response to extension B1 of control circuit C
C for both the first extension B1 and the second extension B2,
Processing is performed to ring for a certain period of time (for example, the time it takes to ring the ringtone five times) (step S73).

In response to this call, a response from the first extension B1 is checked (step S74). 1st extension B
If there is a response of 1, a call between extension A and first extension B1 becomes possible (step S81). Also, the number of lost calls in the memory MM is reset to the initial value. On the other hand, if there is no response from the first extension B1, the response from the second extension B2 is checked (step S75). If there is a response from the second extension B2, it becomes possible to talk between the extension A and the second extension B2 (step S82). When there is also no response from the second extension B2, the control circuit CC controls the response between the first extension B1 and the second extension B2.
and the third extension B3 for a certain period of time (for example, the same time as the above-mentioned certain period) (step S76).

[0020] In response to this call, a response from the first extension B1 is checked (step S77). 1st extension B
If there is a response of 1, a call between extension A and first extension B1 becomes possible (step S81). Also, the number of lost calls in the memory MM is reset to the initial value. On the other hand, if there is no response from the first extension B1, the response from the second extension B2 is checked (step S78). If there is a response from the second extension B2, it becomes possible to talk between the extension A and the second extension B2 (step S82). Further, the registration by the call loss registration process in the memory MM in step S6 is reset to the initial value. When both the first extension B1 and the second extension B2 do not respond,
It is checked whether the third extension B3 responds (step S79). If there is a response from the third extension B3, it becomes possible to talk between the extension A and the third extension B3 (step S83).

[0021] When none of the three extensions B1, B2, and B3 respond, the control circuit CC performs call loss processing (step S84).
Execute. For example, call loss processing here may include notifying extension A of the voice from the voice source (not shown), or continuing to ring extension A without any message. to notify you.

[0022]

[Effects of the Invention] The present invention provides an extension transfer function that transfers an incoming call to a second extension scheduled to correspond to the first extension when a predetermined number or more of call losses occur to the first extension. In a private branch exchange system with a private branch exchange system, even for incoming calls after the transfer mode is set, the answerer on the first extension can answer on the first extension for a certain period of time; The answerer can answer the incoming call at either the location where the first extension or the second extension is installed. This feature allows you to answer an incoming call even if the called party returns from the second extension to the first extension after setting the transfer mode, or takes any other action such as canceling the transfer mode. It is convenient.

[Brief explanation of drawings]

FIG. 1 is a configuration block diagram of a private branch exchange device equipped with an incoming call transfer method according to the present invention.

FIG. 2 is a flow diagram illustrating the operation of the incoming call transfer method of the present invention.

FIG. 3 is a flow diagram of a first transfer mode.

FIG. 4 is a flow diagram of a second transfer mode.

[Explanation of symbols]

A Calling party's extension B1 1st extension B2 Second extension B3 3rd extension CA extension circuit SW Switch circuit CC control circuit MM memory IR ringing trunk PD dial tone transmission trunk RB ring trunk HD hold music transmission trunk

Claims (2)

[Claims] Claim 1: In an incoming call transfer method for a private branch exchange device having an extension transfer function, when the number of unanswered calls (number of lost calls) of incoming calls to the first extension exceeds the scheduled number, Shifts to the first transfer mode for an incoming call and transfers the first transfer mode to the first transfer mode.
In the transfer mode, when the first extension does not respond after calling the first extension for a certain period of time, the first extension and the scheduled second extension are called together, and the first extension that answers is called first. An incoming call transfer method characterized by having a function of connecting the incoming call to an extension. Claim 2: In an incoming call transfer method for a private branch exchange having an extension transfer function, when the number of unanswered calls (number of lost calls) of incoming calls to the first extension exceeds the scheduled number, Shifts to the first transfer mode for an incoming call and transfers the first transfer mode to the first transfer mode.
In the transfer mode, when the first extension does not respond after calling the first extension for a certain period of time, the first extension and the scheduled second extension are called together, and the first extension that answers is called first. It is characterized by having a function of connecting the incoming call to an extension, and in the first transfer mode, the first extension and the second
When the number of unanswered calls on both extensions exceeds the scheduled number, the second transfer mode is entered for subsequent incoming calls, and the second transfer mode is activated after calling the first extension for a certain period of time. , when the first extension does not respond, the first extension and the second extension are simultaneously called, and when both extensions do not respond for a certain period of time, both of these extensions and the scheduled third extension are called. An incoming call transfer method characterized by having a function of calling the extension number and connecting the incoming call to the extension that answered first.