JPS6354857A - Automatic incoming busy-transferring device for private branch exchange - Google Patents

Abstract

PURPOSE:To make a call through a busy terminal equipment possible in response to another incoming until a prescribed time expires by transferring the incoming for the terminal equipment to the previously determined terminal equipment after a previously set time expires since the point of the time that a warning sound is transmitted to the busy incoming terminal equipments. CONSTITUTION:On the occasion of the incoming to the busy terminal equipment 9, the warning sound is transmitted to this busy incoming terminal 9 and instantaneously the prescribed time from the transmission of the warning sound is counted, then after the counting of the prescribed time is finished, the incoming is transferred to another terminal equipment 10, and if the busy terminal equipment 9 clears out or answers to the incoming before the expiration of the previously set time, the incoming is made to be received by said terminal equipment 9. Thus, the call through the busy incoming terminal equipment 9 is possible in response to another incoming.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an automatic busy call transfer device in a private branch exchange.

(Prior art) As is well known, a private branch exchange (PBX) has automatic call forwarding (Call Forward Busy).
Some devices have a function that allows incoming calls from a busy terminal to be transferred to another preset terminal.

A conventional example of this type of automatic busy call transfer will be explained according to the flowchart in Figure 3. First, the operator temporarily puts the incoming station line or incoming extension on hold, and dials the extension number on the destination terminal ( Step 301
). When this dialing operation is completed, the central control circuit within the private branch exchange determines whether the extension connected to the terminal is free or in use (step 302). If the extension is free, that is, if the terminal is not busy, a ringing signal (bell signal) is sent to the extension (step 303), and a ringing tone (ring bank tone) is emitted to the operator. let If the extension is in use, that is, if the terminal is busy, the central control circuit determines whether a busy transfer destination has been set (step 304). Here, if the transfer destination during busy time is not set, the central control circuit causes the operator side to generate a busy tone (visitone) (step 305). In addition, if a transfer destination during a busy call is set, the number of another terminal as a transfer destination corresponding to the number of the terminal n stored in advance in the memory as shown in FIG. 4 is read out (step 306). Then, the central control circuit executes the process of step 302 above for the other terminal 1 indicated by the read number, and if the other terminal is not busy, executes the process of step 303 above, and automatically receives the busy call. Finish the transfer. To store the number of another terminal as the forwarding destination in the memory, either dial the special number preset on the terminal n side and the number of the other terminal as the forwarding destination, or dial the special number. Instead, all you have to do is press a special key and dial the destination number.

However, in the above-mentioned conventional call transfer, when a terminal is busy, incoming calls from other terminals are immediately transferred to the other terminal, so the terminal that is currently busy responds to other incoming calls. I couldn't make a call.

(Problems to be Solved by the Invention) As described above, in the conventional automatic busy call forwarding, in order to immediately transfer an incoming call to the busy terminal from another party to the other terminal, the busy terminal There was a problem in that the user could not make a call in response to another incoming call.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a busy-vJ call transfer device for each private branch exchange, which allows a busy terminal to make a call in response to another W(H).

[Defense structure 1 (Means for solving the problem) The present invention provides an exchange having a transfer means for transferring an incoming call to a busy terminal to another preset terminal,
a warning means for transmitting a warning sound to a busy incoming call terminal; a timing means for timing a preset time after sending the warning sound; and a timer for timing a preset time after the timer has finished measuring the preset time. The present invention is characterized by comprising a control means that performs the transfer by the transfer means and causes the terminal to receive the call if the busy terminal terminates the call or responds to the call before the end of timing of the preset time. .

<Function> According to the present invention, when a call is received to a busy terminal,
A warning sound is sent to the incoming call terminal that is busy, and a preset time is counted from the time the warning sound is sent, and after the preset time is finished, a preset If the busy terminal ends the call or responds to the incoming call before the end of the preset time, the call is transferred to the terminal.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing an embodiment of a busy automatic call transfer device in a private branch exchange according to the present invention.

In the private branch exchange ring 1 of this embodiment, a warning signal generator 2, a timer 3, and a memory 4 are attached to a central control circuit 5, and the central control circuit 5, communication path circuit 6, and line circuit 7 are connected to each other via a data highway 8. Connect terminal n9 and terminal 110 (e.g. multi-function telephone) to extension 811 and extension 1.
The line circuit 7 is connected to the line circuit 7 via the line 2. When there is an incoming call from the central office line or extension line, the system operates according to the flowchart shown in FIG.

First, the operator temporarily puts the incoming station line or incoming extension on hold, and makes a call to the destination terminal 9, for example, using the operator's terminal (not shown) (step 2).
01). When a call is made, the central control circuit 5 sends the terminal 19
It is determined whether the extension 11 is free or in use (step 202). Then, if the extension 11 is vacant, that is, if the terminal 9 is not busy, a ringing signal is sent to the extension 11 (step 203), and the terminals on the operator side are made to emit a ringing tone.

Also, if extension 11 is used, that is, terminal group 9
When the terminal is busy, the central control circuit 5 selects another terminal as a transfer destination during the busy period corresponding to the number of the busy terminal as shown in FIG. 4, which is stored in the memory 4 in advance. It is determined whether a number has been set (step 204). Here, if the transfer destination for the busy time is not set, the central control circuit 5 causes the terminal on the operator side to generate a busy tone (step 205). In addition, if a busy transfer destination is set, the terminal on the operator side will generate a ring tone, and the warning signal generator 2 will be activated to transmit the warning signal to the busy terminal. At the same time as adding it to group 9, timer 3 is activated to measure a preset time (step 2.6). Terminal 9 which is a multi-function telephone
When inputting a warning signal, it emits a warning sound to indicate that there is an incoming call from another party, and also flashes a light emitting element (for example, an LED) to indicate automatic call transfer during a busy call. You can detect incoming calls from others.

Next, while the timer 3 is measuring a preset time (step 207), the central control circuit 5 determines whether the busy terminal group 9 has responded to an incoming call from another party. (step 208). Here, busy terminal group 9
This response can be made, for example, by going on-hook after ending the call and then going off-hook, or by operating a call waiting shield function. Then, when the terminal 9 responds, the central control circuit 5 connects the terminal 9 to the terminating station line or the terminating extension. As a result, terminal 9
becomes a talking state for other incoming calls (step 209)
. In addition, if the timer 3 finishes measuring the preset time before the busy terminal group 9 does not respond, the central control circuit 5 sends a call to the terminal group 9 corresponding to the number of the busy terminal shown in FIG. The number of another terminal group as a temporary transfer destination (for example, the number of terminal group 10) is read from the memory 4 (step 21
0). When the central control circuit 5 reads out the number of the terminal 10, the terminal! 110 is processed in step 202, and l! of terminal 1110 is executed. If the terminal 12 is free, the process of step 203 is performed, and the automatic busy call transfer in which the incoming call from another party to the busy terminal filter 9 is transferred to the terminal group 10 is completed.

In this way, according to this embodiment, after the preset time has finished counting, incoming calls to the busy terminal group are transferred to other terminals, and the preset time has finished counting. Before doing so, you can answer the incoming call from Sen on the busy terminal.

Note that in the above embodiment, automatic call forwarding is performed between two terminal attendants, but if a private branch exchange gate is equipped with a large number of terminal groups, if the terminal group to which the transfer is being made is busy, that terminal Automatic call forwarding can be performed from one terminal group to another terminal group. Furthermore, although multifunctional telephones are illustrated as an example of the terminal group, any terminal n may be used as long as it has a function that can warn of incoming calls from others even when the terminal is busy.

[Effects of the Invention] As explained above, according to the present invention, incoming calls to a group of terminals that are busy are set in advance after a preset time has elapsed from the time when a warning sound is sent to a group of terminals that are currently busy. Since the incoming call is configured to be transferred to another terminal, it is possible to make a call in response to another incoming call at the busy terminal group until the above-mentioned time period has elapsed.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the automatic busy call transfer device for each private branch exchange of the present invention, and FIG. 2 is a flowchart used to explain the operation of the embodiment shown in FIG. Fig. 3 is a flowchart used to explain conventional automatic call forwarding, and Fig. 4 is a table showing the numbers of other terminals as forwarding destinations corresponding to the number of the busy terminal. . 1... Separate branch exchange, 2... Warning signal generator, 3...
・Timer, 4...Memory, 5...Central control circuit, 6
... Call path circuit, 7... Line circuit, 8... Data highway, 9.10... Terminal 1.11.12...
·extension. LLIt' - Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Scope of Claims] In a private branch exchange having a transfer means for transferring an incoming call to a busy terminal to another preset terminal, a warning means for transmitting a warning tone to the busy receiving terminal; , a timer for timing a preset time after sending out the warning sound; and after the timer finishes timing the preset time, the transmission is performed by the transfer means, and the preset time is clocked. An automatic busy call transfer device in a private branch exchange, characterized in that the device comprises a control means for causing the terminal to receive a call when the busy terminal ends the call or answers the call before the call is terminated.