JPH01208956A - Transfer system for telephone set - Google Patents

Abstract

PURPOSE:To allow a transfer party to recognize the operating state of an extension telephone set of a transfer destination by applying the control depending on the operating state of the extension telephone set of a transfer destination when the extension telephone set of a transfer destination is busy and outputting the information corresponding to the operating state of the extension telephone set of a transfer destination. CONSTITUTION:In the case of a call transferred from an extension telephone set 11 to an extension telephone set 12, if the extension telephone set 12 is busy, a control section 2 of a key telephone set master set 1 controls a selector switch 10 depending on the operating state of the extension telephone set 12 and selects a busy tone signal corresponding to the state from busy tone generating sections 7-9. Then the selector switch 10 outputs the busy tone signal to the extension trunk 5 connecting to the extension telephone set 11 via a channel switch 3. Thus, the user of the extension telephone set 11 can recognize whether the extension telephone set 12 is in talking with an extension or with a line wire or busy in other applications.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a telephone transfer method, and relates to a telephone transfer method for transferring a call from a special Q/overseas line to another extension telephone.

(Prior Art) A telephone, for example, a button telephone, has an extension telephone housed in the main device of the key telephone.An outside line is connected to the main device of the button telephone, and calls from this external line are The user of the extension telephone answers the call.By the way, the user of the extension telephone who answers the call from an outside line may transfer the call to a certain extension telephone.In such a case, the transfer When the extension phone is in use, only one type of busy tone is returned.

[Problem that the invention attempts to solve]

In this way, when an attempt is made to transfer a call from an outside line to a certain extension telephone, if that extension telephone is in use, a busy tone is returned. However, since there is only one type of busy prefix, it is not possible to determine whether the other party's extension phone is in use for an outside line call, an internal call, or for some other purpose. There is. For this reason, if Shicho is busy with an extension call, it is impossible for him to call the extension early due to the idea that the line should be given priority.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate such drawbacks and to provide a telephone transfer method that allows the transferee to know the usage status of the transfer destination's extension telephone when transferring a call from an outside line.

[Means to solve the problem]

In a telephone transfer method in which an extension telephone in response to an incoming call transfers the call to another extension telephone, the present invention provides a control that performs control based on the usage state of the transfer destination extension telephone when the transfer destination extension telephone is in use. means for outputting information corresponding to the usage state of the transfer destination extension telephone under the control of the control means; information outputting means for outputting information corresponding to the usage state of the transfer destination extension telephone according to the information from the information output means It is characterized by having a status notification means for notifying the user.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

This telephone transfer system consists of a key telephone main device 1 to which an outside line 101 is connected, and an extension telephone If, 12 connected to the key telephone main device 1. Further, the button telephone main device 1 includes a control section 2, a communication path switch 3, busy tone generation sections 7 to 9, and a selection switch 10.
, an outside line trunk 4, and an extension trunk 5.6.

In the telephone transfer system with such a configuration, the busy tone generators 7, 8.9 of the key telephone main device 1 are used to control the usage status of the extension telephone, for example, during an external call, during an internal call, or for other purposes. Busy tone signals relating to different busy tones are generated, each corresponding to a usage state such as busy.

In the case of transfer of a call from an outside line, when the extension telephone of the transfer destination is in use, the control section 2 controls the selection switch 101, the communication path switch 3, etc. according to the usage state of the extension telephone.

The selection switch 10 selects the busy tone signal from the busy tone generating sections 7 to 9 and outputs it to the communication path switch 3 under the control of the control section 2 .

When the transfer destination extension telephone is busy, the control unit 2 controls the call path switch 3 to output the busy tone signal from the selection switch IO to the extension trunk to which the transfer source extension telephone is connected. .

Extension trunks 5, 6 connect extension telephones 11.12 and call path switch 3. Further, the outside line trunk 4 connects the outside line 101 and the call path switch 3.

When the transfer destination extension phone is busy, the extension telephones 11 and 12 transmit a busy tone using a busy tone signal from the extension trunk to notify the usage status of the transfer destination extension phone.

Next, the operation of this embodiment will be explained. External line 101
Assume that there is an incoming call, and at this time, for example, the extension telephone 11 answers. After this, when transferring from the extension telephone 11 to the extension telephone 12, the control unit 2 of the key telephone main device 1 controls the extension telephone 12 while the extension telephone 12 is in use.
The selection switch 10 is controlled according to the state of use. Under the control of the control section 2, the selection switch 10 transmits a busy tone signal corresponding to the state of use of the extension telephone, for example, when the extension telephone 12 is in an extension call, to the busy tone generating sections 7 to 10. Select from 9. Then, the selection switch 10 is
This busy tone signal is output to the communication path switch 3. Under the control of the control section 2, the call path switch 3 outputs this busy tone signal to the extension trunk 5 to which the transfer source extension telephone 11 is connected. The extension telephone 11 is connected to the extension trunk 5
A busy tone signal indicating that an extension call is in progress is sent out. This allows the user of the extension telephone 11 to know that the extension telephone 12 is in use for an extension call.

Similarly, if the extension telephone [12 is in use for an outside line call, a busy tone corresponding to this usage status is sent out from the extension telephone 11, and if it is being used for other purposes, a busy tone corresponding to this is sent out. is sent. Therefore, the user of the extension telephone 11 can know from these busy tones whether the extension telephone 12 is in use for an internal call, an external call, or for some other purpose. can.

FIG. 2 is a prosock diagram showing another embodiment of the present invention. This telephone transfer method is based on the key telephone main device 21 to which the outside line 101 is connected, and the key telephone main device 21 connected to the outside line 101.
It is connected to an extension telephone 13.14 and equipped with displays 13A and 14A. Furthermore, the key telephone main device 21 is composed of a control section 22, a display data memory 27, a call path switch 23, an outside line trunk 24, and extension trunks 25 and 26.

In the telephone transfer method with such a configuration, the display data memory 27 of the key telephone main unit 21 displays the usage status of the extension telephone, such as the usage status of the extension telephone, such as the usage status of the extension telephone, such as during an outside line call, during an internal call, or when being used for other purposes. , stores display data to be displayed on a display included in the extension telephone.

In the case of transfer of a call from an outside line, when the extension telephone of the transfer destination is in use, the control unit 22 reads display data corresponding to the usage status of this extension telephone and switches the call path switch 23
Output to.

The call path switch 23 outputs the display data from the control section 22 to the extension trunk to which the transfer source extension telephone is connected under the control of the control section 22 when the transfer destination extension telephone is busy.

Extension trunks 25.26 connect extension telephones 13.14 and call path switch 23. Also, outside line trunk 2
4 connects the outside line 101 and the communication path switch 23.

Next, the operation of this embodiment will be explained. External line 101
Assume that there is an incoming call, and at this time, for example, the extension telephone 13 answers. Thereafter, when transferring data from the extension telephone 13 to the extension telephone 14, when the extension telephone 14 is in use, the control unit 22 of the key telephone main device 21 displays display data corresponding to the usage state of the extension telephone 14. Read from data memory 27. Then, the control unit 22 outputs this display data to the communication path switch 23. Under the control of the control section 2, the call path switch 23 outputs this display data to the extension trunk 25 to which the transfer source extension telephone 13 is connected. Based on this display data, the extension telephone 13 displays the usage status of the extension telephone 14 on the display 13A.

In this way, the user of the extension telephone 13 can
From the display 3A, it can be known whether the extension telephone 14 is in use for an internal call, an outside call, or for some other purpose.

FIG. 3 is a block diagram of an embodiment that simultaneously implements the two embodiments described above. That is, when an attempt is made to transfer a call to another extension telephone 16 after an incoming call is received from the outside line 101 and the extension telephone 15 answers, and the extension 16 is in use for some reason, the plurality of busy tone generation circuits 37 to 39
A preset busy tone signal is selected by the selection switch 40 depending on the state of use. This busy tone signal is sent to the extension telephone 15, and the transferee can know the usage status of the extension telephone 16 from the type of busy tone.

Further, since the extension telephone 15 is a telephone equipped with a display 15A, the use status of the extension telephone 16 can be known from the display set in the display data memory 41.

In this way, when attempting to transfer a call from an outside line, if the transfer destination extension telephone is in use, the usage status is
The busy tone signal generated by the busy tone generator can be selected by the busy tone selection switch and transmitted, or the contents of the display data memory can be displayed on the display of the telephone equipped with a display device. be able to. Additionally, if the extension phone to which the transfer is being made is in progress, the extension user will be prompted to "end the extension call as soon as possible because there is a call from an outside line."
By sending out some kind of tone or displaying an indication that means, outside lines can be transferred efficiently.

In addition, in the three embodiments described above, one outside line and two
Although one extension telephone is connected to the key telephone main device, the number of outside lines and extension telephones connected to the key telephone main device is not limited to this.

〔Effect of the invention〕

As explained above, the telephone transfer method of the present invention has the advantage that when transferring a call from an outside line, the transferee can know the usage status of the transfer destination extension. As a result, even if the transfer destination extension is in use, calls from outside lines can be prioritized depending on its usage status.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the invention, and FIGS. 2 and 3 are block diagrams showing other embodiments of the invention. 1, 21.31... key telephone main device 2, 22.3
2...Control unit 3, 23.33...Call path switch 4, 24.34...External trunk 5, 6.25.26.35.36...Extension trunk 7, 8. 9.37.38.39...Busy tone generator 10, 40...Selection switches 11-16...Extension telephones 13A-16A...Displays 27, 41...・Display data memory agent Patent attorney Yoshiyoshi Iwasa I-1

Claims (1)

[Claims] (1) In a telephone transfer method in which an extension telephone that responds to an incoming call transfers the call to another extension telephone, when the extension telephone of the transfer destination is in use, a control means that performs control according to the usage status of the extension telephone of the transfer destination. and an information output means for outputting information corresponding to the usage status of the transfer destination extension telephone under the control of the control means; and information outputting means for notifying the usage status of the transfer destination extension telephone based on information from the information output means. 1. A telephone transfer method comprising: status notification means.