JPH09270868A - Private branch exchange - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a private branch exchange to be automatically connected to a correct device, without a complicated operation by the user by allowing the private branch exchange to identify a received signal and to make a transfer, thereby discriminating whether or not a wrong number is taken. SOLUTION: Suppose that an incoming call reaches a line control section 11A with a facsimile equipment number from an opposite terminal equipment, the line control section 11A sends a control signal to a line changeover section 12 based on information stored in a storage section 14 to connect the line control section 11A and a line of a terminal control section 13B. When the terminal control section 13B detects hook-off of the facsimile equipment, the terminal control section 13B monitors a signal from an opposite terminal equipment and transfers a call to a terminal control section 13A connected to a telephone set, when no facsimile call signal is detected. When a call reaches the line control section 11B with a telephone set number from the facsimile equipment, the call is similarly transferred to the terminal control section 13B connected to the facsimile equipment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a private branch exchange,
In particular, the present invention relates to a private branch exchange with an automatic transfer function for transferring to a telephone or a facsimile device according to the identification result of an incoming signal.

[0002]

2. Description of the Related Art When a line is shared by a telephone and a facsimile machine, it automatically identifies whether an incoming call is a facsimile machine or a telephone, calls a telephone number stored in advance when the telephone is called, and automatically transfers the facsimile. A device is conventionally known (Japanese Patent Laid-Open No. 4-129381). As shown by 7 in FIG. 4, this facsimile apparatus has a facsimile call signal detection unit 71 and an extension transfer control unit 72, and a signal received by the facsimile call signal detection unit 71 via a private branch exchange (PBX) is called by facsimile. If it is not a facsimile call signal, the extension transfer control unit 72 is controlled to send a transfer function start signal to the PBX, and then the transfer destination telephone stored in advance is stored. Dial a number (call).

In this way, by calling and forwarding the telephone number of the forwarding destination stored in advance when the facsimile call signal is not detected at the time of the incoming call from the recipient via the PBX, It is possible to automatically transfer the call to the telephone having the extension number through the facsimile device 7 to make a call.

On the other hand, when an incoming call arrives from a facsimile device on a telephone which shares a line with the above-mentioned facsimile device 7, the user manually transfers the incoming call by means such as extension transfer.

[0005]

However, conventionally, a telephone which shares a line with the facsimile device 7 has a function of detecting a facsimile calling signal, calling an extension number of the facsimile device and automatically transferring it. If there is an incoming call from the fax machine to the telephone,
There is a problem that the transfer is not performed automatically and the communication by the facsimile device cannot be performed.

Further, when an incoming call is received from the facsimile device to the telephone, the user uses a method of manually transferring by using a means such as extension transfer, so that the operation of the user is complicated.

The present invention has been made in view of the above points. In an intra-area switching device, a signal received is identified and transferred to determine whether a number is wrong or not, and a user performs a complicated operation. It is an object of the present invention to provide a private branch exchange that can automatically connect to the correct device without any trouble.

[0008]

To achieve the above object, in a private branch exchange for connecting a public line to a telephone and a facsimile machine of a private network, a storage unit for storing the telephone numbers of the telephone and the facsimile machine of the private network. After the response of the line control unit connected to the public line and the telephone or the facsimile device, the signal transmitted from the partner device via the public line and the line control unit is received to detect whether or not the signal is a facsimile call signal, Based on the detection result and the telephone number from the storage unit, when the facsimile call signal is detected, it is transferred to the facsimile machine of the private network, and when the facsimile call signal is not detected, it is transferred to the telephone of the private network. A line that establishes a line connection between one line control unit and one terminal control unit based on the control signals of the line control unit and the plurality of terminal control units It is obtained by a structure and a replacement part.

In the present invention, the signal sent from the partner device is received to detect whether or not it is a facsimile call signal, and based on the detection result and the telephone number from the storage unit, the line connected to the telephone is connected. When there is an incoming call and when a facsimile call signal is detected, it is judged that the incoming call is from a facsimile machine, and it is transferred to the facsimile machine on the private network, and the line is connected to the facsimile machine on the private network. When an incoming call is received and a facsimile call signal is not detected, it is determined that the incoming call is from a telephone and the call is transferred to a telephone on the private network.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. 1 is a block diagram of an embodiment of a private branch exchange according to the present invention, FIG. 2 is a block diagram of a terminal control unit which is a main part of FIG. 1, and FIG. 3 is an example of a system to which the private branch exchange of the present invention is applied. The system configuration diagram of is shown.

In FIG. 3, a private branch exchange 1 of the present invention is connected to a telephone 2 and a facsimile machine 3 of the private branch exchange network, and is also connected to a public line network via an NTT exchange 4. When an incoming call arrives at the private branch exchange 1 from the facsimile device 5 or the telephone 6 via the NTT exchange 4, the private branch exchange 1 identifies the signal on the line immediately after the incoming call and, depending on the identification signal, the telephone 2 or the facsimile device. 3 has an automatic transfer function.

As shown in FIG. 1, this private branch exchange 1 has N
The line control units 11A and 11B connected to the NTT line with the TT switch 4 and the line switching unit 12 that performs line switching
A terminal control section 13A connected to the telephone 2, a terminal control section 13B connected to the facsimile apparatus 3, and a storage section 14 for storing the telephone numbers of the telephone 2 and the facsimile apparatus 3.

The line control units 11A and 11B are connected between the NTT line and the line switching unit 12 to control the operation of the line switching unit 12 based on the information stored in the storage unit 14.
It notifies the terminal control units 13A and 13B of the incoming call. The line switching unit 12 establishes a line connection between one of the line control units 11A and 11B and one of the terminal control units 13A and 13B based on the control signals of the line control units 11A and 11B and the terminal control units 13A and 13B.

The terminal control units 13A and 13B are connected to the telephone 2 and the facsimile apparatus 3 and the line switching unit 12 shown in FIG. 3, and notify the telephone 2 or the facsimile apparatus 3 of an incoming call, and the telephone 2 or the facsimile apparatus. After detecting the response of the device 3, monitor the signal from the other terminal on the line,
When a call is made from the facsimile device 5 shown in FIG.
When a call is made from the telephone 6 shown in (4), the transfer is performed based on the information in the storage unit 14.

FIG. 2 is a block diagram showing an example of a detailed configuration of the terminal control units 13A and 13B. As shown in FIG. 2, the terminal control units 13A and 13B include the incoming call notification unit 13
1, response detection unit 132, facsimile call signal detection unit 1
33 and the line switching control unit 134.

The incoming call notification unit 131 is a line switching control unit 13
When a signal indicating an incoming call is received from the terminal 4, the terminal control unit 1
A calling signal (ringer signal, 16 Hz calling signal) is sent to the telephone set 2 or the facsimile machine 3 to which 3A and 13B are connected. The response detection unit 132 uses the telephone 2
Alternatively, the off-hook of the facsimile device 3 is detected, and the facsimile calling signal detection unit 133 and the line switching control unit 134 are detected.
A response detection signal is sent to each of the.

Upon receiving the response detection signal from the response detection unit 132, the facsimile call signal detection unit 133 monitors the signal from the partner terminal and detects the detection result as to whether it is a facsimile call signal or not by the line switching control unit 134. Notify.

The line switching control section 134 compares the number information stored in the storage section 14 with the telephone number by comparing the number information stored in the storage section 14 on the basis of the detection signal from the facsimile calling signal detection section 133 indicating whether or not the facsimile calling signal. 2 determines whether there is an incoming call from the telephone 6 or the facsimile device 3 to the facsimile device 3, and when there is a mismatch, the line switching unit 12 and the other terminal control unit 13B or 13A A transfer request signal is sent to the terminal to transfer.

Next, the operation of the embodiment of the present invention will be described with reference to FIGS. In FIG. 2, the number of the NTT line connected to the line controller 11A is assumed to be a facsimile number. Further, it is assumed that the terminal control unit 13A is connected to the telephone 2 and the terminal control unit 13B is connected to the facsimile device 3. This connection information is stored in the storage unit 14.
Is stored in

Now, assuming that there is an incoming call from the telephone 6 to the NTT line connected to the line control unit 11A,
The line control unit 11A sends a control signal to the line switching unit 12 based on the storage information of the storage unit 14, and the line control unit 1
The line between 1A and the terminal control unit 13B is connected. At the same time, the line control unit 11A sends a control signal to the terminal control unit 13B.

The line switching control unit 134 of the terminal control unit 13B
When the control signal is received from the line control unit 11A, the control signal is sent to the incoming call notification unit 131, and the incoming call notification unit 131 calls the facsimile device 3 (ringer signal, 16 Hz calling signal). Is sent.

Next, when the response detection unit 132 detects the off-hook of the facsimile apparatus 3, the response detection unit 132 notifies the facsimile call signal detection unit 133 of the response detection result, activates it, and monitors the signal from the telephone 6. . here,
Since the incoming call is from the telephone 6, the facsimile call signal detection unit 133 does not notify the line switching control unit 134 of the detection of the facsimile call signal. Therefore, the line switching control unit 134 determines based on the stored information in the storage unit 14 that the telephone number of the facsimile device 3 has been erroneously received from the telephone, and the terminal control unit 13A so as to transfer the incoming call from the telephone to the telephone 2. Transfer to.

Next, NTT connected to the line control unit 11B
The telephone number of the line is a telephone number, and the operation when there is an incoming call from the facsimile device 5 to this number will be described. In this case, the line control unit 11B is the storage unit 1
Based on the stored information of 4, the control signal is sent to the line switching unit 12 to connect the lines of the line control unit 11B and the terminal control unit 13A. At the same time, the line control unit 11
B sends a control signal to the terminal control unit 13A.

The line switching control unit 134 of the terminal control unit 13A
When receiving the above control signal from the line control unit 11B, the control signal is sent to the incoming call notification unit 131, and the incoming call notification unit 131 sends a ringing signal (ringer signal, 16 Hz ringing signal) to the telephone set 2. Send it out.

Next, when detecting the off-hook of the telephone 2, the response detecting section 132 notifies the facsimile calling signal detecting section 133 of the response detection result, activates it, and monitors the signal from the telephone 6. Here, since the incoming call is from the facsimile apparatus 5, the facsimile call signal detection unit 133 notifies the line switching control unit 134 of the detection of the facsimile call signal. Therefore, the line switching control unit 134 determines based on the information stored in the storage unit 14 that there is an erroneous incoming call from the facsimile device to the telephone number of the telephone set 2, and the incoming call from the facsimile device is transferred to the fax viewing device 3 by the terminal. Transfer to the control unit 13B.

As described above, according to this embodiment, it is possible to realize a private branch exchange which automatically transfers a correct incoming number when the telephone number of the facsimile device and that of the telephone are mixed up.

[0027]

As described above, according to the present invention,
When an incoming call is received on the line to which the telephone is connected, and when a facsimile call signal is detected, it is determined that the incoming call is from a facsimile machine, and the call is transferred to a facsimile machine on the private network, and a facsimile on the private network is sent. When there is an incoming call on the line to which the equipment is connected, and when the facsimile ringing signal is not detected, it is judged that the incoming call is from the telephone and it is transferred to the telephone on the premises network. In addition, the data can be transferred to the correct terminal, and the communication between the telephones and the facsimile devices can be performed without taking a complicated procedure such as manual extension transfer, and the convenience can be improved as compared with the related art.

[Brief description of drawings]

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

FIG. 2 is a block diagram of an example of a terminal controller of FIG.

FIG. 3 is a system configuration diagram of an example of a system to which the present invention is applied.

FIG. 4 is a block diagram of an example of the related art.

[Explanation of symbols]

 1 Private Branch Exchange 2 Telephone 3 Facsimile Device 4 NTT Exchange 5 Facsimile Device 6 Telephone 11A, 11B Line Control Unit 12 Line Switching Unit 13A, 13B Terminal Control Unit 14 Storage Unit 131 Incoming Call Notification Unit 132 Response Detection Unit 133 Facsimile Call Signal Detection Unit 134 Line switching control unit

Claims (2)

[Claims] 1. A private branch exchange for connecting a public line to a telephone and a facsimile device of a private network, a storage unit for storing the telephone numbers of the telephone and the facsimile device of the private network, and a line control unit connected to the public line. After the response of the telephone or the facsimile device, a signal sent from the partner device via the public line and the line control unit is received to detect whether it is a facsimile call signal, and the detection result and the storage unit A plurality of terminal controls for transferring to the facsimile machine of the private network when the facsimile call signal is detected and to the telephone of the private network when the facsimile call signal is not detected, And a line connection between one of the line control units and one of the terminal control units based on control signals of the line control unit and the plurality of terminal control units. Private branch exchange, characterized in that it comprises a line switching unit for performing. 2. Each of the plurality of terminal control units, when receiving a signal indicating an incoming call, sends an incoming call signal to a telephone or a facsimile device to which the terminal control unit is connected, and an incoming call notification unit therefor. A response detection unit that outputs a response detection signal by detecting an off-hook state of the telephone or a facsimile device to which the terminal control unit is connected; and, when receiving the response detection signal, monitors the signal from the partner terminal and calls the facsimile. A facsimile calling signal detection unit that outputs a detection result whether the signal is a signal or not, and is stored in the storage unit based on a detection result that indicates whether the signal is a facsimile calling signal from the facsimile calling signal detection unit. By comparing the number information, when the facsimile call signal is detected, the terminal connected to the facsimile machine of the private network 2. A line switching control unit for transferring to a control unit and transferring to a terminal control unit connected to a telephone of the private network when the facsimile call signal is not detected. Private branch exchange.