JPH0117881Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transfer telephone device that enables pager calls.

In the conventional transfer telephone device, when a caller A calls a telephone B as shown in FIG. 1, a telephone of a transfer destination D is called. C indicates the calling side. Transfer destination D
The moment the telephone answers the caller A and the forwarding destination D, the forwarding telephone device operates so that the caller A and the forwarding destination D can talk.

Immediately after this call ends, the forwarding telephone device calls the pager E using the telephone line of telephone C and informs the pager holder (the forwarding telephone device installer) that the call made using the forwarding telephone device was received at the forwarding destination. Inform.

However, as mentioned above, when using the conventional telephone transfer device, there was a drawback that the pager holder who had used the transfer telephone device and knew that the call had been transferred to the caller could not directly talk to the caller. .

In addition, it is only possible to know that a call was received from an unspecified caller to forwarding destination D, but it is not possible to know who the caller was.
Another drawback is that it is necessary to inquire of the transfer destination D about the contents.

The present invention has been made in view of the above, and an object of the present invention is to provide a telephone transfer device that eliminates the above-mentioned drawbacks.

The present invention will be explained below with reference to examples.

FIG. 2 is a block diagram showing one embodiment of the present invention.

In FIG. 2, 10 is a transfer telephone device. The transfer telephone device includes a control circuit 11, a called line closing relay 12 driven by the output of the control circuit 11,
Sending side line closing relay 13, relay 14 for closing the receiving side line and sending side line, bell starting circuit 15 of telephone B, bell starting circuit 16 of telephone C, dial signal generator 17 of telephone C, specific It is equipped with a signal detection circuit 18 and a bidirectional amplifier 19, the incoming line 21 is connected to the bell activation circuit 15 via the contact ₁₂₁ of the relay 12, and the transmitting line 22 is connected to the
The output of the dial signal generator 17 is supplied to the transmission line 22 through the relay contact 13 ₁ , and the signal received from the transmission line 22 is connected to the bell starting circuit 16 through the contact 13 ₁ of 3. 18, the incoming line 21 is connected to one input end of the bidirectional amplifier 19 via the relay contact 12 ₁ , and the sending line is connected to the bidirectional amplifier 19 via the relay contacts 13 ₁ and 14 ₁ in series circuit. is connected to the other input end of the . The control circuit 11 receives a signal from the bell activation circuit 15, detects an incoming call, and energizes the relay 13 from the time the incoming call is detected until the caller releases the line, similar to an answering machine, etc., and then activates the relay 13.
2 is once excited to drive the dial signal generator 17, and after sending out the dial signal, the relay 13 is controlled to be de-energized and waits for an incoming call to the sending line 22. When a call is received on the sending line 22, the relay 13 is excited in the same way as when the call is received on the receiving line 21, and the specific signal from the sending line 22 is activated by the output detected by the specific signal detection circuit 18. 14 is configured to be excited.

In addition, A indicates the caller, 1 indicates the caller's phone,
2, 3 and 4 are exchanges, 5 is a pager calling radio station, 6 is a radio station calling line, 7 is an antenna, and 8 is a telephone used by a pager user.

In one embodiment of the present invention constructed as described above, when a caller A makes a call to telephone B, control circuit 11 energizes relay 12 when a ringing call is received from telephone 1. This excitation causes relay 1 to
2 connects the incoming line 21 to one input end of the bidirectional amplifier 19. Caller A continues to hold the handset of telephone 1. The control circuit 11 is a relay 12
Subsequently, the relay 13 is once excited, the dial signal generator 17 is driven, and the transmission line 22 is used to call the pager E. Control circuit 1
Once a predetermined period of time has passed, the relay 13 is once energized by the relay 1, and the relay 13 is brought into a non-energized state. During this time, the dial signal generator 17 generates a dial signal, and the holder of the pager E is paged via the transmission line 22, the exchange 8, the pager calling line 6, the pager calling radio station 5, and the antenna 7. The called pager holder calls telephone C using telephone 8.
Upon receiving a call from the telephone 8, the control circuit 11 calls the caller A.
The relay 13 is energized in the same way as when there is a telephone call. The pager holder sends out a predetermined specific signal via the telephone set 8. This specific signal is supplied to the specific signal detection circuit 18 because the relay contact 13 ₁ is controlled to be in the make state. When the specific signal sent is a specific signal determined for the pager user, the specific signal detection circuit 18
generates an output to control circuit 11. Upon receiving the output from the specific signal detection circuit 18, the control circuit 11 excites the relay 14. As the relay 14 is energized, the relay contact ₁₄₁ becomes in the make state, and the receiving line 21 and the transmitting line 22 are connected, allowing the caller A and the pager user to talk to each other.

Upon completion of this mutual conversation, the state returns to the state of waiting for an incoming call from the receiving side line 21.

As described above, in the present invention, when a transfer telephone receives a call from a third party, the pager is called via the transmitting line of the telephone, and the pager holder who receives the call calls the telephone. When a specific signal is sent along with the call, the line from the third party is connected to the line from the pager holder, allowing a direct conversation between the third party and the pager holder. Therefore, the third party has the effect of being able to talk only with the desired party.

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining how a conventional transfer telephone device calls a pager holder, and FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention. 11...control circuit, 12, 13 and 14...
Relays, 15 and 16... Bell starting circuit, 17
... Dial signal generator, 18 ... Specific signal detection circuit, 19 ... Bidirectional amplifier, E ... Pager.

Claims (1)

[Scope of utility model registration request] dialing signal generating means for calling a pager through a transmitting line when a bell signal arrives on a receiving line; detecting means for detecting a specific signal sent after the pager holder makes a call to the transmitting line; A transfer telephone device comprising: a closing means for closing the receiving line and the transmitting line when a specific signal is detected by the detecting means.