JPH08102773A - Telephone transfer device - Google Patents

Abstract

PURPOSE: To immediately call a telephone set connected to a telephone transfer device and to perform communication at the point of time when a transfer call is ended by providing a busy tone detection part and detecting the disconnection of a transfer origin telephone set. CONSTITUTION: By switching a termination line changeover relay 21 and an origination circuit changeover relay 12 to a transfer call part side, a telephone line 201 and the telephone line 202 are turned to a transfer call state through a transfer call part 70. Busy tones are outputted from a telephone network 600 to the telephone line 201 when the transfer call is ended and the transfer call origin telephone set 601 places a receiver and the next telephone set calling operation is performed when the busy tone detection part 71 detects them. A relay 32 is switched and a bell generation part 60 and a telephone set 402 are connected through the telephone line 302. When the receiver of the rung telephone set 402 is picked up, a hook detection part 42 detects it, the relays 32 and 12 are switched, the telephone set 402 and the telephone line 202 are connected and the communication with a transfer destination telephone set 602 is performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone transfer device.

[0002]

2. Description of the Related Art In a conventional telephone transfer device, when the transfer call is completed, the telephone is disconnected and the telephone connected to the telephone transfer device is called again to make a call.

[0003]

The conventional telephone transfer device has the following drawbacks. (B) It took time to convey the important contents generated by the call received by the transfer destination telephone to the person in the office in order to make the call again. (B) When receiving from a car phone, it was very difficult to dial again while driving. The present invention has been made to solve these drawbacks.

[0004]

A hook detector (41-42) for monitoring a telephone call state, a bell generator (60) for generating a bell signal for calling the telephone, and a relay for switching the bell generator. (32), a transfer call unit (70) for performing a transfer call, and a relay (21) for switching the receiving side line
A line switching relay (12) and a busy tone detector (71) for detecting disconnection of the transfer source telephone.
The present invention is a telephone transfer device configured as described above.

[0005]

The telephone line 1 (201) and the telephone line 2 (20) are switched by switching the relay (21) for switching the incoming line and the relay (12) for switching the outgoing line to the transfer call side.
2) enters the transfer call state via the transfer call unit (70). After this, the transfer call ends and the transfer source telephone (60
When 1) puts the handset, a busy tone is output from the telephone network (600) to the telephone line 1 (201), and when this is detected by the busy tone detecting section (71), the following ringing operation of the telephone is performed. . By switching the relay (32) and coupling the bell generator (60) and the telephone 2 (402) through the telephone connection line (302), the bell of the telephone 2 (402) rings and the handset is lifted. When the hook detector (42) detects that the handset is lifted, the relay (32, 1,
2) to switch the telephone 2 (402) and the telephone line 2 (2
02) are combined to make a call with the transfer destination telephone (602).

[0006]

Embodiments of the present invention will be described below with reference to FIGS. Normally, the telephone line 1 (201) is connected with the relay (21) and the hook detection unit (41), and is further connected to the telephone 1 (401) via the telephone connection line 1 (301). Similarly, the telephone line 2 (202) is relay (1
2), relay (32), hook detector (41) and P
The B receiver (52) is connected, and the telephone connection line 2 (30
2) to connect to the telephone 2 (402). When a call is made from the transfer source telephone (601) to the telephone 1 (401) through the telephone line 1 (201), the operator in the office (500) lifts the handset and does not put the handset after receiving the call. Put the line on hold with and set the telephone 2 (402)
Makes a call to the transfer destination telephone (602) from the other party and dials a specific number for transfer by a PB signal. At this time, in this apparatus, the PB receiver (52) identifies the specific number, switches the relay (21) and the relay (12) to the transfer call unit side, and the transfer source telephone (601) and the transfer destination telephone (602). And are placed in the transfer call state. After that, when the transfer call ends and the receiver of the transfer source telephone (601) is placed, a busy tone is output from the telephone network (600) to the telephone line 1 (201). ), The following telephone call operation is performed. By switching the relay (32) to couple the bell generator (60) and the telephone 2 (402) via the telephone connection line (302),
The bell of telephone 2 (402) rings and lifts the handset,
When the hook detector (42) detects that the handset is lifted, the relay (12, 32) is switched to connect the telephone 2 (402) and the telephone line 2 (202), and the transfer destination telephone (602) is connected. Make a call with.

Further, even if the transfer source telephone (601) puts the receiver, the output of the busy tone from the telephone network (600) may be delayed, and in this case, the transfer destination telephone (602).
When a specific number for calling a telephone is dialed by the PB signal from, the same telephone calling operation as above is performed when the PB signal receiving section (72) identifies the specific number.

[0008]

According to the telephone transfer device of the present invention, it is possible to call a telephone whose transfer has been completed and make a call, so that it is possible to save wasteful time such as making a call again.

[Brief description of drawings]

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

FIG. 2 is a connection system diagram of a telephone line in which the device according to the present invention is installed.

[Explanation of reference signs] 12 relays, 21 relays 32 relays 41 hook detection section, 42 hook detection section 52 PB signal receiving section, 60 bell generation section 70 transfer call section, 71 busy tone detection section 100 this device 201 telephone line 1, 202 telephone line 2 301 telephone connection line 1, 302 telephone connection line 2 401 telephone 1, 402 telephone 2 500 office, 600 telephone network 601 transfer source telephone, 602 transfer destination telephone

Claims (1)

[Claims] 1. A hook detector (41-42) for monitoring a telephone call state, a bell generator (60) for generating a bell signal for calling the telephone, and a relay (32) for switching the bell generator. , Transfer call unit for transfer call (70)
A caller side line switching relay (21), a caller side line switching relay (12), and a busy tone detection unit (71) for detecting disconnection of the transfer source telephone. Then, the telephone (402) is called and the transfer destination telephone (60
A telephone transfer device characterized in that it enables a call with 2).