JPS61219252A - Responding adapter for telephone set - Google Patents

Abstract

PURPOSE:To ring a buzzer even in a receptacle which is not connected to a telephone set by providing an adapter for responding to the telephone set in an inserting receptacle. CONSTITUTION:Telephone lines L1, L2 are connected to a relay receptacle 4 and connected to a signal detecting circuit through a transformer T. This signal detecting circuit outputs 'H' when receiving in the telephone line. When receiving in a responding adapter 2 to which a telephone set 5 is not connected, since the output of a plug detecting section is 'L', a ring back tone generator operates and the calling sound is generated. However, in a responding buzzer to which the telephone set 5 is connected, the telephone set 5 is connected to the L1, L2, a bell incorporated in the telephone set 5 rings, the responding buzzer detects a connection of the plug and outputs 'H', so that even if the receiving signal is detected, the ring back tone generator is not operated and the ring back tone is not generated.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to technology for telephone-related equipment that transfers calls, calls, answers, etc. between a plurality of telephones connected to a telephone line.

(Background Art) Conventionally, when connecting a telephone to a telephone line, it is possible to make a call by inserting the telephone's plug into a power outlet as shown in FIG. However, with this method, the number of bells that can be connected to one telephone line is 3 or less, including the attached bell, according to the technical standards of the Telecommunications Corporation. It was impossible to send it from anywhere else.

(Purpose of the invention) To provide a telephone answering adapter in a plug outlet, to generate a ringing tone when a call is received from a telephone line, and to generate the ringing tone of a telephone connected to the answering adapter without any loss. make it possible to

(Disclosure of the Invention) The present invention will be explained below based on FIGS. 2 to 4 showing one embodiment.

FIG. 3 shows an example of the system configuration of the present invention. A house can be equipped with up to 10 outlets 1, into which the relay plug 3 of the response adapter 2 can be inserted, and up to 2 telephones 5 can be connected to the relay outlet 4 of the response adapter 2. There is.

FIG. 4 shows a block diagram of the ring tone generator of the response adapter 2. Ll * Ll telephone line is relay outlet 4
It is connected to the signal detection circuit via the transformer K and the transformer T. This signal detection circuit outputs rl (J) when there is an incoming call on the telephone line.Also, when one plug of the telephone @5 is connected to the relay outlet 4, the output from the plug detection section that detects it is inverted. Then, an AND operation is performed with the signal detection circuit described above, and the ring tone generating device is operated thereby to generate a ring tone from the ringing device.To explain the operation of the above circuit, the response adapter to which the telephone Ia5 is not connected. When there is an incoming call on 2, the output of the plug detection section is rLJ.
Therefore, the ringing tone generating device operates and a ringing tone is generated. However, at this time, in the answering buzzer connected to the telephone 5, the telephone @5 is connected to Ll * Ll, so the built-in bell of the telephone Ia5 rings, and the answering buzzer detects the connection of the plug and sends rHJ. Therefore, even if an incoming call signal is detected, the ringing tone generating device does not operate and no ringing tone is generated. When the above response adapter 2 is used in the system shown in Fig. 3, a telephone ring tone will be generated from the response adapter 2 that is not connected to the telephone @5, and the telephone @ that is connected to the response adapter 2 or the plug outlet IIC will be generated. In S, the bell of telephone l1l15 rings, and in response adapter 2 to which telephone 1115 is connected, the telephone ring tone of response adapter 2 does not ring;
No two sounds are mixed together.

C. Effects of the Invention As explained above, this invention enables the buzzer to sound even when the telephone 5 is not connected to the outlet lIC, so that the incoming call can be known, and when the telephone 5 is connected, the buzzer can sound. In the response adapter 2, the ring tone of the response adapter 2 is not transmitted, so the ring tone can be transmitted without damaging the tone of the telephone 5 selected by the user.

[Brief explanation of drawings]

ts1 is a circuit diagram showing a conventional example. @Figures 2 to 4 show an embodiment of the present invention, and Figure 2 is a circuit diagram,
FIG. 3 is a circuit diagram showing the system, and FIG. 4 is a block circuit diagram. l: Outlet, 2: Response adapter, 3: Relay plug, 4: Relay outlet, 5: Telephone Nl s Ll, L: Telephone line.

Claims (1)

[Claims] (1) An adapter inserted between a telephone outlet and a telephone has a relay plug to be inserted into the telephone outlet and a relay outlet to which the telephone plug is inserted, and when there is an incoming signal from the telephone line, the inside of the adapter is A telephone characterized by having a function of generating a ring tone and notifying the outside, and also having a function of stopping the generation of the ring tone when the telephone is plugged into the relay outlet. response adapter for.