JPS6199450A - Telephone transfer device - Google Patents

Abstract

PURPOSE:To call a person in a remote place from a public telephone with the charge for a telephone call of one coin by calling the first telephone once and calling another telephone again from the second telephone through the first telephone. CONSTITUTION:The call signal inputted from a telephone line A is applied to an incoming detecting circuit 1 and is detected to turn on switches SW1 and SW2, and a DC circuit of telephone lines A and B is closed through load circuits 3 and 4, and simultaneously, telephone line A and B are connected to a bidirectional amplifier 5 through capacitors C1 and C2. The dial tone inputted from the telephone line B is transmitted to the telephone set which calls the telephone line A; and when a push button dial signal is transmitted from this telephone set, the push button dial signal is amplified through the bidirectional amplifier and is outputted to the telephone line B. The telephone line B is connected to another objective telephone line in accordance with the push button dial signal. When the telephone line B and the objective telephone line C are connected, a telephone line C and the telephone line are connected through the bidirectional amplifier by an AC signal, and conversation or the like is possible.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a telephone device, and more particularly to a telephone transfer device that transfers a caller to a desired location.

Traditionally, when people went out to make a call, they used a public telephone. Public telephones had the problem of requiring coins to be inserted in units of 1,000 or 100 yen, and in the case of remote locations, a large number of coins were required.

The present invention has solved the above-mentioned problems, and its purpose is to provide a telephone transfer device that makes it possible to make calls to distant places with a small number of coins.

The features of the present invention include a ringing signal detecting means connected to a first telephone line and detecting a ringing signal inputted from the first telephone line; The DC circuit of the line is closed and the amplifier is connected to the first. having a switching means for connecting to a second telephone line;
A ringing signal applied from the first telephone line causes the first . The telephone transfer device is characterized in that a direct current circuit of a second line is connected and an amplifier is connected to output a push button dial signal applied from the first telephone line to the second telephone line.

The present invention will be described in detail below using one drawing.

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

A and B are different telephone lines.

A calling signal input from telephone line A is applied to incoming call detection circuit 1 and detected. The incoming call detection circuit 1 outputs a high level to the control circuit 2 when detecting the above-mentioned paging signal. The calling signal is, for example, an alternating current signal of 75 V RMS, and this signal can be easily detected by using a photocoupler using a neon lamp or the like.

When the control circuit 2 receives a high level from the incoming call detection circuit 1, it controls the relay circuit and switches SWI.

SW2 was turned on. Switch SW1. When SW2 is turned on, the DC voltages applied to telephone lines A and B flow to DC load circuits 3 and 4, respectively, and the telephone lines A,
Close the DC circuit of B. As a result, telephone lines A and B
goes off-hook, and the ringing signal input from telephone line A stops.

The communication path is set. In other words, it is connected to the telephone set X that was connected to the telephone line A. Moreover, telephone line B is simply a DC circuit connected.

A dial tone, for example 40011z, is input.

On the other hand, when the switches SWI and SW2 are turned on, the direct current circuits of the telephone lines A and B are closed via the load circuit 3.4, and at the same time the telephone lines A and B are bidirectionally connected via the capacitors C1 and C2. Connected to amplifier 5. As a result, alternating current signals such as voice signals and pushbutton dialing signals input from telephone line A are output to telephone line B. Conversely, an AC signal input from telephone line B, for example, a dial tone of 400H2, is output to telephone line A.

In this state, the dial tone input from telephone line B is transmitted to the telephone that made the call to telephone line A, and when a push-button dial signal is transmitted from this telephone, the push-button dial is dialed via the bidirectional amplifier. The signal is amplified and output to telephone line B. Telephone line B is connected to a target telephone line C (not shown) in response to this push button dialing signal. When telephone line B is connected to the target telephone line C, the telephone line becomes possible.

As described above, the present invention does not directly call the destination telephone, but first calls two telephones (telephone line A), and then calls the destination.

That is, make a call to the telephone set connected to telephone line A to set up a call path.

Thereafter, by inputting the telephone number of the target place from the telephone set connected to telephone line X, telephone line B and the target telephone line X are set in a communication path state.

As a result, this is equivalent to connecting telephone line X and telephone line C. It should be noted that when telephone line X and telephone line A are connected, the dial tone input from telephone line B is also added to telephone line X, confirming that the push button dial tone for transfer can be input.

FIG. 2 is a circuit diagram of the bidirectional amplifier 5 of the embodiment of the present invention shown in FIG. Hybrid circuit for two-wire and four-wire conversion 6.7 and amplifier 8.9. It consists of a load circuit 10.11. This circuit is a general circuit, and a signal input from terminal a is applied to an amplifier 8 via a hybrid circuit 6. The signal is then amplified by the amplifier 8 and output to the terminal via the hybrid circuit 7. Further, a signal input through the terminal is applied to the amplifier 9 via the vibration lift circuit 7.

The signal is then amplified by the amplifier 9 and output to the terminal a via the hybrid circuit 6. The load circuit connected to the hybrid circuit 6.7 is a matching circuit for matching the terminals a and b.

In the embodiment of the present invention shown in FIGS. 1 and 2, the amplification function of the bidirectional amplifier 5 is used to amplify the push button dial signal and output it to the telephone line B. FIG. 3 is a circuit diagram of another embodiment of the present invention in which a decoder/encoder is provided in the bidirectional amplifier 5 in addition to the increase function shown in FIG.

At the time when telephone line X and telephone line A are connected, switches SW3 to SW5 are connected to the side shown in the figure. In this state, a signal applied from terminal a, such as a pushbutton dial signal, is applied to the hybrid circuit 6. It is applied to the decoder 12 via switch sw4. (At this point, that is, when telephone line ) The push button dial signal input to the decoder 12 is decoded into a pulse signal. Since there are more than ten types of pushbutton dial signals t 1 , they become, for example, 4-bit coded pulse signals, which are input to the encoder 13 and converted into pushbutton dial signals again. (The encoder 13 outputs the tone of the pushbutton dial signal in response to the input digital data.) The tone signal converted to the pushbutton dial signal by the encoder 13 is applied to the amplifier 8 via the switch SW3 and is amplified. . And hybrid throat circuit 7
It is output to the terminal via. The signal is then output to telephone line B as shown in FIG. In the bidirectional amplifier shown in Figure 2, when telephone line A and telephone line No action is required when the is connected. However, in the case of the circuit shown in Figure 3, when telephone line B and telephone line C are connected, a bidirectional amplification function must not be inserted between telephone line A and telephone line B. A link detection circuit 14 is a circuit that detects the connection between telephone line B and telephone line C. This detection circuit 14 is connected to telephone line B, and detects that the polarity of telephone line B is reversed when connected. Then, connect switches SW3 and SW4 to the opposite side, and switch
I turned on W5. After the link detection circuit 14 detects the connection and controls the switch, it operates in the same way as the bidirectional amplifier shown in FIG. Further, referring back to FIG. 1, explanation will be given. A termination detection circuit 15 is connected in parallel to the DC load circuit.

The end detection circuit is a circuit that detects that a conversation or the like during transfer of this device has ended and that the telephone line C has been opened, that is, it has become an on-footer. Generally, the polarity of the telephone line B is reversed by setting it to an on-footer, so the end detection circuit 15 detects this reversal.In the embodiment of the present invention, the link detection circuit 14 and the end detection circuit 15 are Although they are provided separately, they are both circuits that detect polarity reversal, and it is also possible to detect it with one of the circuits.

As described above, the present invention transfers a call by making a call once to an individual's first telephone and then calling another telephone from another second telephone via that individual telephone. 2 According to the present invention, when making a call to the individual telephone set from a public phone, it is possible to make a call to a faraway place for one coin and one call charge. Furthermore, dial-in international calls are also possible. Furthermore, by setting and storing the speed dial in the second telephone mentioned above, it becomes possible to use the speed dial even when away from home.

[Brief explanation of drawings]

FIG. 1 is a circuit configuration diagram of a first embodiment of the present invention. FIG. 2 is a circuit diagram of a bidirectional amplifier, and FIG. 3 is a circuit diagram of another embodiment of the present invention. 1... Incoming call detection circuit, 2... Control circuit. 3.4... DC load circuit, 5... Bidirectional amplifier, 12... Decoder. 13... Encoder, 14... Link detection circuit, 15... End detection circuit. Patent Applicant Tsutomu Jinno Attorney Yoshiyuki Osuga Figure 1 Figure 2 Figure 3

Claims (3)

[Claims] (1) A calling signal detecting means that is connected to a first telephone line and detects a calling signal inputted from the first telephone line, and the output of the calling signal detecting means is added, and the direct current of the first and second telephone lines is and switching means for closing the circuit and connecting the amplifier to the first and second telephone lines, and closing the direct current circuits of the first and second lines by a ringing signal applied from the first telephone line. and an amplifier is connected thereto to output a push-button dial signal applied from the first telephone line to a second telephone line. (2) The telephone transfer device according to claim 1, wherein the amplifier is a bidirectional amplifier. (3) the amplifier includes decoding means for detecting a push-button dialing signal applied from the first telephone line; and encoding means for outputting the push-button dialing signal, to which the output of the decoding means is applied, to the second telephone line; a communication path setting detection means for detecting that a communication path has been set on the second telephone line; and a connection for connecting the amplifier to the first and second telephone lines using a bidirectional amplifier and the communication path setting means. 2. A telephone transfer device according to claim 1, further comprising means for transmitting a telephone.