JPS62100056A - Multi-functional telephone set - Google Patents

Abstract

PURPOSE:To apply the data communicating function to the telephone set under the dial pulse signal system with a simple constitution by generating the PB signal which can be controlled by the push-button switch at the time of connecting the line by the detection of the line connecting condition between callers. CONSTITUTION:A line condition detecting circuit 3, when the non-polar calling electric current is detected, changes over and connects a keyboard 2 from a DP signal generating circuit 4 to a PB signal generaiting circuit 5. As the result, the PB signal can be controlled by the keyboard 2, and by applying the PB signal to the transmitter, the data communication can be realized besides the usual calling. Next, when accompanying the completion of the communication, the release is obtained, the line condition detecting circuit 3 changes over and connects the keyboard 2 from the PB signal generating circuit 5 to the DP signal generating circuit 4.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a telephone, and more particularly to a multifunctional telephone that is a dial pulse signal type telephone with a data communication function added.

In the prior art subscriber telephone network, two methods have been established as selection equalization methods for a calling party to designate a called party.

These include the dial pulse signal system (hereinafter referred to as DP signal system) for single-rotation dial engraving handsets and the pushbutton dial signal system (hereinafter referred to as PB signal system) for pushbutton type telephones.

Of these, the latter PB double signal system lower push button type f! The handset can use a push-button dial signal (hereinafter referred to as PB double signal) consisting of two audio frequencies, high group and low group, as a selection signal before a line is connected, and as a data signal after a line is connected. It is called Butshuhon, and is used, for example, in Japan National Railways seat reservation services.

On the other hand, is the DP double signal system lower rotary dial telephone the other party? Dial pulse signal (hereinafter referred to as DP double signal), which is an intermittent DC signal corresponding to the Ii call number, is simply a selection signal for line connection.Recently, telephones under this DP double signal system also use a push dial instead of a rotary dial. Button switch device!
1 telephone has become popular.

However, conventional telephones of this kind only simplify the dialing operation for specifying the called subscriber, and there was a problem in that they could not be used as a terminal device for a computer system such as the above-mentioned telephone.

Purpose The purpose of the present invention is to improve such conventional problems and to
It is an object of the present invention to provide a multifunctional telephone that can be used as a terminal device for a computer system even in a telephone equipped with a double signal type lower push button switch.

Structure In order to achieve the above object, the multifunctional telephone according to the present invention is connected to a subscriber telephone network that adopts the DP signaling method as a means for specifying a called subscriber, and is equipped with a push button switch instead of a rotary dial. The present invention is characterized in that it is equipped with a detection circuit that detects the line connection state between parties, and a circuit that generates a PB double signal that can be controlled by the push button switch when the line is connected based on the detection.

Hereinafter, the configuration of the present invention will be explained in detail using examples.

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

In the figure, 1 is a multi-function telephone of the present invention, and 10
is an exchange in the telephone office, and multifunction telephone 1 is connected to exchange 1.
0 to a subscriber telephone network that uses DP signaling. The multifunction telephone 1 includes a keyboard 2 consisting of a plurality of pushbutton switches, a line state detection circuit 3 that detects the line connection state between the caller from the communication current and switches the output of the keyboard 2, and a DP signal generator that generates a DP double signal. Circuit 4 and P
A PB signal generation circuit 5 for generating a B-times signal, and a keyboard 2. Transmitter 7. Handset 8. Components such as Bell 9,
- Also from the telephone circuit 6 that organically connects each component! will be accomplished.

FIG. 2 is a diagram showing the flow of each signal to explain the operation of the multifunction telephone according to the present invention.

In FIG. 2, the caller uses the main body of the calling side telephone 1a to
When the handset is picked up, the telephone enters the 31 call state and the switch 10a is activated through the subscriber line (21) and a dial tone is received (22). Next, in order to select an outgoing line to the exchange 10a, the caller operates the keyboard 2 to select the DP double signal exchange I.
The exchange 10a that received this sends it to Qa (23)
is stored in the DP double signal, and a start signal is sent to the exchange TAB through the trunk line to start it (24)
.

Switch IQb exchanges a startup completion signal when startup is complete.
The exchange 10a receives this and sends the called party's telephone number, which is a DP double signal, to the exchange TAB (26).

As a result, the exchange filob sends a ring tone to the calling side telephone 1a and a ringing bell signal to the receiving side telephone 1b (27).

At this stage, when the called party picks up the handset of the receiving telephone 1b, a so-called response occurs (28), and the telephone exchange 10a-10
A response signal is exchanged between telephones 1a and 1b (29), and at the same time, the communication current between telephones 1a and 1b is reversed from positive polarity to negative polarity (30).

This state continues as the line connection state, and a call is made using this non-polar call current (31).

On the other hand, when the line state detection circuit 3 detects the lossy communication current, the line state detection circuit 3 switches the keyboard 2 to D P (No.
Switching connection is made from l'14 to the FB signal generation circuit 5.

As a result, the P[3 signal can be controlled by the keyboard 2, and by adding the PB double signal to the transmitter, data communications can be realized in addition to normal phone calls.

Next, when the handset of the receiving telephone 1b is lowered due to the end of communication, a so-called recovery occurs (32), and a call termination signal is sent from the exchange 10b to the exchange@10a (33), and at the same time, the polarity of the communication current becomes negative. Reversal from polarity to positive polarity (34
), therefore, the line state detection circuit 3 detects the keyboard 2 as
Switching connection is made from the PB signal generation circuit 5 to the DP signal generation circuit 4.

After Q, the line is restored when the caller hangs up the handset of the calling side telephone 1a (35).

In the above embodiment, a pushbutton switch under the DP (No. It is also possible to configure and implement 5 in a separate unit I-.

Effects As explained above, according to the present invention, a data communication function can be added to a telephone set using a dial pulse signal system with a simple (one-mail configuration).

[Brief explanation of drawings]

FIG. 1 is a block diagram of a multifunction telephone showing one embodiment of the present invention, and FIG. 2 is a diagram showing the flow of each signal to explain the present invention in detail. 1: Multifunction telephone, 2: Keyboard, 3: Line status detection circuit, 4: DP signal generation circuit, 5: PB signal generation circuit,
6: Telephone circuit, 7: Transmitter, 8: Receiver, 9: Bell,
10: Exchange machine. Patent applicant Rico Co., Ltd. - -1. J, Pa

Claims (1)

[Claims] (1) In a telephone that is connected to a subscriber telephone network that uses a dial pulse signal system and is equipped with a pushbutton switch instead of a rotary dial as a means for specifying a called subscriber,
A multifunctional telephone comprising: a detection circuit that detects a line connection state between callers; and a circuit that generates a pushbutton dial signal that can be controlled by the pushbutton switch when the line is connected based on the detection.