JPH0556126A - Call device - Google Patents

Abstract

PURPOSE:To use a call terminal which makes a call by means of acoustic- connecting a DTMF signal to a receiver even in a dial pulse line. CONSTITUTION:The DTMF signal generated from the external DTMF call terminal 1 is transmitted to a DTMF detection part 2 by a acoustic-connection part 6 using the receiver and the like. The DTMF detection part 2 analyzes the DTMF signal and decodes it into a telephone number to be called so as to transmit the decoding information to a control part 3. It controls a dial pulse generation part 4 by the decoding information and transmits a dial pulse signal corresponding to the telephone number to a telephone line 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a calling device which is connected to a telephone line and has a call function and a facsimile communication function.

[0002]

2. Description of the Related Art Conventionally, a calling device of this type is connected to a telephone line for DTMF (composite frequency) and
The DTMF signal generating terminal generates a DTMF signal corresponding to the telephone number of the other party, and inputs the generated DTMF signal by acoustic coupling through the receiving section of the calling device to call the other party. This is because the name and the telephone number corresponding to the name are registered in advance in the DTMF signal generating terminal, and when the name of the person who wants to make a call is selected, the corresponding telephone number is generated as the DTMF signal, and the generated DTMF signal is generated. Is transmitted to the telephone line via the receiving section by acoustic coupling.

[0003]

Such a conventional calling device can be applied to a telephone line for DTMF, but even if a DTMF signal is sent to the telephone line for dial pulse, it is sent to the other party. There is a problem in that it cannot be used when the telephone line is a dial pulse line because it cannot make a call.

[0004]

In order to solve the above-mentioned problems, the present invention provides a D input from the outside by acoustic coupling.
A DTMF detecting unit for analyzing the TMF signal, a dial pulse generating unit for transmitting a predetermined dial pulse signal to the telephone line according to the inputted telephone number, and a means for converting the DTMF signal into a dial pulse signal and calling. It is equipped with.

[0005]

[Operation] DTMF input by acoustic coupling from the handset
The signal is converted into a dial pulse signal and sent to the dial pulse line.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention.
In the figure, 1 is an external DTMF calling terminal, 2 is a DTM
F detection unit, 3 control unit, 4 dial pulse generation unit, 5
Is a telephone line, and 6 is an acoustic coupling section.

As described above, the name and the telephone number corresponding to the name are registered in advance in the external DTMF terminal 1. Then, when the name of the person who wants to make a call is selected in this external DTMF terminal 1, the telephone number corresponding to this is selected and the DTMF signal (composite frequency signal; push tone).
Occurs as. The generated DTMF signal is detected by the DTMF detection unit 2 via the acoustic coupling unit 6, converted into a dial pulse signal, and then sent to the telephone line 1 for dial pulse.

That is, the DTMF signal generated from the external DTMF calling terminal 1 is sent to the DTMF detecting section 2 by the acoustic coupling section 6 using a receiver or the like. And D
The TMF detection unit 2 analyzes the DTMF signal, decodes it into a telephone number to be called, and transmits the decoded information to the control unit 3. The control unit 3 controls the dial pulse generation unit 4 based on this combination information, and sends a dial pulse signal corresponding to the telephone number to the telephone line 5. After that, when the other party is called and the other party answers, a telephone call, a facsimile communication or the like is performed.

In this way, the external DTMF calling terminal 1 which makes a call to the other party by acoustically coupling the DTMF signal and sending it to the receiver or the like can be used also in the dial pulse line.

[0010]

As described above, according to the present invention, the DTMF signal input by acoustic coupling from the handset is converted into the dial pulse signal and transmitted to the telephone line. Therefore, the telephone line is a dial pulse line. Even in this case, it is possible to make a dial call.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a calling device according to the present invention.

[Explanation of symbols]

 1 External DTMF calling terminal 2 DTMF detection section 3 Control section 4 Dial pulse generation section 5 Telephone line 6 Acoustic coupling section

Claims (1)

[Claims] 1. In a calling device connected to a telephone line and provided with a call function and a facsimile communication function, a DTMF detection unit for analyzing a DTMF signal input from the outside by acoustic coupling and a telephone number input according to the DTMF detection unit. A dial pulse generator for transmitting a predetermined dial pulse signal to the telephone line, and means for converting the DTMF signal into the dial pulse signal and making a call are provided, and the DTMF signal input by acoustic coupling from the handset is received. A calling device characterized in that it is converted into the dial pulse signal and transmitted to a dial pulse line.