JPS61187456A - Dial device - Google Patents

Abstract

PURPOSE:To offer various services and to use a pushbutton dial with good operability for a low cost dial pulse (DP) line by sending serially a multi-tone frequency tone signal and a dial pulse corresponding to a numeral inputted from an input means for dial numbers or the like. CONSTITUTION:When a subscriber applies dial operation from a pushbutton dial 6, a number corresponding to the depressed button is read by a microprocessor 7 by software control, a contact (b) in a dial pulse sending circuits 3 by the software control is closed, a contact (a) is intermitted at the speed of 20 times/sec or 10 times/sec for the number of times corresponding to the depressed number to transmit a DP signal. A PB transmission circuit 4 is driven succeedingly and 1 digit of PB signal corresponding to the numeral inputted from the pushbutton dial 6 is sent. That is, every time the pushbutton dial 6 is depressed once, the DP signal and PB signal corresponding to the numeral are sent serially.

Description

[Detailed Description of the Invention] [Summary of the Invention] In order to improve dial operability and serviceability of a telephone set, a dial pulse sending means, a multi-frequency tone signal sending means, and a dial number input means are provided, and dial pulses and multi-frequency tone signal sending means are provided. By serially transmitting frequency tone signals, push-button dialing can be used on low-cost lines and a variety of services can be received.

[Industrial application field]

The present invention relates to a dialing device, and in particular to a dialing device that automatically receives numbers input from a push button dial (hereinafter referred to as D).
(hereinafter referred to as P) signal and dial multifrequency tone (hereinafter referred to as P
This relates to a dial device that converts the signal into a signal (referred to as B) and sends it out.

[Conventional technology]

The telephone dialing formats currently in use include DP and P.
There are two types of B. DP is a system in which dialed numbers are transmitted by intermittent direct current a number of times corresponding to the number of dialed numbers, and a rotating dial is used for the dial. PB is a method of transmitting dialed numbers and the like as a tone signal that combines two frequencies within the corresponding audio band (300 Hz to 3400 Hz), and a push button dial is used for dialing.

Comparing the two, the PB (push button dial) is more convenient in terms of dial operability because it can be operated easily in a shorter time. Also, from the perspective of signal transmission, in DP, even if you try to use this to transmit numerical information between terminals or between a terminal and a center after a call has started, a carrier line is used as an intermediate transmission path. In contrast, PB cannot be transmitted because DC information cannot pass through it, whereas PB has the advantage that it can be easily transmitted because it uses a signal within the voice band.

However, on the other hand, from the perspective of usage fees.

Since FB lines are more expensive than DP lines, DP (rotary dial) is more commonly used for telephones that are used only for normal voice calls and are not used very frequently. Therefore, in order to improve operability, a dial device has been proposed in which dial numbers input by operating a push button dial are converted into a DP multiplied signal and sent out.

However, if this device is used, the dialing operation becomes convenient, but after the call starts, it becomes difficult to dial from one terminal to another.

Alternatively, numerical information etc. could not be transferred between the terminal and the center to provide, for example, Shinkansen seat reservation service.

[Purpose of the invention]

The purpose of the present invention is to improve dial operability and serviceability by improving such conventional problems and automatically converting numbers inputted from push button dials into PB double signals and DP double signals and sending them out. Our goal is to provide an excellent dialing device for both.

[Structure of the invention]

In order to achieve the above objects, 1 the dialing device of the present invention has a dial pulse sending means, a multi-frequency tone signal sending means, and an inputting means for dialing numbers, etc. It is characterized by serially sending out multi-frequency tone signals and dial pulses corresponding to numbers, etc.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a dial device showing an embodiment of the present invention.

In FIG. 1, 1 is a subscriber connection terminal connected to the line, 2 is a hook switch that is closed when the handset is off-hook, 3 is a dial pulse sending circuit that sends out a DP double signal, 4 is a PB sending circuit that sends a PB double signal, Reference numeral 5 is a telephone communication circuit to which a subscriber line is connected, 6 is a dial number input box (push button dial), and 7 is a microprocessor that performs software control of each circuit.

The subscriber line connection terminal l connects subscriber lines Ll and L for DP signals.
Connected to 2. When the subscriber takes the telephone receiver off-hook in order to make a call, the hook switch 2 is closed and a loop is closed between the subscriber lines L1 and L2 through the 1-communication circuit 5. This causes the exchange to send a dial tone. 6 is a dial number input device, and FIG. 5 shows an example using a push button dial. When the subscriber performs a dial operation using the push button dial 6, the number corresponding to the pressed button is read into the microprocessor 7 under software control. Under software control, the microprocessor 7 closes the contacts A in the dial pulse sending circuit 3, and connects the contacts A at a rate of 20 times/second or 10 times/second for the number of times corresponding to the number pressed, etc. Sends DP double signal. Contact point.

Once the DP double signal has been sent out, it will be restored. Subsequently, the PB sending circuit 4 is driven to send out a one-digit PB signal corresponding to the number inputted from the push button dial 6.

That is, each time the push button dial 6 is pressed once, a DP double signal and a PB double signal corresponding to that number are serially transmitted. An example of this is shown in FIG.

Here, the numbers on the push button dial are It 5 It and II
This shows the case when 211 is pressed.

The PB double signal and DP double signal sent out in this way,
Depending on the type of line connected, only signals corresponding to PB double signal or DP double signal will be received, so if you connect this device to DP
If connected to a signal subscriber line, it will be received at the DP double signal subscriber line exchange when dialing a call, and it will be possible to receive it at the PB double signal service center when using the Shinkansen seat reservation service, etc. Become.

As the PB signal sending circuit 4, a known circuit used in existing PB telephones can be used as is.

In this way, according to this embodiment, the DP multiplied signal and F
Since the B double signal can be automatically sent serially, it becomes possible to use push-button dialing on an inexpensive DP line, and it also becomes possible to freely transfer the PB signal during a call.

In the above explanation, we have taken an example in which a dial multi-frequency tone signal is used as the tone signal, but any signal that can transmit one-frequency information may be used. and F S K (F
It is also possible to use signals such as high frequency signals, and in some cases, signals outside the voice band may be used. Further, although an example in which a push-button dial is used as the dial number input device has been described, it goes without saying that devices other than this may also be used.

Further, the order of sending out the PB double signal and the DP double signal may be reversed to the above explanation, and in some cases, each signal may be sent out in groups of multiple digits.

〔Effect of the invention〕

As explained above, according to the present invention, the PB double signal and DP double signal corresponding to the dial operation are automatically sent out, so it is possible to use an easy-to-operate push-button dial on a low-cost DP line, and You can receive various services.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a dial device showing an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing an example of a sending signal waveform. 1: subscriber line connection terminal, 2: hook switch, 3: dial pulse sending circuit, 4: PB signal sending circuit, 5: telephone call circuit, 6: push button dial, 7: microprocessor. 5・' Figure 1, 5 Figure 2 Voltage between subscribers 51 and 52

Claims (1)

[Claims] (1) It has a dial pulse sending means, a multi-frequency tone signal sending means, and a dial number input means, and the multi-frequency tone signal corresponding to the number inputted from the dial number input means and the dial. A dial device characterized by serially sending out pulses.