JPS63303549A - Dialing system - Google Patents

Abstract

PURPOSE:To attain the automatic transmission of both a PBX line and an NTT line by providing an NTT line dial tone and a PBX dial tone detecting circuit in the MODEM having an automatic transmitting function. CONSTITUTION:After the off-hook, when a dial tone is detected by an NTT line dial tone detecting circuit 2, the dial signal of a telephone number stored in a telephone number storing part 4 is sent from a dial signal generating circuit 1. On the other hand, when the dial tone is detected by a PBX dial tone detecting circuit 3 with a dial tone detecting circuit 3, the dial signal of the dial number to connect from a PBX extension stored in a number storing part 5 to an NTT line is sent from the dial signal generating circuit 1, and next, when the dial tone is detected by the detecting circuit 2, the dial signal stored in the storing part 4 is sent from the generating circuit 1.

Description

[Detailed Description of the Invention] [Summary] When connecting a data communication modem with an automatic dialing function to an NTT line, a private branch exchange (hereinafter referred to as PBX) is used.
In order to enable automatic dialing even when connected to an extension of a PBX and connected to an NTT line via PBX, an NTT line dial tone detection circuit and a PBX dial tone detection circuit are installed, and after off-hook, the NTT line dial tone detection circuit When a dial tone is detected, it automatically sends a dial signal for the other party's phone number, and after going off-hook, the corresponding P
When the BX dial tone detection circuit detects a dial tone, it automatically sends a dial signal for the dial number to connect from the PBX extension to the NTT line, and then sends a dial signal for the other party's phone number. It was designed to do so.

[Industrial application field]

The present invention relates to an improvement in the dialing method of a data communications modem having an automatic dialing function.

It is desirable that the modem can automatically make a call both when connected to an NTT line and when connected to an extension of a PBX and then connected to an NTT line via the PBX.

[Conventional technology]

A conventional example will be explained below using figures.

FIG. 4 is a block diagram of the main parts of a conventional modem.

The automatic dialing function of a conventional modem is as shown in FIG.
to be memorized.

Next, when the user goes off-hook, the switch 7 is turned on and the NTT line to which it is connected is short-circuited, and the exchange (not shown) detects this and sends out a 400 Hz dial tone.

When the NTT line dial tone detection circuit 2 detects this dial tone, the control section 6' reads out the telephone number of the called party from the telephone number storage section 4, and the dial signal generation circuit 1 generates a dial signal of this telephone number. Send out.

In this way, when you enter the phone number of the person you want to call from an external device, the modem's automatic dialing function will then call the person you want to call.

[Problem that the invention seeks to solve]

However, conventional modems with automatic dialing functions,
When connecting to an extension of a PBX and connecting to an NTT line via the PBX, there is a problem that automatic dialing cannot be made.

[Means for solving problems]

FIG. 1 is a block diagram of the principle of the present invention.

In the data communication modem, dial signal generation circuit 1, NT
T line dial tone detection circuit 2. PBX dial tone detection circuit 3. A telephone number storage section 4° and a number storage section 5 for storing a dial number for connecting from a PBX extension to an NTT line are provided.

Therefore, when a dial tone is detected in the 33 N T T line dial tone detection circuit 2 after off-hunk, the dial signal of the telephone number stored in the telephone number storage section 4 is sent out from the dial signal generation circuit 1. do it like this.

Also, when the PBX dial tone detection circuit 3 detects a dial tone, the PBX stored in the number storage section 5
A dial signal of the dial number for connecting from the X extension to the NTT line is sent from the dial signal generation circuit 1, and then when a dial tone is detected by the NTT line dial tone detection circuit 2, the telephone number storage section The dial signal of the telephone number stored in 4 is sent out from the dial signal generating circuit 1.

[Effect]

According to the present invention, when connected to an NTT line or a PBX extension, the NTT line dial tone detection circuit 2 or the PBX
By detecting the dial tone in the dial tone detection circuit 3, it is possible to determine which one is connected, and from then on, automatically.
Send a dial signal of the other party's phone number or PB
The system sends a dialing signal for the dial number to connect from the X extension to the NTT line, and then sends a dialing signal for the other party's phone number, so all you have to do is enter the other party's phone number and you can connect to NTT. PB regardless of whether it is connected to the line
Regardless of whether you are connected to extension X, the modem's automatic calling function will automatically call the other party.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 2 is a block diagram of the main parts of a modem according to an embodiment of the present invention.
FIG. 3 is a flowchart of the program of the control section shown in FIG.

In FIG. 2, as in the past, the telephone number of the person to be called is input from an external device and stored in the telephone number storage section 4.
Further, assuming that the dial number for connecting from the PBX extension to the NTT line, for example O, is stored in the O number storage unit 5, and that the program shown in FIG. 3 is stored in the control unit 6, this program will be described below. The operation will be explained according to the following.

When off-hook and switch 7 is turned on, step 1
, and in Step 7 Step 2, it is already determined whether the line to which the modem is connected is an NTT line or a PBX extension line, and it is stored as 1 in the line specification determination method storage unit 8. see what

At first, it is not determined (it is 0, so in step 3,
The dial tone sent was 400H2 of the NTT line.
If the dial tone is detected by the NTT line dial tone detection circuit 2, in step 4, 0 is written in the line specification storage section 9, indicating that the line is connected to an NTT line.

Next, in step 5, the telephone number of the other party stored in the telephone number storage section 4 is read out, and a dial signal of this telephone number is sent from the dial signal generation circuit 1, and step 11
At this point, 1 is stored in the line specification determination method storage unit 8, indicating that the line specification has been determined.

However, if the NTT line dial tone detection circuit 2 does not detect a dial tone in step 3 and the PBX dial tone detection circuit 3 detects, for example, a PBX dial tone of an 800Hz intermittent signal in step 6, then step 7, 1 is stored in the line specification storage unit 9, indicating that the line is connected to the PBX extension.

Next, in step 8, the dial number 04:0 for connecting the PBX extension to the N T 1 line is read out from the number storage unit 5, and O is sent out from the dial signal generation circuit 1.

Next, in step 9, if a dial tone is detected by the NTT line dial tone detection circuit 2, in step 10, the telephone number of the other party stored in the telephone number storage section 4 is read out, and a dial signal of this telephone number is sent. is sent from the dial signal generation circuit 1, and in step 11, 1 is stored in the line specification determination method storage unit 8, indicating that the line specification has been determined.

When looking at the line specification determination method storage unit 8 in step 2, from the second use, it is determined whether the connected line is an NTT line or not.
It has been determined whether it is a BX extension and 1 is stored, so check whether the content of the line specification storage section 9 is 1 or O at step 12. If it is 0, it means that it is connected to an NTT line, so
At step 13, as in step 5, the telephone number of the other party stored in the telephone number storage section 4 is read out, and a dial signal for this telephone number is sent out from the dial signal generation circuit 1.

When looking at the contents of the line specification storage section 9 in step 12, 0
If so, step 1 as in step 8.9.10.
At step 4, the dial number 0 for connecting from the PBX extension to the NTT 1 line is read from the 0 number storage section 5, and O is sent from the dial signal generation circuit 1. Next, at step 15, the NTT line dial tone is detected. If the dial tone is detected in the circuit 2, the telephone number storage unit 4 is stored in step 16.
A telephone number of the other party stored in is read out, and a dial signal of this telephone number is sent out from the dial signal generating circuit 1.

Once you have entered the recipient's phone number like this, all you have to do is
Whether the modem is connected to an NTT line or a PBX extension, you will be able to automatically call the other party.

〔Effect of the invention〕

As explained in detail above, according to the present invention, once the telephone number of the other party is entered, the other party's telephone number will be automatically sent to the other party regardless of whether the modem is connected to an NTT line or a PBX extension. It has the effect of allowing you to call.

[Brief explanation of drawings]

Fig. 1 is a block diagram of the principle of the present invention, Fig. 2 is a professional diagram of the main parts of a modem according to an embodiment of the present invention, Fig. 3 is a flowchart of the program of the control section of Fig. 2, Fig. 4 1 is a block diagram of the main parts of a conventional modem. In the figure, l is a dial signal generation circuit, 2 is an NTT line dial tone detection circuit, 3 is a horizontal exchange dial tone detection circuit, 4 is a telephone number storage section, 5 is a number storage section, 0 number storage section, 6.6' is a control unit, 7 is a switch, 8 is a line specification discrimination method storage unit, and 9 is a line specification storage unit. Principles of the present invention/Program Section 1 Figure 7 J month's laughter B4 da J modem's de-audio block 5] M2 Man 4 layers

Claims (1)

[Claims] A data communication modem having an automatic dialing function, comprising: a dial signal generation circuit (1), an NTT line dial tone detection circuit (2), a private branch exchange dial tone detection circuit (3), a telephone number storage section ( 4) and a number storage section (5) for storing the dial number for connecting from the private branch exchange extension line to the NTT line, and when a dial tone is detected by the NTT line dial tone detection circuit (2) after off-hook, A dial signal for the telephone number stored in the telephone number storage section (4) is sent out from the dial signal generation circuit (1), and after off-hook, the dial tone is detected by the private branch exchange dial tone detection circuit (3). NT from the private branch exchange extension stored in the number storage unit (5).
A dial signal of the dial number for connecting to the T line is sent from the dial signal generation circuit (1), and then
When a dial tone is detected by the line dial tone detection circuit (2), the dial signal of the telephone number stored in the telephone number storage section (4) is transmitted to the dial signal generation circuit (
1) A dialing method that is characterized in that it transmits more signals.