JPH02105656A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To automatically set a call issuing system by recognizing the call issuing system fitted in the specification of an exchange automatically connected, and storing it until the power source of an equipment is disconnected. CONSTITUTION:Two automatic call issuing functions of DTMF(Dual Tone Multi Frequency) and DP(Dialing Pulse) are provided, and a control circuit 12 inputs a key number analyzed first to a DTMF call issuing circuit 5 as a call issuing number code signal (k), and also, turns on a DTMF call issuing instruction signal (b). And the the signal (b) is turned off after constant time. Therefore, the control circuit 12, when detecting the fact that a dial tone signal (f) is still turned on, performs an operation to issue a call to the DP. Next, the turning on and off of the DP call issuing instruction (a) are performed for the number of times equivalent to a read out telephone number to a DP call issuing circuit 4. The control circuit 12 stores information representing that the call issuing system hereafter is a DP system on a memory 11 via a data bus (g). Hereinafter, facsimile communication by a modem 9 can be started.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a facsimile machine, and particularly to a facsimile machine using DTMF (D
The present invention relates to a facsimile machine having automatic calling functions of both the ualTone HultiFrequency (HultiFrequency) method and the D P (Dalina Pulse) method.

This type of facsimile machine is equipped with a changeover switch that selects between the DTMF calling method and the DP calling method, and the setting of this switch uniquely selects one of the two methods. ing.

In the conventional facsimile machine mentioned above, DTMF
The switch allows you to uniquely select whether to make a call using the DP method or the DP method, so when installing or relocating a facsimile, the installer or operator can There is a drawback in that it is complicated to perform a calling test to set the changeover switch according to the specifications of the AC FAa.

Therefore, the present invention was made to solve the drawbacks of the conventional ones, and its purpose is to automatically create a calling method that matches the usage of the connected exchange. The purpose of the present invention is to provide a facsimile device that can be set up automatically.

According to the present invention, there is provided a facsimile machine having automatic calling functions of both the DTMF system and the DP system, in which the facsimile machine is equipped with the automatic calling function of both the DTMF system and the DP system, in response to the first transmission instruction from an operator after the device is powered on. means for initiating a calling operation by;
a detecting means for detecting whether or not a dial tone is sent from the exchange after the call is made; a means for switching the calling method to the DP method and starting a calling operation when the dial tone is detected by the detecting means; The present invention provides a facsimile apparatus characterized in that it includes a storage means for storing a successful calling method when a call is successful, and is configured to thereafter operate according to the stored calling method.

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a block configuration of an embodiment of the present invention, and FIGS. 2.3 are operational flowcharts of the blocks in FIG. 1. First, with reference to FIG. 1.2, the first calling operation after the device is powered on will be described. When the device power is turned on, the DC voltage VDD applied to the power-on reset circuit 15 changes from OV to a certain DC voltage (for example, +5V). Due to this change, the power-on reset circuit 15 outputs a power-on reset signal j to the control circuit 12. As a result, the control circuit 12 is set to the initial state, and the facsimile machine waits for the operator to press the numeric keypad 14 for automatic calling.

When the operator presses a key on the numeric keypad 14 to make an automatic call, information on which key was pressed is displayed on the numeric keypad 14.
It is applied to the control circuit 12 as a numeric keypad information code signal i. The control circuit 12 analyzes the input numeric keypad information code and stores the pressed key number in the buffer memory 13 via the data bus h.

Next, the control circuit 12 turns on the relay RL1 control signal C. As a result, the zero-order control circuit 12, which operates the contact 1 of the relay RL1, turns on the control signal e of the relay RL3.

This causes contact 3 of relay RL3 to operate.

The control circuit 12 inputs the previously analyzed key number as a calling number code signal to the DTMF calling circuit 5, and
Turn on the TMF call command signal.

After a certain period of time, the DTMF call command signal is turned off.

The DTMF calling circuit 5 outputs a DTMF signal corresponding to the code of the calling number code signal inputted from the control circuit 12. This DTMF signal is transferred to the transformer 16. relay RL
2 contacts 2. The signal is sent to the telephone line through the contact 11 line connection terminal of relay RL1.

Next, when the operator manually inputs the second digit number from the numeric keypad 14, the DTMF calling circuit 5 sends out a DTMF signal corresponding to the key number to the telephone line in the same manner as described above. If the operator does not press any keys on the numeric keypad 14 for a certain period of time (for example, 7 seconds), the control circuit 12 determines that the operator has finished pressing the keys, and the dial tone detection circuit 1
Check whether the dial tone detection signal f, which is the output signal of o, is on.

Here, the dial tone detection signal indicates on if a dial tone has arrived from the telephone line, and indicates off if no dial tone has arrived.

If this dial tone detection signal f indicates OFF, this indicates that the DTMF dial signal issued by the DTMF calling circuit 5 has been identified by the connected exchange; in other words, in this case, The DTMF calling method is
Indicates that it meets the specifications of the connected exchange.

Control circuit 12 recognizes that the calling operation is completed and turns off relay RL3 control signal e, which is the output signal to relay RL3. As a result, the contact 3 of the relay RL3 stores information to the recovered quaternary memory 11 via the data bus g that the subsequent calling method is the DTMF method.

After this, facsimile communication using the modem 9 is started.

On the other hand, the operation when the dial tone detection signal f still indicates ON will be described. In this case, it means that the previously issued DTMF calling signal was ignored by the connected exchange, that is, the exchange specification is the DP specification. Therefore, when the control circuit 12 detects that the dial tone detection signal f is still on, it performs the following operations to initiate a DP call. Turn on. This causes contact 2 of relay RL2 to operate.

The control circuit 12 uses the puff memory 1 at the time of the previous DTMF call.
One digit of the telephone number to be called stored in 3 is read out via the data bus h.Next, the DP call command signal a is sent to the DP calling circuit 4 a number of times corresponding to the read telephone number.
Turn off and on.

As a result, the DP call signal is sent to the telephone line through contact 1 of relay RL1 and the line connection terminal.

Similarly, the control circuit 12 reads each digit of all the telephone numbers stored in the buffer memory 13 and makes a DP call. When the call is completed, the control circuit 12 turns off the relay RL2 control signal d. As a result, contact 2 of relay RL2 is restored.

The control circuit 12 stores information in the memory 11 via the data bus g that the subsequent calling format is the DP method. After this, facsimile communication using the modem 9 is started.

The operation when the operator manually presses a key on the numeric keypad 14 to make an automatic call after the first call after the device is powered on as described above is described below with reference to FIG. do.

When the control circuit 12 recognizes that the operator has pressed the numeric keypad 14 by inputting the numeric keypad information code signal i, the control circuit 12 transfers the call format information stored in the memory 11 to the data bus g.
input via , determine whether it is DTMF method or DP method,
Make a call according to each call format. in this case,
Even if a call is made using the DTMF method, the on/off status of the dial tone detection signal f is not checked after the call is made.

Generally, the control circuit 12 is often composed of a microcomputer, and the operation flow in that case is shown in FIGS. 2 and 3.

The reason why the DTMF method is used as the first calling method after the power is turned on is that the calling signal using the DTMF method has less influence on the exchange. If the exchange is a DTMF system and the facsimile machine first adopts the DP system calling operation, there is a risk that the DP system call signal will have a negative effect on the DTMF system, causing the exchange to malfunction. This was taken into consideration.

1 As explained above, according to the present invention, after the device is powered on,
At the time of the first automatic call, a means for automatically recognizing a calling method that conforms to the specifications of the connected exchange;
By providing the facsimile with a means to memorize the calling method that meets the specifications of the exchange until power is removed from the equipment, the installer or operator can test the calling method when installing or relocating the facsimile. This has the effect of eliminating the hassle of confirming the specifications of the connected exchange.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a flowchart showing the first calling operation after the device is powered on, and FIG.
The figure is a flowchart showing the second and subsequent calling operations after the device is powered on. Explanation of symbols of main parts 4...DP calling circuit 5...DTMF calling circuit 10...Dial tone detection circuit 11...
...Memory 12...Control circuit 14...Numeric keypad

Claims (1)

[Claims] (1) DTMF (DualTone MultiFrame)
(Dialing Pulse) method and DP (Dialing Pulse) method
facsimile apparatus having an automatic calling function of both of the DTMF and DTMF systems, the facsimile apparatus comprising means for starting a calling operation according to the DTMF system in response to the first transmission instruction from an operator after the device is powered on; A detection means for detecting whether or not a dial tone is sent from the post-exchange;
The device includes means for switching to the P method and starting the calling operation, and storage means for storing the successful calling method when the calling is successful, and from then on the operation is performed according to the stored calling method. A facsimile machine with special features.