JPH04144347A - Speech/communication automatic changeover system in facsimile equipment incorporated automatic answering telephone function - Google Patents

Abstract

PURPOSE:To avoid useless recording and to effectively utilize a limited recording number of items and time by replying a call automatically at the arrival of a call, applying facsimile reception when a CNG signal from a caller side is detected and activating an automatic answering function when a signal other than the CNG signal is detected. CONSTITUTION:The facsimile equipment replies a call at the arrival of the call automatically and enters a tone detection state and starts a timer. The reception of the facsimile equipment is implemented when a CNG signal is detected. When a voice signal is detected, a prescribed announcement is started and when any tone is detected within a prescribed time, an announcement such as 'please say something when you would like to talk to us' to confirm whether or not a caller makes a phone call is sent.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention provides a facsimile machine with a built-in answering machine function that automatically determines whether the calling terminal is a facsimile machine or a person making the call, and switches to the next operation. Concerning automatic call/communication switching system.

(Prior Art) The development of facsimile communication has been remarkable in recent years, and various proposals have been made regarding connection methods of facsimile devices to telephone lines.

Various regulations regarding signals used for communication by the facsimile machine are stipulated in CCTTT Recommendation T30 and the like. According to this recommendation, a CNG signal indicating that the calling party is a facsimile is specified, and the use of this signal is mandatory for automatic calling terminals and optional for manual devices. Furthermore, a CED signal indicating that the called party is a non-voice terminal is defined.

In automatic facsimile communication, the calling party sends the above CNG signal to the called party, and the called party sends the above CE signal to the calling party.
I) Send a signal. However, depending on the two models, CN
Some devices cannot send G signals. Such models remain silent unless a CED signal binary code control sequence is received from the called party.

In addition, when making a 1-down call, after confirming the 2-caller or other party, the user presses the start button to start communication. In this case, no CNG signal is sent during one call.

The operation of the incoming call example is summarized as follows. When the calling terminal is a fax with CNG, a fax without CNG, and a call is made by an operator, the tones detected on the called terminal are a CNG signal, silence, and voice/silence, respectively;
The actions on the receiving side are that the first two parties receive the fax and make a direct call. ,
The receiver rings and the answering machine is recorded.

FIG. 3 is a diagram for explaining a switching method of a conventional telephone answering machine having an answering machine function.

When an incoming call is received while the answering machine mode is set (step 21), after automatic answering (step 22),
A CNG signal is detected (step 23).

If a CNG signal is detected (step 24), it can be specified that the calling terminal is a fax, so a CED signal is sent and a fax reception operation is started (step 25).

If no CNG signal is detected (step 26), the answering machine function is activated and begins sending and recording announcements (steps 27 and 28).

After the recording starts, it is detected whether there is continuous silence for 5 seconds (step 29).

If there is no silence, recording continues (steps 33 and 34).

If a silent state is detected (step 30), recording is stopped, a CED signal is sent, and a fax reception operation is performed (steps 31 and 32).

(Problem to be Solved by the Invention) In the facsimile machine having the above-mentioned answering machine function, C.
If an NG signal is not detected, the answering function immediately starts operating, so even if the calling party is a fax without CNG, there is a problem in that recording will start.

Furthermore, since the recording side is limited in the number of recordings or the recording time, there is a drawback that recording silence is extremely inefficient.

An object of the present invention is to solve the above-mentioned drawbacks, and to provide a facsimile machine with a built-in answering machine function, when the calling party
Even in the case of a fax without fax, each time you receive a fax without activating the answering machine function,
To provide an automatic call/communication switching system that avoids wasteful recording and makes effective use of the limited number of recordings and time.

(Means for IW determination of the problem) In order to achieve the above object, the call/communication automatic switching method in the facsimile machine with built-in answering machine function according to the present invention is such that when the facsimile machine with built-in answering machine function is set to the answering machine mode, If there is an incoming call, the machine automatically responds, enters the tone detection state and starts a timer, and when it detects a CNG signal from the calling party, it starts receiving faxes.
When a signal other than the CNG signal is detected, the answering function is activated, and when no tone is detected within a certain period of time from the timer start, a predetermined announcement is sent to the calling party, and then the tone detection state is resumed. When a signal other than the above-mentioned CNG signal is detected, recording is started, and when the tone detection state is resumed and the tone cannot be detected within a certain period of time, the timer is started.
It is configured to transmit an ED signal and perform a facsimile reception operation.

(Example) Hereinafter, the present invention will be explained in more detail with reference to the drawings.

FIG. 1 is a relay system diagram of a system to which a call/communication automatic switching system of a facsimile machine with a built-in answering machine function according to the present invention is applied.

When the facsimile device I7 with built-in answering machine function is set to the answering machine mode and receives a call from the calling terminal 15, the answering machine responds and the exchange 9 forms a communication path between the two terminals.

FIG. 2 is a diagram showing an embodiment of an automatic call/communication switching system of a facsimile machine with a built-in answering machine function according to the present invention.

When there is an incoming call from a calling terminal (step 1), an automatic response is made, and the timer is started at the same time as the detection state of 1 to - is started (steps 2 and 3).

If a CNG signal υ is detected, it can be determined that the calling terminal is a fax, so a fax reception operation is performed (step 4.5).

When voice (energy on the line other than the CNG signal) is detected (step 6), the calling party seems to be making a call from a person, so it sends out a predetermined announcement (step 7).
), activate the answering machine function and start recording (step 8).

When the timer is started and no 1-tone is detected within a certain period of time (step 9), an announcement is made to confirm whether the calling party is trying to make a call, e.g.
If it's a phone call, please say something. ” (
Step 10).

After sending out this announcement, the system enters the l/-n detection state and starts the timer (steer knob 11).

As a result, if audio is detected, return to step 7.
After sending out the announcement, start recording.

If no tone is detected for a certain period of time from the timer start despite tone detection again, it is assumed that the calling party is not intending to make a call, and therefore sends a CED signal and performs a fax reception operation (step 13). .14).

(Effects of the Invention) As described above, according to the present invention, even if there is an incoming call with the answering machine set and the calling party is a facsimile machine without CNG, the answering machine is not activated. Fax reception operation can be started.

Therefore, there is an effect that unnecessary recording can be avoided and the limited number of recordings and time can be used effectively.

[Brief explanation of drawings]

FIG. 1 is a relay system diagram of a system to which the automatic call/communication switching method of a facsimile machine with a built-in answering machine function according to the present invention is applied, and FIG. 2 shows the automatic call/communication switching system of a facsimile machine with a built-in answering machine function according to the present invention. FIG. 3, which is a diagram showing an embodiment, is a diagram for explaining a switching system of a conventional facsimile machine having an answering machine function. 15... Calling side terminal 16... Exchange 17... Facsimile device with built-in answering machine function 18.
...Telephone line patent applicant Daini Denden Co., Ltd. agent Patent attorney Hisasu Inoro

Claims (1)

[Claims] When a facsimile machine with a built-in answering machine is set to answering machine mode and an incoming call is received, the machine automatically answers the call, enters a tone detection state, and starts a timer.
When a CNG signal from the calling party is detected, a fax reception operation is performed, when a signal other than the CNG signal is detected, the answering function is activated, and when no tone is detected within a certain period of time from the timer start. After sending a predetermined announcement to the calling party, the tone detection state is entered again and a timer is started, and as a result, the C
It is characterized in that it starts recording when it detects a signal other than an NG signal, and when it enters the tone detection state again and cannot detect a tone within a certain period of time, it transmits a CED signal and performs a fax reception operation. An automatic call/communication switching method for facsimile machines with a built-in answering machine function.