JPH09149232A - Communication terminal equipment provided with abbreviation procedure communication function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the communication time by executing the abbreviation procedure even in lines without causing polarity inversion. SOLUTION: This terminal equipment is provided with a sender number detection means 1 detecting a sender number sent from an exchange and a sender number registration memory 3b registering a sender number capable of abbreviation procedure communication. When the sender number detected by the sender number detection means 1 is registered in the sender number registration memory 3b, the terminal equipment receives an incoming call and awaits a 1st reply signal (awaiting a signal from a sender without sending a function signal for a prescribed time after transmission of a station identification signal) and a 2nd reply signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication terminal device equipped with a shortened procedure communication function which can shorten communication time by effectively utilizing a calling telephone number notification service provided by a telephone exchange.

[0002]

2. Description of the Related Art Conventionally, as a communication terminal device having a shortened procedure communication function, a facsimile device which performs a handshake in a short time has been developed and is widely used. FIG. 7 is a time chart showing the handshake procedure of this facsimile apparatus. Further, FIG. 8 shows a time chart according to the normal procedure, and the shortening procedure will be described with reference to this.

On the transmitting side (source), when polarity inversion is detected by the incoming call on the receiving side, a non-standard device setting signal (NSS) and a transmitting station identification signal (NSS) are sent before the station identification signal (CED) is sent out. TSI), digital command signal (DCS)
A frame-structured reception command signal with a shortened preamble added in front of it, at a high speed (for example, 960
0 bps).

On the receiving side, the communication speed of the modem is set to a high speed in advance, and when the reception command signal is detected, the CED is omitted and the non-standard device signal (NSF), the called terminal identification signal (CSI), and the reception preparation are prepared. A function identification signal including a confirmation signal (MCFR) is transmitted. Here, the MCFR serves as both the digital identification signal (DIS) and the reception preparation confirmation signal (CFR).

When such a shortening procedure is successful, the transmitting side can start transmitting the image data (PIX), so that the signal transmission / reception is less than that in the normal procedure shown in FIG. , Conventionally, low speed (eg 300 bps)
It becomes possible to send and receive a procedure signal that could only be sent and received at high speed, and the communication time can be greatly shortened.

FIG. 7 shows a case where one page of image data is transmitted. The procedure end signal (EOP), message confirmation signal (MCF) and disconnection command signal (DCN) after image data transmission. Is also communicated in a shortened procedure. Also, other post messages than EOP, that is, multi-page signal (MPS) and message end signal (EO)
M) is also communicated in the shortened procedure, and the image data communication thereafter is performed.

[0007]

However, in the above-mentioned conventional communication terminal device having the shortened-procedure communication function, the transmitting side determines the command signal transmission timing by polarity reversal due to the incoming call from the receiving side. Therefore, shortened-procedure communication was not possible on extension telephone lines without polarity reversal or overseas lines.

The present invention has been made in view of the above circumstances, and provides a communication terminal apparatus having a shortened procedure communication function capable of executing a shortened procedure and shortening communication time even in a line without polarity reversal. With the goal.

[0009]

According to the present invention as set forth in claim 1 which is proposed to achieve the above object, a source number detecting means for detecting a source number transmitted from an exchange,
When the detected sender number is registered in the memory, a predetermined time after the call is received and the first response signal is sent is: It is characterized in that it waits for a signal from the transmission source without transmitting the second response signal.

In the communication terminal device of the present invention, the originating telephone number notification service causes the originating number detecting means to detect the originating number transmitted from the subscriber line exchange when calling from an outside line. FIG. 9 is a sequence diagram showing the basic operation of the calling telephone number notification service.

Symbols (a) to (i) in the figure are symbols assigned to respective operations, and the ID receiving terminal corresponds to the communication terminal device having the shortened procedure communication function of the present invention. When a call is made to a terminal for which a service contract has been made in advance, the subscriber line exchange reverses the polarity of the subscriber line, which is the line on the receiving terminal side (a), and sends an ID receiving terminal activation signal ( b). The terminal side closes the DC circuit inside the terminal when the sender number can be received (loop closed)
As a result, the primary response signal is transmitted (c).

In the exchange, when the primary response signal is judged from the DC resistance value, the transmission source number, which is a modem signal, is transmitted to the terminal side (d), and thereafter the reception is performed by opening the DC circuit (loop open) from the terminal side. After receiving the completion signal (e), the calling signal is transmitted (f). When an ID receiving terminal receives a ringing signal, it rings a ringing tone to prompt an incoming call. However, since the other party's telephone number is confirmed by receiving the calling party number and displaying it on the display in advance, make a call. You can take action according to the other party. When you respond to the ringing signal by picking up the handset, etc., the DC circuit is closed again (loop closed) and the secondary response signal is sent out (g), after which the polarity is repolarized so that you can talk. (H), (i).

In addition to the telephone number of the communication terminal device of the transmission source, the modem signal containing the transmission source number can also be notified of number information such as a dial-in number. If the notification cannot be sent, the reason why the sender number is not notified can be notified. By the way, the reason for non-notification of the sender number includes a call from a public telephone, a call when a non-notification is designated by an operation before inputting a telephone number, and a call from outside the service providing area.

In the calling telephone number notification service, the calling party number is set from the exchange by the operation described above.
In addition to the notification to the receiving terminal, there is also a method of sending out a modem signal containing the calling party number during the suspension period of the ringing signal. The number can be detected. In any case, in order to receive the outgoing telephone number notification service, the communication terminal device
It is necessary to have a function of performing the connection operation with the exchange described above, or to connect an adapter having this function.

According to the present invention of claim 2, in claim 1, when the detected sender number is not registered in the memory, or when the sender number cannot be detected by the sender number detecting means, the incoming call is received. After the first response signal is transmitted, the second response signal is transmitted and the signal from the transmission source is waited for. That is, when it is determined that the short procedure communication is not performed, the normal procedure communication is executed.

According to the present invention as set forth in claim 3, there is shown a specific procedure in the case where the communication terminal device is a facsimile device, and the detected source number is set so that the shortened procedure communication is performed at a predetermined communication speed. When registered in the memory,
It is characterized by waiting for a command signal from the sender without sending the function identification signal for a predetermined time after receiving a call and sending the station identification signal.

[0017]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram showing an example of the configuration of a communication terminal device having a shortened procedure communication function according to the present invention. Here, the facsimile device F
Is shown. In the figure, reference numeral 1 is a line control for performing connection and switching control with respect to a telephone line L, providing a communication modem 1a to execute a facsimile communication procedure, and detecting a calling signal or a source number sent from an exchange. Unit (source number detecting means), 2 is a signal processing unit configured by a CPU or the like for controlling each unit, 3 is a ROM 3a, and a RAM 3b having a source number registration memory for registering a source number capable of shortened procedure communication. A storage unit composed of and 4, an operation unit composed of a numeric keypad and the like, 5 a display unit composed of a liquid crystal screen and the like, 6 a print output unit, and 7 an image reading unit.

In addition to the communication modem 1a, the line control unit 1 receives a line switching unit 1b (CML relay) and a source number. Therefore, a polarity reversal detection circuit 1c for detecting polarity reversal and a transformer 1d are provided before that. The communication modem 1a includes a protocol signal generation circuit and a protocol signal detection circuit, which has a function of detecting a call signal from the telephone line L and a function of detecting an ID reception terminal activation signal. It includes a circuit, a modem signal of a transmission source number, a modulation / demodulation circuit for modulating and demodulating image data to be transmitted and received.

The basic operation of the facsimile apparatus F will be described below with reference to FIG. The facsimile device F has a function of using the calling telephone number notification service by the telephone exchange office. When the polarity inversion is detected by the polarity inversion detection circuit 1c according to the operation described with reference to FIG. The incoming signal reception terminal activation signal is detected by the calling signal detection circuit 1e, the modem signal of the transmission source number is demodulated by the communication modem 1a, and the signal processing unit 2 discriminates information such as the transmission source number.

The signal processing unit 2 includes a sender number registration memory 3
When the detected caller number is registered in this memory with reference to b, the ringing signal detection circuit 1e thereafter detects the ringing signal and automatically receives the ringing signal. For a predetermined time (for example, 3 seconds) after transmitting the station identification signal (CED), the function identification signal (NSF / CSI / DIS) that is the second response signal is not transmitted, and the transmission side (source) transmits the signal. Command signal (NSS / TSI
/ DCS) and then the function identification signal (NSF / CS
I / MCFR). Then, thereafter, the image data (PIX) can be received. This first response signal does not have to be normal 2100 Hz for 3 seconds and may be shortened to about 1 second. Also, different frequencies may be used.

As described above, in the present invention, the transmitting side is the CED.
Since the reception command signal can be sent to execute the shortening procedure at the timing of detecting, it is not necessary to judge the start of the shortening procedure by polarity inversion as in the conventional case. The signal transmitted / received here is transmitted at high speed (for example, 9600 bps) together with the shortened preamble added before each signal, as in the conventional shortened procedure communication. It should be noted that each of the signals described above will be transmitted from the receiving side in order to distinguish them from the signals in the normal procedure.
"D" is "SCED", "NSF / CSI / MCFR" is "SCFR", and "NSS / TSI /" is sent from the transmission side.
DCS "will be referred to as" SDCS ".

The case where the shortened procedure communication is executed by registering the sender number registration memory 3b has been described above. However, whether the detected sender number is not registered in the memory or the reason why the sender number is not notified is detected. If the caller number cannot be detected due to, for example, CED and NSF / CSI / DIS are sent out after the incoming call in order to execute the normal procedure, and a signal for NSS / TSI / DCS from the transmission side is awaited ( (See FIG. 8).

Next, the basic operation of the facsimile apparatus F will be described with reference to the flow chart (steps 100 to 1) shown in FIG.
13) will be described. After detecting the sender number, the sender number registration memory 3b is referred to and it is determined whether the short-procedure communication (steps 102 to 109) or the normal procedure communication (steps 110 to 113) is to be executed.

In the shortening procedure, if the SDCS cannot be detected within a predetermined time (for example, 3 seconds) after sending the SCED, communication is performed by the normal procedure (steps 104 to 106). In the normal procedure, from the next communication, the NSF sets information such as "accepted procedure communication possible" in the NSF so that the transmission side (source) also executes the shortened procedure communication and sends it. Also, for the facsimile device F on the receiving side, the originator number and the communication speed corresponding thereto are also set in the originator number registration memory 3b so that the shortened procedure communication can be performed from the next time.

The case where the communication terminal device according to the present invention is used as a receiver has been described above. Next, the case where the communication terminal device is used as a transmitter will be described with reference to the flowcharts of FIGS. 4 and 5 (steps 200 to 224). Will be explained. As shown here, the sender number registration memory 3b is also referred to at the time of transmission, and the short procedure communication (steps 201 to 212) is executed or the normal procedure communication (FIG. 5: steps 213 to 22).
4) Determine whether to execute.

If the number to be called is registered in the memory, the shortening procedure is performed. If SCED is detected within a predetermined time (for example, within 60 seconds) after the call is made, SDCS is transmitted, but if not detected, redial is executed at a predetermined interval (steps 201 to 206). Of course, even when the other party is busy, the process is switched to redial. SDC
After sending S, SC within a predetermined time (for example, within 35 seconds)
If FR is detected, transmission of image data is started, but if not detected, the line is disconnected as an abnormal end, and when DIS is detected, the procedure proceeds to the normal procedure (step 20).
7-211).

On the other hand, in the normal procedure (FIG. 5), CED and NSF / CSI / DIS are detected in the same manner as the shortening procedure (steps 213 to 219). Here, if the NSF is set with the information of "shortened procedure communication possible", the sender number registration memory 3b is required to execute the shortened procedure from the next communication.
The dialed number called to is registered (step 220,
221). Then, after the facsimile transmission is completed by the normal procedure, the communication speed is registered in association with the dial number (steps 222 to 224).

Next, the structure of the sender number registration memory 3b will be described with reference to FIG. Sender number registration memory 3b
Can use the memory for one-touch dial or speed dial, and here, the sender number that can correspond to the one-touch key and can perform the shortened procedure communication (when used as a transmitter, it is called as the conventional number is,
Shortened procedure It is registered together with communication enable / disable information and communication speed.

As the communication speed, a value for setting the SDCS for transmission and for setting the communication modem 1a is registered. In this case, the final communication speed in the case of fallback may be rewritably set and registered in addition to the speed which is set to DIS or the like and indicates the maximum capacity to be transmitted. Even between terminals that are not always in a good line condition, it is not necessary to perform useless handshake procedures, and quick communication is possible.

[0030]

As can be understood from the above description, according to the communication terminal device having the shortened procedure communication function of the first and third aspects of the present invention, the calling telephone number notification service is effectively used. When it is used as a receiver, it is possible to judge the execution of the shortened procedure communication by the sender number.
On the other hand, when used as a transmitter, the command signal (SDCS) can be sent out by detecting the first response signal (station identification signal: SCED), so that the shortened procedure communication can be performed even on an extension telephone line without polarity reversal or an overseas line. Can be executed.

Further, according to the communication terminal device having the short-procedure communication function according to the second aspect, even if the communication terminal device is not registered for the short-procedure communication or the sender number cannot be detected, the normal procedure is performed. It is possible to communicate, and at this time, if it is registered to automatically execute the shortened procedure communication, it becomes possible to perform quick communication with a shortened communication time from the next communication.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of a basic configuration of a communication terminal device (facsimile device) having a shortened procedure communication function according to the present invention.

FIG. 2 is a time chart showing an example of a basic operation of the communication terminal device shown in FIG.

3 is a flowchart showing an example of a basic operation of the communication terminal device (receiver) shown in FIG.

FIG. 4 is a flowchart (part 1) showing an example of a basic operation of the communication terminal device (transmitter) shown in FIG. 1.

5 is a flowchart (No. 2) showing an example of a basic operation of the communication terminal apparatus (transmitter) shown in FIG.

FIG. 6 is a memory configuration diagram showing an example of a sender number registration memory.

FIG. 7 is a time chart showing an example of a basic operation of a communication terminal device having a conventional shortened procedure communication function.

FIG. 8 is a time chart showing an example of a basic operation (normal procedure) of a conventional communication terminal device.

FIG. 9 is a sequence diagram showing a basic operation of a calling telephone number notification service.

[Explanation of Codes] F ... Communication terminal device (facsimile device) having a shortened procedure communication function according to the present invention 1 ... Line control unit (source number detecting means) 1a ... Communication modem 1c ...・ Polarity inversion detection circuit 1e ... Call signal detection circuit 2 ... Signal processing unit 3 ... Storage unit 3b ... RAM (sender number registration memory) L ... Telephone line

Claims (3)

[Claims] 1. A transmission source number detecting means for detecting a transmission source number sent from an exchange and a transmission source number registration memory for registering a transmission source number capable of performing a shortened procedure communication. When the originator number is registered in the memory, a short time is characterized by waiting for the signal from the originator without sending the second response signal for a predetermined time after receiving the call and sending the first response signal. A communication terminal device having a communication function. 2. When the sender number detected by the detecting means is not registered in the memory, or when the sender number cannot be detected by the detecting means,
2. The communication terminal apparatus having the short-procedure communication function according to claim 1, wherein after receiving the incoming call and transmitting the first response signal, the second response signal is transmitted to wait for the signal from the transmission source. 3. A transmission source number detecting means for detecting a transmission source number transmitted from an exchange, and a transmission source number registration memory for registering a transmission source number capable of shortening procedure communication at a predetermined communication speed. When the source number detected by the means is registered in the memory, the command signal from the source is waited for a predetermined time after the incoming call and the station identification signal is transmitted, without transmitting the function identification signal. A communication terminal device having a communication function for shortening procedure.