JP2000236399A - Communication terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication terminal such as a facsimile equipment provided with a display function of a caller telephone number service that clearly informs an operator about the arrival of a facsimile call from a facsimile communication network. SOLUTION: The communication terminal is a facsimile equipment 20 that stores a caller number coming from an exchange of a common carrier to an incoming call history table 7a in a RAM 7, and when an incoming call comes from a facsimile communication network, a main control section 1 stores information denoting its incoming call in the incoming call history table 7a. Furthermore, the main control section 1 stores information set in a transmission terminal identification signal from the facsimile communication network to the incoming call history table 7a together with the information denoting the incoming call from the facsimile communication network. Then a display section 4 displays contents stored in the incoming call history table 7a or an image recording section 3 prints out the contents on paper to inform an operator about the contents.

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to a communication terminal device such as a facsimile device having a function of receiving a facsimile call from a facsimile communication network provided by a telecommunications carrier.

[0002]

2. Description of the Related Art At present, telecommunications carriers such as NTT provide services of a facsimile communication network which is inexpensive when the distance is relatively long as compared with the case where facsimile transmission is performed via a telephone line. I have. In this facsimile communication network, facsimile image data transmitted from a registered subscriber to a destination is temporarily stored in a storage device of the facsimile communication network, and then transmitted from the facsimile communication network to the destination via a telephone line. It is configured.

In recent years, a caller telephone number notification service for notifying a caller telephone number from an exchange of a telecommunications carrier such as NTT to a communication terminal device such as a receiver telephone or a facsimile has been put into practical use. I have. In this calling telephone number notification service, a communication procedure is performed between the exchange and the communication terminal device on the receiving side as follows. That is, when a dial call is made on the calling side, first, the polarity of the current flowing on the telephone line in the exchange is reversed.
Next, a 16 Hz ID reception terminal activation signal is transmitted from the exchange to the communication terminal device. The ID receiving terminal activation signal is a signal specially prepared for the calling telephone number notification service, and is set to 0.
Make rate of 50 that is turned on and off every 5 seconds
% Is a 16 Hz signal.

[0004] The communication terminal device on the receiving side receives the ID from the exchange.
When the receiving terminal activation signal is detected, the telephone line is closed to form a DC loop with the exchange. When the formation of this DC loop is detected by the exchange as a primary response signal, the telephone number data from the exchange is transmitted to the communication terminal device by the FSK.
(Frequency shift keying) signal. When receiving the telephone number data from the exchange, the communication terminal device once releases the telephone line to release the DC loop between the communication terminal and the exchange. When the opening of the DC loop is detected by the exchange as a reception completion signal, a general 16-Hz calling signal is transmitted from the exchange to the communication terminal device. This ringing signal is a 16 Hz signal having a make-up rate of about 66% intermittently transmitted at intervals of one second at intervals of two seconds off time. Are different. The exchange transmits a ringback tone to the calling side while transmitting the call signal to the communication terminal device.

If the communication terminal is a facsimile, the facsimile detects a call signal from the exchange and closes the telephone line again to form a DC loop with the exchange. On the other hand, when the communication terminal is a telephone, the telephone is ringed by a calling signal from the exchange. Then, when the user off-hooks the handset of the exchange based on this ringing, the telephone line is closed and a DC loop is formed with the exchange. When the formation of this DC loop is detected by the exchange as a secondary response signal, after the polarity of the inverted telephone line is restored at the exchange, the facsimile is transmitted between the originating and terminating communication terminal devices. Communication or telephone conversation is performed.

[0006]

However, in a facsimile apparatus having a display function of a calling telephone number notification service, caller telephone number information is stored in an incoming call history memory. However, in a facsimile communication via a facsimile communication network, a calling telephone is used. Since the data of the number information does not come, there is a problem that the caller telephone number information cannot be stored in the incoming call history memory.

An object of the present invention is to solve the above-mentioned problems, and to clarify the facsimile reception from a facsimile communication network in a communication terminal device such as a facsimile device having a display function of a calling telephone number notification service. A communication terminal device is provided.

[0008]

According to a first aspect of the present invention, there is provided a communication terminal device for storing a caller number arriving from an exchange of a telecommunications carrier in a history memory. When an incoming call is received, a control means for storing information indicating that fact in the history memory is provided.

The communication terminal device according to a second aspect of the present invention is the communication terminal device according to the first aspect, wherein the control means includes:
In addition to the information indicating an incoming call from the facsimile communication network, information stored in a transmission terminal identification signal from the facsimile communication network is stored in the history memory.

[0010] Furthermore, the communication terminal device according to claim 3 is
The communication terminal device according to claim 1, further comprising:
A notifying means for notifying the contents of the incoming call history memory is provided.

[0011]

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

<Embodiment> FIG. 1 is a block diagram showing a configuration of a facsimile apparatus 20 having an incoming call function from a facsimile communication network according to an embodiment of the present invention.
The facsimile apparatus 20 of this embodiment is, for example, an NTT
The facsimile machine 20 stores the caller telephone number arriving from the exchange of the telecommunications carrier in the incoming call history table 7a in the RAM 7 by the calling telephone number notification service provided by the telecommunications carrier. , Information indicating that the call has been received from the facsimile communication network,
In addition, the information stored in the transmission terminal identification signal (TSI) from the facsimile communication network provided by the telecommunications carrier is stored in the incoming call history table 7a (step S1 in FIG. 2).
1 and S12). Then, the contents stored in the incoming call history table 7a are displayed on the display unit 4 or printed on paper using the image recording unit 3 to notify the operator.

Referring to FIG. 1, a facsimile machine 20 comprises:
It has a facsimile communication function of the conventional G3 system and the like, and also has a function of receiving a call from a facsimile communication network. The main control unit 1 is specifically composed of a CPU,
It is connected to the following hardware units via the bus 13 to control them and execute various software functions to be described later. The image reading unit 2 reads an original with a scanner using a CCD or the like, and outputs dot image data converted to binary black and white. The image recording unit 3 is a printer device of an electrophotographic system or the like, and prints out and records image data received from another facsimile device by facsimile communication as a hard copy. The display unit 4 is a display device such as a liquid crystal display (LCD) or a CRT display, and displays an operation state of the facsimile machine 20, and displays image data of a document to be transmitted and received image data. .

The operation unit 5 includes character keys, dial numeric keys, and dial keys necessary for operating the facsimile machine 20.
It has speed dial keys, one-touch dial keys, and various function keys. In addition, by making the above-mentioned display unit 4 a touch panel type, this operation unit 5
A part or all of the various keys may be substituted.

The ROM 6 stores in advance various software programs necessary for the operation of the facsimile machine 20 and executed by the main control unit 1, wherein the programs are stored in at least the destinations shown in FIGS. Includes processing program. The RAM 7 is composed of an SRAM, a flash memory, or the like, and is used as a working area of the main control unit 1 and stores temporary data generated when a program is executed. Here, the RAM 7 includes an incoming call history table 7a described in detail later. When a flash memory is used as the RAM 7, even if the power is cut off due to a power failure, a movement of the apparatus, or the like, the contents of the data are not lost. The image memory 8 is composed of a DRAM or the like,
Image data to be transmitted or received image data is stored. Note that the RAM 7 and the image memory 8 may be constituted by a hard disk memory.

The fax modem 10 is connected to a public telephone line L
And demodulates the data of the outgoing telephone number information received as the FSK signal and outputs it to the main control unit 1. NCU (Network control circuit: Networ
k Control Unit) 11 is a hardware circuit that performs closing and opening operations such as a DC loop of the analog public telephone line L and has an automatic dial function. Connecting.
Here, the NCU 11 detects an ID receiving terminal activation signal and a normal telephone call signal in the outgoing telephone number notification service, and transmits a primary response signal and a secondary response signal in the outgoing telephone number notification service as necessary. can do. The NCU 11 is connected to a predetermined terminal adapter and a DSU (Digital Service Unit: Digital Service).
Unit) may be connected to a digital line of the baseband transmission system (for example, an ISDN line).

The facsimile apparatus 20 of the present embodiment configured as described above has a function of receiving a call from a facsimile communication network in addition to a facsimile communication function of a normal G3 system or the like. In the facsimile communication function, dot image data read by the image reading unit 2 is MH, MR, MM defined in the facsimile communication standard.
After being encoded by software according to an encoding method such as R, and then transmitted to the other party's facsimile machine,
Conversely, the encoded data received from the other party's facsimile machine is also decoded into image data by software and output from the image recording unit 3 as a hard copy. The image memory 8 stores the image data as needed, and outputs the stored image data as needed.

FIG. 2 is a diagram showing an example of the incoming call history table 7a in the RAM 7 of FIG. As is clear from FIG. 2, the incoming call history table 7a stores a caller number, a non-notification reason, and an incoming time for each incoming call. Here, in the case of a facsimile call from a public telephone network exchange, caller telephone number information by the caller telephone number notification service is stored as caller number data in the incoming call history table 7a, while the facsimile communication network In the case of a facsimile incoming call from the facsimile communication network, the caller telephone number information in the TSI signal from the facsimile communication network is received and stored as caller number data in the incoming call history table 7a. Is stored in the incoming call history table 7a as non-notification reason data. The reasons for non-notification are
There is a “public telephone”, for example, “out of display area” which is an incoming call from overseas. The contents of the incoming call history table 7a are displayed on the display unit 4 when the operator gives an instruction to display the incoming call history table using the operation unit 5, and the operator uses the operation unit 5 to display the contents. When an instruction to print the incoming call history table is issued, the image is printed on paper using the image recording unit 3 and notified to the operator.

FIGS. 3 and 4 are flowcharts showing the incoming call processing executed by the main control unit 1 of the facsimile machine 10 of FIG. In FIG. 3, first, step S
It is determined whether a tone of 1300 Hz (when the telecommunications carrier is, for example, NTT) indicating that there is an incoming call from the facsimile communication network is detected in 1, and YES is determined.
If it is, it is determined that there is an incoming call from the facsimile communication network, and in step S11, the incoming call from the facsimile communication network is recorded in the non-notification reason column of the incoming call history table 7a. Next, in step S12, facsimile including exchange and training of a predetermined signal according to a facsimile communication protocol, including a process of receiving a TSI signal and recording caller ID information in a caller ID of the call reception history table 7a. After executing the incoming call process, the process proceeds to step S22 in FIG.

If NO in step S1, it is determined whether or not a 16 Hz incoming signal is detected in step S2. If YES, the process proceeds to step S3, while if NO, the process returns to step S1. Next, in step S3, it is determined whether the incoming signal of 16 Hz has a make-up rate of 50%, and if YES, the process proceeds to step S4.
If NO, the process returns to step S1. That is, when YES is determined in both steps S2 and S3, it is determined that the call has been received by the calling telephone number notification service provided by the telecommunications carrier, and in step S4 a primary response signal is transmitted by forming a DC loop in a public telephone line. Then, in step S5, the caller telephone number information from the exchange is received and stored in a temporary memory in the RAM 7, and in step S6, the received caller telephone number information is recorded in the caller number of the incoming call history table 7a. And step S
In step 7, the reception completion response is transmitted by cutting the DC loop of the public telephone line L. In step S8, it is determined whether or not 10 seconds have elapsed from the reception completion response.
If so, it is determined in step S9 whether a ringing tone has been detected. If YES in step S8, the process returns to step S1, and NO in step S9.
Is satisfied, the process returns to step S8.
If O and YES in step S9, the process proceeds to step S21 in FIG. 4 to perform facsimile reception.

In step S21 of FIG. 4, after performing a facsimile reception process including a predetermined signal exchange and training according to a facsimile communication protocol, a facsimile reception process of receiving facsimile image data is performed in a step S22. Then, in step S23, the public telephone line L is released, and the incoming call processing ends.

As described above, according to the present embodiment, when an incoming call is received from a facsimile communication network, the main control unit 1 stores information indicating that fact in the incoming call history table 7a (step S11 in FIG. 2). Therefore, it becomes clear that the reason why there is no outgoing telephone number information by the outgoing telephone number notification service (non-notification reason) is an incoming call from the facsimile communication network.

Further, the main control unit 1 stores information stored in the transmission terminal identification signal (TSI) from the facsimile communication network in the reception history table 7a in addition to the information indicating the reception from the facsimile communication network. Step S12) Since not the caller telephone number information from the caller telephone number notification service but also the telephone number information from the facsimile communication network is stored, the caller can be specified and confirmed. In the case of facsimile communication via a normal public telephone network, for example, instead of the transmission terminal identification signal (TSI) input and set by the originating operator or the like at the time of initial setting of the facsimile apparatus, (TSI)
In many cases, the setting of the SI signal is not correctly set. For example, even if the setting is not changed even when the facsimile apparatus is moved, the reliability is relatively low. ), The transmission terminal identification signal (TSI) set by the telecommunications carrier in the exchange of the facsimile communication network and having relatively high reliability is stored in the incoming call history table 7a, so that the reliability of the caller telephone number is extremely high. high.

Further, the contents stored in the incoming call history table 7a are displayed on the display unit 4 or printed on paper using the image recording unit 3 and notified to the operator. The operator can surely grasp the telephone number information and the reason for non-notification.

<Modification> In the above embodiment, the example of the facsimile apparatus 20 has been described. However, the present invention is not limited to this, and is connected to a public network such as a public telephone network or a public digital line network. For example, the present invention can be applied to a communication terminal device including a data communication device.

[0026]

As described above in detail, according to the communication terminal device of the first aspect of the present invention, in the communication terminal device for storing the caller number coming from the exchange of the telecommunications carrier in the history memory, When a call is received from a facsimile communication network, a control means is provided for storing information indicating the fact in the history memory. Therefore, it becomes clear that the reason why there is no calling telephone number information by the calling telephone number notification service (non-notification reason) is an incoming call from the facsimile communication network.

According to a second aspect of the present invention, in the communication terminal device according to the first aspect, the control means may further include information indicating an incoming call from the facsimile communication network, and information from the facsimile communication network. Is stored in the history memory. Therefore,
Although not the caller telephone number information by the caller telephone number notification service but also the caller telephone number information from the facsimile communication network, the caller can be identified and confirmed. In the case of facsimile communication via a normal public telephone network, for example, instead of a transmission terminal identification signal (TSI) input and set by an originating operator or the like at the time of initial setting of the facsimile apparatus, the setting of the TSI signal is correctly set. In many cases, the reliability is relatively low because the setting may not be changed even if the facsimile machine is moved, etc., for example), and the telecommunications carrier sets the facsimile at the exchange of the facsimile communication network. Since the transmitting terminal identification signal (TSI) having a relatively high reliability is stored in the history memory, the reliability of the caller telephone number is extremely high.

According to a third aspect of the present invention, there is provided the communication terminal device according to the first or second aspect, further comprising a notifying unit for notifying the contents of the incoming call history memory. Therefore, the operator can reliably grasp the contents of the incoming call history memory.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a facsimile apparatus 20 having an incoming call function from a facsimile communication network according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of an incoming call history table 7a in a RAM 7 of FIG.

FIG. 3 is a flowchart showing a first part of an incoming call process executed by the main control unit 1 of the facsimile machine 10 of FIG.

FIG. 4 is a flowchart showing a second part of the incoming call processing executed by the main control unit 1 of the facsimile machine 10 of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Main control part, 3 ... Image recording part, 4 ... Display part, 6 ... ROM, 7 ... RAM, 7a ... Reception history table, 10 ... Fax modem, 11 ... NCU, 20 ... Facsimile apparatus, L ... Public telephone line .

Claims (3)

[Claims] 1. A communication terminal device for storing a caller number arriving from an exchange of a telecommunications carrier in a history memory, wherein when a call is received from a facsimile communication network, information indicating that fact is stored in the history memory. A communication terminal device comprising means. 2. The apparatus according to claim 1, wherein the control means stores, in the history memory, information stored in a transmission terminal identification signal from the facsimile communication network in addition to information indicating an incoming call from the facsimile communication network. The communication terminal device according to claim 1. 3. The communication terminal device according to claim 1, wherein said communication terminal device further comprises a notifying means for notifying the contents of said incoming call history memory.