JP2001230851A - Communication terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication terminal that can find that no number display service is set to a communication equipment connected to this communication terminal. SOLUTION: The communication terminal reports the abnormity of a communication equipment T when not detecting an acknowledge signal from the communication equipment T within a prescribed time after detecting a start signal of the number display service sent from an exchange.

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 such as a facsimile device to which a telephone having a number display function is connected.

[0002]

2. Description of the Related Art Conventionally, one of the pre-communication information notification services has been proposed.
First, a number display service is operated, and by using this service, a telephone number or the like can be displayed on a telephone or the like before a call is answered.

FIG. 4 is a diagram showing the basic operation of the number display service. In the figure, “〜” is a number assigned to each operation, and “information receiving terminal” indicates a communication terminal device such as a telephone or a facsimile device that can use this service.

[0004] The subscriber line exchange inverts the polarities of the subscriber lines L1 and L2 on the receiving terminal side when another communication terminal device calls the information receiving terminal for which a service contract has been made in advance. , An information receiving terminal activation signal () is transmitted. On the other hand, when the receiving terminal is ready to receive information such as the source telephone number, the receiving terminal closes the DC circuit in the terminal (closes the DC loop) and generates a primary response signal (). If the exchange detects the primary response signal () based on the DC resistance value within the time t after the polarity reversal (), the exchange sends the source terminal number information () to the receiving terminal as a modem signal. When the receiving terminal receives the modem signal (), it opens the DC circuit (opens the DC loop) and sets it as a reception completion signal (). When the exchange detects the reception completion signal (), it sends out a calling signal (). .

When the information receiving terminal detects the calling signal (), it outputs a ringing tone to prompt a response. , So it is possible to take measures corresponding to the other party. For example, leave the call as it is,
You can switch to an answering machine.

When the information receiving terminal responds to the calling signal by picking up the handset, the DC circuit is closed again (DC loop closed), and the secondary response signal () is returned.
Then, the polarity is reversed (), and the call () becomes possible.

When a telephone having a number display function is connected to a facsimile apparatus which is a communication terminal apparatus, the setting of the telephone is set to execute the number display function, and the setting of the facsimile apparatus is changed to the setting of the connected telephone. The number display function is executed, and the facsimile apparatus itself is set not to execute the number display function. In this case, the facsimile apparatus cannot start the facsimile reception operation because it cannot recognize the signal of the number display, and the line control of the number display service is performed in both the telephone and the facsimile apparatus. Absent.

[0008]

However, in the above-mentioned conventional communication terminal apparatus, since the telephone is not set to execute the number display function, the telephone does not display the caller information and is left as it is. There was a case. That is, if the exchange does not detect the primary response (FIG. 4) within a predetermined time (time t in FIG. 4) from the polarity reversal (FIG. 4), it does not transmit the source information and the like, (FIG. 4), the telephone can respond to the call signal to enable a telephone call, so that the cause of the lack of display of the source information may not be known.

[0009] Also, when the line control of the number display service is performed on behalf of the facsimile apparatus side, the telephone side may be left without displaying the transmission source information.

[0010] The present invention has been made in view of such circumstances, and has as its object to provide a communication terminal device that determines that a number display service has not been set in a connected communication device. .

[0011]

In order to achieve the above object, according to the present invention, a communication terminal device to which a communication device having a number display function is connected according to the present invention activates a number display service sent from an exchange. If a response signal from the communication device is not detected within a predetermined time after detecting the signal, the communication device is notified of an abnormality.

Here, a telephone compatible with a number display can be applied to the communication device having a number display function, and a facsimile device, a personal computer having a communication function, and the like can be applied to the communication terminal device. When using this communication terminal device,
You need to have a number display service contract.

The activation signal of the number display service refers to an information reception terminal activation signal (see FIG. 4), and the response signal refers to a primary response signal (see FIG. 4). In this communication terminal device, upon detecting the activation signal, the presence or absence of a response on the connected communication device side is monitored.

According to a second aspect, in the first aspect, when an abnormality of the communication device is notified, the communication terminal device itself transmits a response signal to the activation signal of the number display service from the next incoming call. Set to.

According to a third aspect of the present invention, in the second aspect, the communication terminal device itself sends a response signal to the activation signal of the number display service from the next incoming call to notify the abnormality of the communication device. Is included in the notification.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram illustrating an example of a configuration of a communication terminal device. Here, the configuration of the facsimile apparatus F is shown as the communication terminal apparatus, but the present invention is not limited to this, and may be a personal computer having a communication function.

The facsimile apparatus F is externally connected to a telephone T having a number display function as a communication device. However, the communication device is not limited to the telephone T, and a number display for detecting transmission source information. A device having a function, for example, a personal computer having a communication function may be used. Note that this number display function is not limited to being built in the telephone T side, and may be externally provided as an adapter in front of the telephone T for the telephone line L.

In FIG. 1, reference numeral 1 denotes a main control unit for controlling each of the following units, such as a CPU, etc .; A signal detection unit for detecting the incoming call signal and an information reception terminal activation signal (hereinafter simply referred to as an "activation signal") of the number display service, and an off-hook (line) of the telephone set T connected to the connection terminal. An off-hook detection unit for detecting on-hook (line open) and on-hook (line open), and a CM for closing / opening the telephone line L
L relay, 6 is a transformer, and 7 is a modem for modulating and demodulating a signal for performing facsimile communication.

Reference numeral 8 denotes a display unit composed of a liquid crystal display or an LED lamp, 9 denotes an operation unit composed of various keys and the like, 10 denotes a reading unit that reads image data from a set document, and 11 denotes facsimile reception. Images,
A recording unit that prints out an image read from the reading unit 10 on recording paper that has been set in advance, 12 is an image memory that stores encoded image data, and 13 stores various data that is necessary for controlling the apparatus F. RAM 14 is a ROM in which a control program and the like are stored in advance.

In the facsimile apparatus F, the resistor R and the capacitor C connected in series are connected in parallel with the CML relay 5, so that the modem 7 can be connected without closing the CML relay 5 and closing the line L. , An AC signal can be detected.

The facsimile apparatus F encodes the image of the original read by the reading unit 10, temporarily stores the image in the image memory 12, sequentially reads out the modulated image, modulates it by the modem 7, and transmits it to the telephone line L. At the same time, a basic operation of sequentially storing image data facsimile-received from another communication terminal device via the telephone line L in the image memory 12, decoding the image data while reading the data, and recording the image data by the recording unit 11 is performed.

As described above, the signal detecting section 3 detects the call signal (FIG. 4) sent from the exchange and the activation signal (FIG. 4) of the number display service. The calling signal is a signal that repeats an ON period of 1 second and an OFF period of 2 seconds.
Since the signal repeats an off period of 5 seconds, the signal detection unit 3 discriminates between the two based on the difference in time length between the on period and the off period. In addition, the operation unit 9 may be set in advance to connect the telephone T with a number display function, and the signal detection unit 3 may determine that the signal detected first from the standby state is the activation signal. .

When the signal detection unit 3 detects the activation signal, the main control unit 1 detects the activation signal, and when the response signal from the telephone T is not detected within a predetermined time, the abnormality of the telephone T side. Notify. That is, when the signal detection unit 3 detects the activation signal (FIG. 4) after the polarity reversal detection unit 2 detects the polarity reversal (FIG. 4), the main control unit 1 sends the primary response signal (FIG. 4) is monitored. If the off-hook detection unit 4 does not detect the closing of the DC loop within a predetermined time from the detection of the activation signal or the reversal of the polarity, it is determined that the number display function has not been set on the telephone T side, and an error is notified. I do.

The notification of this abnormality is performed by displaying a message on the display unit 8, turning on or off a lamp, and printing out a message by the recording unit 11. Alternatively, the notification may be made by outputting an alarm sound, outputting a voice message, or the like.

By operating in this manner, the user knows that the number display function has not been set on the telephone set T. Therefore, if the user sets the number display function, the caller display and the like are displayed on the telephone set T thereafter. Will be able to do.

The predetermined time during which the primary response is monitored by the main control unit 1 is a time when the exchange determines that the primary response has not been transmitted and shifts to transmitting a call signal (for example,
The time may be 6 seconds after the polarity inversion, or may be shorter (for example, 5.5 seconds from the polarity inversion), and the facsimile apparatus F may substitute the primary response.

Further, when the telephone T side does not make a primary response and notifies the abnormality of the telephone T, the facsimile apparatus F itself responds to the activation signal of the number display service from the next incoming call. Can be set to be sent. With this setting, when an activation signal is detected from the next incoming call, the CML relay 5 is closed to make a primary response, and the source information (FIG. 4) transmitted through the telephone line L is transmitted to the resistor R. Through the capacitor C,
It is received by the modem 7 and its source information is displayed on the display unit 8. Then, by opening the CML relay 5, a reception completion signal (of FIG. 4) is generated, and a calling signal (of FIG. 4) is generated.
In a state where it can be detected by the signal detection unit 3. If the call signal is detected and responded to, it shifts to facsimile reception, telephone call with telephone T, and the like.

As described above, if the number display function is automatically set on the facsimile apparatus F side, there is no need to perform the setting operation of the number display function on the telephone set T side, and thereafter, the facsimile apparatus F side checks the transmission source information and the like. become able to.

As described above, the facsimile apparatus F
When the number display function is automatically set on the side, the facsimile apparatus F itself is set to send a primary response signal in response to an activation signal of the number display service from the next incoming call in order to notify the abnormality of the telephone T. It may include a notification that the user has done the job. Then, the number display function can be canceled in the facsimile machine F, returned to the original state, and set on the telephone T side.

FIG. 2 is a flowchart (100 to 114) showing the operation of the facsimile machine F. The signal (CI) sent from the exchange is detected (10
0), if the signal is a calling signal (IR) (N of 101, Y of 114), the processing shifts to the incoming call processing.

On the other hand, if the detected signal is a number display service activation signal (CAR) (Y of 101), the primary response by the telephone set T is monitored. When the primary response is detected (Y in 102) and the source information is received (103), the source information and the like can be displayed on the display unit 8 of the facsimile machine F. Thereafter, if a call signal (IR) is detected during a predetermined time (for example, 3 seconds), the call is received (104, 105).

If the primary response is not detected within a predetermined time (for example, 5.5 seconds) after the start signal is detected (N of 102, Y of 106, Y of 107), the facsimile machine F itself makes the primary response. (108), and receives the source information (1).
09), a reception completion response is made (110). Then, the abnormality of the telephone T is notified (111), the number display function of the telephone T is released (112), and the number display function is set to be executed by the facsimile machine F even after the next incoming call (113).

Here, even when the transmission of the start signal from the exchange is stopped (N in 106), an abnormality on the telephone T side is notified (111) without performing a primary response or the like, and the number display function of the telephone T is performed. Is canceled (112), and execution of the number display function in the facsimile machine F from the next incoming call is set (113). Note that when the facsimile machine F does not make a primary response in this incoming call, steps 108 to 110 are omitted. As described above, even when the primary response of the telephone T is not detected, if a call signal is detected within a predetermined time (for example, 3 seconds), the call is received (104, 105).

FIG. 3 shows an example of notification of an abnormality of the telephone set T in the facsimile apparatus F (see step 111 in FIG. 2). FIG. 3A shows an example of the display screen 8a on the display unit 8, and the display message prompts the user to set the number display function on the telephone set T. FIG. 3B shows an example of the recording paper 11a recorded by the recording unit 11, and the print message informs that the number display function has been set on the facsimile apparatus F side.

[0035]

As can be understood from the above description, the communication terminal device according to any one of the first to third aspects of the present invention has a predetermined period of time after detecting the activation signal of the number display service. Meanwhile, when the response signal from the connected communication device is not detected, the abnormality of the communication device is notified, so that the user knows that the number display function is not set in the communication device. By setting the number display function on the communication device side, display of transmission source information and the like can be performed thereafter.

In particular, according to the present invention, when the abnormality of the communication device is notified, the communication terminal device itself is set to transmit a response signal to the activation signal of the number display service from the next incoming call. . As described above, if the number display function is automatically set on the communication terminal device side, the setting operation of the number display function on the connected communication device side is not required, and thereafter, the communication terminal device side checks the source information and the like. be able to.

According to the third aspect of the present invention, the communication terminal device itself is set to send a response signal to the activation signal of the number display service from the next incoming call in order to notify the abnormality of the communication device. Therefore, it is possible to cancel the number display function in the communication terminal device, return it to the original state, and set the number display function on the connected communication device side.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of a configuration of a communication terminal device according to the present invention.

FIG. 2 is a flowchart showing an example of the operation of the communication terminal device of the present invention.

FIG. 3 is a diagram illustrating an example of notification of an abnormality of a communication device.

FIG. 4 is a diagram showing a basic operation of a number display service.

[Explanation of symbols]

 F Facsimile machine 1 Main control unit 3 Signal detection unit 4 Off-hook detection unit 7 Modem 8 Display unit 11 Recording unit T Telephone with number display function

Claims (3)

[Claims] 1. A communication terminal device to which a communication device with a number display function is connected, wherein a response signal from the communication device is detected within a predetermined time after detecting an activation signal of a number display service sent from an exchange. A communication terminal device for notifying an abnormality of the communication device when no communication is detected. 2. When an abnormality of the communication device is notified,
The communication terminal device according to claim 1, wherein the communication terminal device is set to transmit a response signal to a start signal of the number display service from the next incoming call. The notification of the abnormality of the communication device includes a notification that the communication terminal device itself is set to transmit a response signal to the activation signal of the number display service from the next incoming call. The communication terminal device according to claim 2, wherein the communication terminal device includes: