JP2000022842A - Telephony equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain the avoidance of a malicious telephone call or erroneous telephone call by sending a message requesting the input of a stored caller number through a control means when the caller number cannot be detected from an information signal, and reporting call incoming only when the caller number is detected within prescribed time and coincident with the registered number. SOLUTION: A control circuit 7 controls respective parts according to an operation program stored in a ROM 8 and a caller number detecting circuit 3 detects the presence/absence of the caller number in the information signal on a telephone line. When there is the caller number, the control circuit 7 sounds a bell 11 and performs call incoming processing but when there is no caller number, the message of 'Please input your telephone number' stored in a RAM 9 is sent to a caller. Only when the caller number is detected within the prescribed time by a DTMF detecting circuit 6 and coincident with the registered number, the control circuit 7 sounds the bell 11 and performs off-hook so that speaking is enabled. In the other case, the bell 11 is not sounded, on-hook is performed and speaking is not permitted so that the malicious telephone call or the like can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone apparatus capable of utilizing a caller number notification service for transmitting a caller number from a station before a call signal.

[0002]

2. Description of the Related Art At present, an originating telephone number display service in which a telephone station (subscriber exchange) informs a telephone apparatus of a called party of a telephone number (calling party number) of the telephone apparatus (information receiving terminal) of the calling party. (Pre-communication information notification service) is provided by Nippon Telegraph and Telephone Corporation (NTT).

[0003] This telephone number sending process will be described with reference to the time chart of FIG. By calling the caller's phone,
The central office inverts the polarities of the two telephone lines L1 and L2. Then, the telephone office performs CAR (information receiving terminal activation signal).
(See FIG. 5) to the called party's telephone. This CAR
The telephone of the called party which has received the ACK sends a primary response signal to the central office by forming a DC loop. At this time, the telephone does not ring even when receiving the CAR.

When the telephone station detects the primary response signal, it transmits a modem signal (information signal) including the calling party number to the telephone of the called party. Upon receiving the modem signal, the telephone of the called party cuts off the DC loop and sends a reception completion signal to the central office. When the telephone station detects the reception completion signal, it determines that the telephone number transmission processing has been completed and transmits a normal call signal (IR) (see FIG. 6). The telephone that has received the call signal notifies the incoming call by ringing. In this way, the called party can be notified of the calling party's telephone number before ringing.

[0005] However, some callers do not want their caller ID to be known to the called party. To this end, the sending of the caller number can be prohibited or allowed by the caller. For example, if dialing with "184" prefixed to the telephone number, the calling party number will not be included in the modem signal and the calling party number will not be sent to the called party. Further, by subscribing the subscriber to the station, it is possible to prevent the caller's number from being transmitted without adding "184". At this time, by adding "186", the calling party number is transmitted.

[0006] Such telephones for which the caller ID is not displayed include telephones that are undesirable for the called party, such as mischievous telephone calls and malicious solicitations. For this reason, telephones that do not display an incoming call (ringing) for telephones that do not display a caller number are commercially available.

[0007]

However, if all callers who do not report their caller numbers are unconditionally rejected, even non-malicious callers will be rejected.

Further, since the called party's telephone does not notify the incoming call, there is a problem that the calling party does not know the reason that the called party does not receive a response from the called party no matter how long it waits.

[0009]

SUMMARY OF THE INVENTION The telephone apparatus of the present invention has been made in view of the above points, and provides a notification means for notifying an incoming call, a storage means for storing a message, and a caller number based on the information signal. A control means is provided for sending a message requesting the input of a caller number to the caller when the caller number cannot be detected, and for notifying an incoming call when the caller number is detected within a predetermined time.

A storage means for storing a message and a registration number, and a message requesting the caller to input the caller number when the caller number cannot be detected from the information signal. And a control means for transmitting the caller number within a predetermined time, and performing notification of an incoming call when the detected caller number matches the registration number stored in the storage means.

If the caller number cannot be detected from the information signal, a control is transmitted to the caller to notify the caller that a call cannot be made unless the called party detects the caller number. Means.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a main part of the present invention.

(1) is a polarity reversal detection circuit for detecting the reversal of the polarity of the telephone line. (2) is an incoming call detection circuit which is connected to a telephone line and detects an incoming call (call signal).
Reference numeral (3) denotes a caller number detection circuit which detects a CAR input via the network circuit (4) and detects a telephone number (caller number) of the caller from a modem signal.

A network circuit (4) is connected to a telephone line and performs line release (release of DC loop) / close (DC loop formation) and 2-wire / 4-wire conversion. (5)
Is a handset having a speaker (51) and a microphone (52). (6) is a DTMF detection circuit which detects a DTMF signal and outputs it to the control circuit (7).

(7) a control circuit comprising a microprocessor, ROM (8) storing an operation program
Each part is controlled based on. (9) is a RAM, which is information necessary for the operation of the control circuit (7), for example, a telephone directory (9).
1) and a voice message (92) are stored. (10)
Is a dial transmission circuit for transmitting a dial signal of a number designated by the control circuit (7). (11) is a bell, which outputs a ringing tone upon receiving a call. (12) is a liquid crystal display means for displaying a telephone number, a name and the like. (13)
Is input means for inputting a telephone number and the like.

Next, main operations of the first embodiment will be described. FIG. 2 is a flowchart showing the operation of the control circuit (7). When receiving the modem signal shown in FIG. 5 (Y in S1), the control circuit (7) sends out a reception completion signal (S2), receives a call signal (Y in S3), and issues a call from the received modem signal. It is checked whether the caller number could be detected (S4).

If the calling party number can be detected (Y in S4), the bell (11) is normally sounded to perform an incoming call process (S5).

If the caller ID cannot be detected (N in S4), the bell (11) is not sounded (S4).
6) Go off-hook (S7), and send a message "Please enter your telephone number by tone signal" to the caller (S8). In this way, the caller is requested to input a telephone number, and if the telephone number of the caller cannot be detected by the DTMF detection circuit (6) within a predetermined time (N in S10, S11 (Y), the call is turned on (S12), and the call is rejected.

The caller's telephone number is set to DTMF within a predetermined time.
If it can be detected by the detection circuit (6) (S10
Y), the number corresponding to the detected telephone number is in RAM
It is checked whether it is not stored in (8), and if there is no matching telephone number (N in S13), it is hooked on (S1).
2) Reject the call.

If there is a matching telephone number (Y in S13), a pseudo ringing (pseudo ringing tone) is generated from the bell (11), and a pseudo ringback tone is output to the caller. To perform an incoming call process (S14).

[0021] In this manner, the caller who has not notified the caller number can make a telephone call in response to the request for inputting the telephone number.

In step S13, if the number entered by the caller does not match the stored number, the call is rejected. Thus, it is possible to avoid a mischievous telephone call and a call with a caller who inputs an appropriate number.

Next, a second embodiment will be described. The block diagram of the second embodiment is the same as that of FIG. 1 of the first embodiment, and the operation of the control circuit (7) is different. FIG. 3 is a flowchart showing the operation of the control circuit (7) of the second embodiment. FIG.
Steps S1 to S7 are the same as steps S1 to S7 in FIG. 2 which is a flowchart of the first embodiment, and a description thereof will be omitted.

If the caller number cannot be detected (N in S4), the control circuit (7) of the second embodiment does not ring the bell (11) (S6) and goes off-hook. Then (S7), a message "Sorry, it is set so that you cannot make a call unless your phone number is displayed here" is sent to the caller (S21), and the user goes off-hook (S22). ). After this,
The caller can be notified of the caller number and can make a call by dialing again.

In this manner, a caller who does not notify the caller number can be notified of the reason why the call cannot be made.

[0026]

As described above, a caller who has not notified the caller number can make a telephone call in response to a request for inputting a telephone number. At this time, by preventing the call from being permitted unless it matches the registered number, it is possible to avoid a mischievous telephone call and a call with a caller who inputs an appropriate number.

Further, a caller who is not notified of the caller number can be notified that a call can be made by dialing again so as to notify the caller number.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a main part of a first embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the control circuit according to the first embodiment of the present invention.

FIG. 3 is a flowchart illustrating an operation of a control circuit according to a second embodiment of the present invention.

FIG. 4 is a time chart showing an operation of a calling telephone number display service.

FIG. 5 is a diagram showing a CAR waveform in a calling telephone number display service.

FIG. 6 is a diagram showing a waveform of a call signal in a calling telephone number display service.

[Explanation of symbols]

 3 Caller number detection circuit 6 DTMF detection circuit 7 Control circuit 9 RAM 11 Bell

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hisayuki Ogura 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Inside Sanyo Electric Co., Ltd. (72) Inventor Yabumi Kawaguchi 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Sanyo Tottori F-term (reference) in Denki Co., Ltd.

Claims (3)

[Claims] An information signal is transmitted from a station before a call signal, and a caller number notification service is provided which allows a user to select whether the information signal includes or does not include a caller number. An available telephone device, comprising: a notification unit for performing notification of an incoming call; a storage unit for storing a message; and a call to a caller when a caller number cannot be detected from the information signal. A telephone device comprising: a control unit for transmitting a message requesting an input of a calling party number and notifying an incoming call when a calling party number is detected within a predetermined time. 2. A caller number notification service in which an information signal is transmitted from a station before a call signal and a caller's operation can be selected by a caller's operation when the information signal includes or does not include the caller's number. An available telephone device, a notification unit for performing notification of an incoming call, a storage unit for storing a message and a registration number, and a caller when a caller number cannot be detected from the information signal. Sends a message requesting the input of a caller number, detects the caller number within a predetermined time, and notifies an incoming call when the detected caller number matches the registration number stored in the storage means. A telephone device comprising control means for performing the following. 3. A caller number notification service in which an information signal is transmitted from a station before a call signal and a caller's operation is performed to select whether the information signal includes or does not include a caller number. An available telephone device, a storage means for storing a message, and if the caller number cannot be detected from the information signal, the called party detects the caller number to the caller. A telephone device comprising control means for sending a message indicating that a call cannot be made unless the call is made.