JPH02111146A - Telephone set - Google Patents

Abstract

PURPOSE:To identify only a mischievous call based on experience and to reject an incoming call by storing a caller station telephone number in a call when a specific operation is applied during talking in reply with the call and avoiding the ring of a call tone when the telephone number is stored in the event of a call. CONSTITUTION:When a registration key 21 is turned on during talking, the talking is regarded as a mischievous call and it is registered in an incoming rejection telephone number file. When a call comes, its caller station telephone number is read and whether or not the said telephone number is registered in the file is discriminated and when the number is not registered, the call tone is rung. If the number is registered, the call tone is not rung and the telephone set awaits the stop of the call.

Description

[Detailed description of the invention] (AL industrial application field The present invention relates to a telephone that can prevent prank calls.

(b1 Background of the Invention Currently, telephones are becoming extremely popular, but the caller can call the other party freely, and the receiver cannot identify the caller until the receiver answers (hook-off). For this reason, it is extremely easy to make prank calls. Many people have been inconvenienced by this.Therefore, to solve this problem, prank-proof telephones have been proposed.Prank-proof telephones generally do not require a PIN code. It was used to allow/reject calls by inputting information.

That is, when a call is received, the system automatically hooks off the caller, prompts the other party to input a PIN number from the telephone, and only sounds a ring tone if the PIN number is correct.

(C) Problems to be Solved by the Invention However, with such telephones, it is necessary to inform the person authorized to make a call in advance of the PIN number, and even if the call is necessary, if the other party does not know the PIN number, The drawback was that you couldn't make phone calls.

In view of these problems, it is an object of the present invention to provide a telephone that can automatically determine whether or not to make a call after identifying the telephone number of an incoming call.

(Problems for Solving Problem d1) The telephone set of this invention was developed by paying attention to the fact that in 15DN (high-speed digital line), an incoming call message is sent with the telephone number of the originating station added. On the telephone used in the line, when a specific operation is performed during a call in response to a call, there is a storage means for recording the telephone number of the originating station of the call, and when there is a call, a storage means is included in the incoming call message The present invention is characterized in that it is provided with an incoming call rejection means that reads out the calling station telephone number and searches the storage means, and does not make a ringing tone when the telephone number is stored.

(81 Effect) The telephone of the present invention is used on an 15DN (high-speed digital line), etc. In this line, an incoming call message is sent with the telephone number of the originating station added. Normally, when there is a call, a ring tone is emitted. The user hooks off and makes a call, and when it turns out to be a prank call, performs a specific operation (such as pressing the registration key).When the user performs a specific operation, the phone number being called is stored as a storage device. Remember.

When an incoming call message is received, the storage means is searched for the telephone number, and if the corresponding telephone number is stored, it is determined that it is a prank call and the ring tone of this telephone is not made to sound. This makes it possible to reject incoming calls after determining that the call is a prank call, and eliminates the need to limit the number of people who can make calls from the beginning, unlike the conventional PIN code system.

(f) Embodiment FIG. 1 is a block diagram of a telephone that is an embodiment of the present invention. This telephone is directly connected to the 15DN line (NTT's INS line in Japan).

The l5DN line is connected to the l5DN layer 1 control unit 16 of the telephone. l5DN layer 1 control unit 16 is l5D
Controls the transmission and reception of digital signals between the N line and the telephone. The CPUIO controls the entire operation of the telephone. CPU10 has ROM11. RAMI 2. Backup RAM 13°D channel control section 14 and ■1
0 control unit 15 is connected. The I10 control unit 15 has a calling buzzer 19. Numeric keypad 20. A registration key 21 and a display 22 are connected. In addition, the l5DN layer 1
The control unit 16 includes the D channel control unit 14 and the C0DE.
C17 is connected. A handset (telephone receiver) 18 is connected to the GODEC 17 . The D channel control unit 14 reads the calling station telephone number from the received calling signal and notifies the CPU 10 of the telephone number. The C0DEC 17 performs A/D and D/A conversion of the transmitted and received call voice. The operating program of the telephone is stored in ROMII, and RAM1
2 stores the telephone number etc. input from the numeric keypad. Further, a call rejection telephone number file is set in the backup RAM 13. When a call is received from a telephone number registered in the receiving station telephone number file, the ringing buzzer 19 does not ring.

FIG. 2 is a flowchart showing the operation of the telephone.

It waits until it receives a calling signal on nl. When there is a call, it reads the calling station's telephone number (n2) and determines whether this telephone number is registered in the file (n3).
. If it is not registered, it will ring (n4) until hooked off (n5) or the call is canceled (nlo
) Continue this ringtone. If hooked off, n5→n
At 6, the call state is entered, and this state continues until hook-on (nl). If the registration key 21 is pressed during a call, the call is determined to be a prank call and is registered in the incoming call rejection phone number file (n12). When it is hooked on, it disconnects from the l5DN line (n8) and returns to n,1.

On the other hand, if the telephone number of the incoming call message is already registered in the call rejection phone number file, the call will be stopped at 09 without ringing and the call will be canceled (the other party's call will be canceled). gave up on prank calls) and then returned to Nl.

n2. n3. n9 corresponds to the incoming call rejection means of the present invention.

(g) Effects of the Invention As described above, according to the telephone of the present invention, it is possible to prevent calls from being made from a telephone that has received a prank call. You can identify and reject calls. This makes it possible to improve the efficiency of use of the telephone compared to a system that only allows incoming calls from a limited number of parties, such as a password, and rejects all other calls, including necessary calls. In addition, the operation is quick because it is possible to reject an incoming call without hooking off.

13-Back amplifier RAM.

14-D channel control section, 1-Registration key

Claims (1)

[Claims] (1) On a telephone used on a public telephone line where an incoming call message including the telephone number of the originating station is sent when a call is made, if a specific operation is performed during the call that answered the call, the telephone number of the originating station of the call is transmitted. a storage means for storing a call; and an incoming call rejection means that reads out a calling station telephone number in an incoming call message when a call is received, searches the storage means, and does not make a ringtone sound when the telephone number is stored; A telephone characterized by being provided with.