JPS62189854A - Telephone signal system - Google Patents

Abstract

PURPOSE:To exclude a malicious call and to inhibit a call ring tone due to wrong dialing at night by providing a PB signal reception circuit to a telephone set to allow the telephone set to receive a password only. CONSTITUTION:When a caller makes a call from a telephone set 1 and sends a selected number of the opposite party, an exchange 2 sends a call signal to a telephone set 3 of a called party, the called party recognizes an incoming call by bell ringing, hooks off the handset to make the talking state. In receiving the call signal by a handset 4, it is not informed to the called party by bell but it is detected by a call signal reception circuit 5 of the handset 4 and the off-hook state is brought without manual intevention to the talking state. A password is sent to the caller from a CODEC and a ROM 8 of the telephone set at this point of time. The returned password is received by a PB reception circuit 5, collated by a collation circuit 6, and when coincident, a call is given by audible tone from an audible tone generating circuit 9 to the called party.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a connection system between an exchange and a telephone device.

In particular, the present invention relates to a telephone signal system in which a password (recited number) 1i is provided to prevent malicious calls, etc. without changing the conventional signal transmitting/receiving unit on the exchange side.

(Prior Art) Conventionally, as a measure to prevent malicious calls, it was difficult to take measures on the exchange side because it involved the signaling system of the exchange, and the only solution was to change the subscriber number.

(Problems to be Solved by the Invention) The above-mentioned countermeasure by reaccommodating subscriber numbers has the drawback that the exchange is performed on the station side, and the subscriber number changes on the subscriber side each time the reaccommodation is performed. Ta. In addition, the conventional signaling system not only detects malicious calls but also calls during the night (or within a specific time).
did not have a function that would only play an audible tone on the telephone when a call was received from a specific person and notify the called party.

The present invention has been made in order to solve the above problems, and has the following features: accept only incoming calls from a specific person, eliminate malicious calls, prohibit acceptance of unnecessary incoming calls, and The purpose of this system is to provide a telephone signaling system that makes it possible to prohibit erroneous receipts.

(Means for Solving the Problems) The telephone signaling system according to the present invention includes a ringing signal detection circuit, a PB
A telephone device is provided that includes a receiving circuit and a verification circuit that matches the numbers received by the PB receiving circuit with a preset password, and the telephone device receives a calling signal from an exchange.
-1 pattern-type talking devices do not notify the called party with an audible tone, but go into an off-hook state, notify exchange 01lI, enter the 1-talk state, and send the password digits from the calling party to the called party with a ringing signal. death.

The called party receives the password, and if the password verification circuit determines that the passwords match, the called party is notified by an audible tone that the call has arrived, and one-way switching is performed. By installing a switch and switching the switch so as to ignore the password, an audible tone is emitted to notify the called party when a calling signal is received from the exchange, similar to the normal telephone sequence. .

(Example) Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an exchange system to which the telephone signaling system according to the present invention is applied, and FIG. 82 is a circuit block diagram of a telephone device (telephone) according to an embodiment of the present invention. In FIG. 1, one caller makes a call from telephone device 1,
When the selected digits of the other party are sent, the exchange 2 sends a ringing signal to the telephone device 3 of the called party, and the called party notices the incoming call by the ringing of the bell, and takes the receiver of the telephone device off-hook to enter the talking state. . Here, when a calling signal is received by the handset 4 in FIG. 2, the called party is not notified by ringing the bell, but is detected by the calling signal receiving circuit 5 of the handset 4, and the call is made in an off-hook state without the intervention of a person. enter the state.

When a call is established, a voice message is automatically sent to the calling party using the telephone device and ROM 8 of the telephone device (telephone) shown in FIG. 2.

When the calling party hears this voice, the calling party uses the PB button to send out the password notified in advance by the called party. In the telephone device of the called party, this password is received by the PB receiving circuit 5 and is notified to the verification circuit 6. The verification circuit 6 verifies the password set by the called party in the PB transmitter circuit 7 with a PB button and the received number, and if they match, the caller receives a caller and uses the ROM 8 to call the called party. Notify you of your presence. On the other hand, the person calling with a cane is called by an audible tone by the audible tone generation circuit 9. (If the passwords do not match, the device automatically goes on-hook and notifies exchange 2 that the call has ended.

In this way, the interface with switch 2 remains the same as before.
Moreover, the called party can be called when the passwords match, and there is no need to answer calls from callers who do not know the password. If the password is disabled by operating the changeover switch, the called party 1 can be called simultaneously with the call from the exchange 2 (as before) (without the password).

(Effect of the invention) As explained above, the present invention provides a telephone device (telephone) K
By providing a PB signal receiving circuit, etc.

When the password (recited number) is enabled (switched), only those who know the password can be accepted, which has the effect of eliminating malicious calls and prohibiting the ringing sound of telephone equipment due to mistaken calls, such as at night. . ``Furthermore, we will enable passwords on business calls, etc. at the end of business, announce the end of business to callers whose passwords do not match, and require passwords in advance for those who should be answering calls even outside business hours.'' If the phone is notified, it becomes possible to call the phone, which increases convenience.Furthermore, when the password is disabled (switched), it can be used as a normal conventional telephone device, which brings many advantages.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an exchange system to which the present invention is applied, and FIG. 2 is a block diagram of a telephone device according to an embodiment of the present invention. 1.3...Telephone device, 2...Switchboard, 4...
Transmitter/receiver, 5... Calling signal receiving circuit. 6... Verification circuit, 7... PB transmission circuit with PB button. 8...Corporate IC and ROM, 9...Audible sound generation circuit.

Claims (1)

[Claims] The telephone equipment connected to the exchange is equipped with a ringing signal detection circuit, P
A verification circuit is provided that collates the numbers received by the B signal receiving circuit and the PB signal receiving circuit, and after the telephone device receives a calling signal from the exchange, it responds to the exchange and enters a talking state, and the caller receives the call signal from the caller. The called party's password is sent to the called party by a PB signal, the called party receives the password with the telephone device, and when the passwords match, the telephone device generates an audible tone. A telephone signaling system, characterized in that it calls the called party and further includes switching means that can disable a password.