JPH04225658A - Call system for telephone - Google Patents

Abstract

PURPOSE:To resume a call since a caller going away from a telephone set listens to a howler audible tone from a receiver and returns to the telephone set. CONSTITUTION:A call tone generation device 11 where an exchange 10 receiving a request transmits the howler audible tone to an opposite telephone set 1 as a busy call tone when the busy call request including the telephone number of an opposite party is transmitted from one busy telephone set 2 in a prescribed process is given.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone calling system that broadcasts an audible tone from an off-hook receiver to call a nearby person.

0002

[Prior Art] Conventionally, in this type of telephone calling system, when the handset is disconnected, the exchange connects the howler sound source according to a predetermined procedure by the maintenance personnel, and broadcasts the howler sound from the handset as an audible sound. Ta.

0003

[Problems to be Solved by the Invention] The above-mentioned conventional telephone calling system has a structure in which a maintenance person sends a howler sound from the switchboard according to a predetermined procedure to make the call. When a caller is away from the phone for some reason, the problem is that even if the other caller attempts to express his or her intention to the other party, such as by urging the other party to resume the call, there is no way to convey his or her intention to the other party. there were.

An object of the present invention is to provide a telephone calling method that solves the above-mentioned problems by setting a call request procedure during a call and connecting a call tone (howler sound) to the other party. It is in.

[0005]

[Means for Solving the Problems] The basic structure of a telephone calling system according to the present invention is to broadcast an audible sound from an off-hook receiver to call a nearby person, in which the audible sound is used as a ringing tone. When a call-in-progress request is received from the telephone in use according to a predetermined procedure, the ring-in-progress request is received from the telephone in progress, and the ring-in-progress request is received by the telephone in the communication process. and an exchange that connects the ringing tone generating device to a communication path in which the called telephone is busy when receiving the call request while transferring the call to the exchange.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the present invention. In the figure, the device of the interface part is omitted.

[0007] As shown in the figure, a telephone 1 is housed in an exchange 10 and is communicating with a telephone 2 housed in an exchange 20 via a communication path 30 .

Each of the exchanges 10 and 20 has a central control unit 17 and 27, respectively, and signals between the exchanges 10 and 20 are transmitted via a signal path 31.

[0009] The ringing tone generating device 11 added in the present invention supplies a howler audible tone to the communication path, which allows a receiver to call a nearby person.

Further, the illustrated signal receiving device 21 is connected by the exchange 20 in response to a call from the telephone 2, and transmits a dial request tone and receives a dial code.

Next, the main operating procedures will be explained with reference to FIG.

When a hooking operation is performed on the telephone 2 during a call, the exchange 20, under the control of the central control unit 27, transmits a hold tone to the telephone 1 at the destination via the communication path 30, and also sends a signal receiving device to the telephone 2. Connect 21.

Since the signal receiving device 21 first sends a dial tone to the telephone 2, it receives a dial code from the telephone 2. The dial code includes the telephone number of the destination telephone 1 and a special number for requesting a call during a call.

The dial code received by the signal receiving device 21 is inherited by the central control device 27, the signal receiving device 21 is disconnected from the telephone 2, and the telephone 2 is again connected to the communication path 30.
It is connected to telephone 1 via.

The central control unit 27 sends a busy page request containing the telephone number of the called telephone 1 to the telephone 1 via the signal path 31.
to the central control unit 17 of the exchange 10 that accommodates the data.

[0016] The central control unit 1 receives the busy call request.
7 is a ringing tone generating device 1 in the communication path of the telephone 1 which is the called party.
1 to transmit an audible howler sound as a ringtone. Howler audible sounds are heard in the neighborhood through a handset, so in the case of a handset, the howler audible sound can be heard on the requester's telephone 2 through the handset.

As a precaution, when the ringing tone generating device 11 is connected to each of the transmitting and receiving channels, confirmation on the requester side becomes easier. In this case, the audible tone sent to the requester's telephone 2 via the transmission path may be a normal ringing tone.

When the caller returns to telephone 1 due to the ringing tone during a call, he or she performs a hooking operation.

The central control unit 17, which receives the hooking operation of the telephone 1 via the ringing tone generating device 11, disconnects the ringing tone generating device 11 from the communication path of the telephone 1, and reconnects the telephone 1 and the telephone 2 through the communication path. so you can talk normally.

In this embodiment, a request from telephone 2 to telephone 1 has been explained, but if the exchange has a signal receiving device and a ringing tone generating device, a call can be made from any direction, and calls can be made and received. It is unrelated to the call.

[0021] In this embodiment, the calling request is transmitted via the signal path, but means via the communication path can be applied and combined with well-known techniques, and the above description does not limit the present invention. .

[0022]

As explained above, in the present invention, one party during a call transmits a calling request including the telephone number of the other party, and the exchange that receives the call transmits a howler audible tone to the other party's telephone as the busy ring tone. By transmitting the message to the handset, it is possible to call the person who left the telephone back to the telephone and resume the conversation.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a telephone calling system of the present invention.

[Explanation of symbols]

1, 2 Telephone 10, 20 Exchange machine 11 Ring tone generator 17, 27 Central control unit 21 Signal receiving device 30 Call path 31 Signal path

Claims (1)

[Claims] 1. A telephone ringing system that broadcasts an audible tone from a handset in an off-hook state to call a nearby person, comprising a ringing tone generating device that generates the audible tone as a ringing tone, and a ringing tone generated by the telephone of the other party. When a busy call request requesting broadcasting is received from the telephone in use according to a predetermined procedure, the busy call request is sent to the exchange that accommodates the telephone of the other party. 1. A telephone calling system, comprising: an exchange that connects the ringing tone generator to a communication path during which the calling telephone is busy.