JP3161897B2 - Communication terminal connection control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the fact that when a subscriber on a call receives a connection request from a subscriber of a third terminal, the other subscriber is on a call without interruption. The present invention relates to a connection control method for notifying a subscriber of the third terminal.

[0002]

2. Description of the Related Art Conventionally, via a connection control device of an exchange,
When there is a connection request to the connection control device from one of the third terminals to one of the terminals during a call between the subscribers of the first and second terminals, the one of the terminals is joined in the device. It checks whether or not the caller ID is stored. If the caller ID is stored, a ring tone is sent to the one terminal that has made the connection request, and a ring tone is sent to the third terminal. When a hooking signal from the one terminal is received, and a hooking signal from the one terminal is received,
The one terminal and the third terminal are connected to enable a call with a subscriber of the third terminal, and when the user is hooked, a method of restoring the other party is called a call waiting (registered trademark). Connection control method (hereinafter, this method is called call waiting).

[0003]

However, in the above-mentioned method, even if the incoming call from the third terminal is known by the incoming call sound transmitted from the exchange during the call, it is desired to interrupt the talk depending on the other party during the call. Hooking may not be performed for reasons such as absence.

[0004] In such a case, the subscriber of the third terminal that made the call can hear the ringing tone forever, and thus has a drawback that the subscriber is considered to be absent.

[0005] Further, if the ringing tone continues to be transmitted,
There was a problem that the line was put on hold.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problem, the present invention does not interrupt a call when a call is received during a call, and cannot answer a call to a subscriber of a third terminal that has received the call during the call. The purpose of the present invention is to automatically notify the user of this fact and to have the line disconnected, thereby avoiding useless holding of the line and effectively using the equipment of the exchange.

[0007]

According to the present invention, in order to achieve the above object, the connection control device receives an incoming call display sound outside the incoming call display sound sending circuit and the hooking signal monitoring circuit. A circuit for monitoring a dial pulse signal or a dial tone signal (hereinafter, both signals are referred to as dial signals) sent from a terminal, a message table for storing predetermined message information corresponding to the dial signals, And a message sending circuit for sending the message.

In this manner, when one terminal during a call receives an incoming call from the third terminal, and the subscriber of the one terminal cannot interrupt the call, the predetermined dial is kept in the call state. When the number is pressed, a message corresponding to the dialed number is sent to the subscriber of the third terminal to notify that the call is in progress.

[0009]

Since the connection control device of the exchange is configured as described above, if there is an incoming call from the third terminal during a call on the terminal of the subscriber who is receiving the call waiting service, the connection control device displays the incoming call tone. And monitor both the hooking signal and the dial signal from the terminal. When the hooking signal is received, the terminal is connected to the third terminal, and when the hooking signal is received, the terminal is connected to the original partner. .

When the dial signal is received, a message corresponding to the dial signal is extracted from the message table and automatically sent to the third terminal, so that the subscriber can receive a predetermined message without interrupting the call. To the subscriber of the third terminal.

[0011]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG.
4 is a flowchart of one embodiment of the present invention.

In FIG. 1, reference numerals 10, 20, and 30 denote local exchanges A, B, and C, respectively. Local exchange A10-1
Is a connection control device, 2 is a dial signal receiving circuit, 3 is a message sending circuit, 4 is a message table, and 5 is a call waiting circuit.

In FIG. 1 and FIG. 2, A is a terminal of a first caller (call waiting user) (hereinafter, referred to as A terminal), B
Is a terminal of the second party (hereinafter, referred to as B terminal), and C is a terminal of the third party (hereinafter, referred to as C terminal).

In FIG. 1, terminal A and terminal B are exchanges A
When a call is made to the A terminal from the C terminal via the exchange C30 during a telephone conversation with the exchange 10 and the exchange B20, an incoming call display sound is transmitted from the call waiting circuit 5 of the connection control device 1 to the A terminal.

In the subsequent flow, conventionally, the line with the terminal B is held by the hooking signal from the terminal A, and the communication line between the terminal A and the terminal C is set.

[0016] When the hooking is performed again at the terminal A, the line with the terminal C is suspended, the communication line between the terminal A and the terminal B is reset, and the communication is resumed. The C terminal is disconnected by the intention of the A terminal.

In the present invention, as shown in FIG. 2, when the terminal A receives the incoming call display sound, a dial signal can be transmitted in addition to the hooking signal.

When a dial signal is transmitted from the A terminal, the dial signal is received by the dial signal receiving circuit 2, the signal is identified, and a message corresponding to the signal is stored in the message table 4 in advance. The message is extracted and transmitted from the message sending circuit 3 to the C terminal.

Several messages are prepared corresponding to the dial signal.

If the call during the call cannot be interrupted for some reason, for example, if "2" is pressed, the message "I cannot answer because I am currently in the call. Is sent.

The C terminal that has received the message turns off the telephone.

If the A-terminal can interrupt the call with the B-terminal, it is hooked up as usual to
By connecting to the terminal, listening to the message, and further hooking, the call with the terminal B can be continued.

[0023]

As described above in detail, according to the present invention, in addition to the conventional call waiting function, a dial signal transmitted from a subscriber terminal receiving the service is transmitted to a connection control device of an exchange. A receiving circuit, a message table for storing a message corresponding to the signal, and a circuit for transmitting the message are provided, so that when the subscriber receives a ring tone from a third terminal during a call, By pressing the dial corresponding to the message you want to convey to the third terminal subscriber who originated without hooking, the appropriate message is automatically transmitted to the third terminal subscriber without interrupting the call. It has the effect of sending and accepting it, which disconnects the line,
Unnecessary line hold time can be shortened, and the effect that the equipment of the exchange can be used effectively can be expected.

[Brief description of the drawings]

FIG. 1 is a block diagram of one embodiment of the present invention.

FIG. 2 is a flowchart of one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connection control device 2 Dial signal receiving circuit 3 Message sending circuit 4 Message table 5 Call waiting circuit 10 Local exchange A 20 Local exchange B 30 Local exchange C A Terminal of first caller B Terminal of second caller C Three caller terminals

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Shoji Koike 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (56) References JP-A-1-147993 (JP, A) JP-A Sho 63-123255 (JP, A) JP-A-2-256358 (JP, A) JP-A-1-190061 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04M 3/42

Claims (1)

(57) [Claims] A connection request is sent from a third terminal subscriber to one terminal during a call between subscribers of a first terminal and a second terminal via a connection controller of an exchange. If so, it is checked whether or not the subscriber number of the one terminal is stored in the device, and if it is stored, a ring tone is sent to the one terminal that requested the connection. ,
To the third terminal, while transmitting a ringing tone, it is in a state of receiving a hooking signal from the one terminal, and when receiving a hooking signal from the one terminal, the one terminal and the third terminal A dial signal receiving circuit for receiving a dial signal, which is a predetermined dial pulse signal or a dial tone signal, in the connection control device. A message table for storing predetermined message information;
A message sending circuit for sending the message information, wherein the connection control device is connected to one of the first and second terminal subscribers during a call from the third terminal subscriber. When there is a connection request, the connection control device sends an incoming call tone to the one terminal that has made the connection request, sends a ring tone to the third terminal, and sends a ring tone from the one terminal. The dial signal is received by the dial signal receiving circuit, and when a predetermined dial signal from the one terminal is received by the dial signal receiving circuit, the dial signal is identified and the dial signal is identified. Extracting a corresponding message information from the message table and transmitting the message information to the third terminal via the message transmitting circuit. control Method.