JPH0936983A - Call back correspondent terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable discrimination call back from the normal incoming call by providing a non-ringing call signal detecting means at a terminal to receive call back and making the side of an exchange into a system to use a non-ringing signal for call back. SOLUTION: A caller 21 accesses an information center 22 and after the end of communication, the state of disconnecting a telephone set from the exchange is provided. When the information center 22 next performs call back, processing for calling a callee terminal 23 requesting the call back from the information, etc., of the caller 21 from an information center terminal 24 is performed. At such a time, the information center terminal 24 performs call origination showing non-ringing call to an exchange 27. The exchange 27 connects a non-ringing tone sending track 26 to the callee terminal 23. The callee terminal 23 detects a non-ringing tone signal and performs responding processing, and the exchange 27 performs the connecting processing of the callee terminal 23 and the information center terminal 24. Besides, in the case of normal connecting request, the exchange 27 calls the callee terminal 23 by a ring back tone sending track 25 and the callee terminal 23 performs normal incoming call processing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal in a telephone communication system.

[0002]

2. Description of the Related Art FIG. 3 is a diagram showing a connection configuration of a caller terminal and a callee terminal connected via a switching network, and at the time of making a call back and at the time of receiving a call back. It is the figure which represented the function of the telephone concretely. This will be specifically described below with reference to the drawings.

In FIG. 3, 1 is a caller, 2 is an information center, 3 is a callee terminal, 4 is an information center terminal, 5 is a ringing tone sending trunk, and 6 is an exchange. In FIG. 3, the caller 1 accesses the information center 2, and after the communication is completed, the terminal or telephone is disconnected from the exchange. Next, when the information center 2 calls back, the information center terminal 4 (equivalent to the information center 2) performs a process of calling the called party terminal 3 which requested the callback from the information of the caller. At this time, the exchange 6 connects to the ring back tone transmission trunk 5 and the subscriber line of the callee terminal 3 to transmit a ring back tone signal. The called party's terminal 3 detects the calling signal, sounds the ringing tone of the terminal, and informs the person near the called party's terminal. When the ringer of the called party terminal is picked up after knowing the ringing of the called party terminal 3, the exchange 6 uses the ringing tone sending trunk 5 to send the information center terminal 4 which is the calling party.
Change the connection with and set the communication status. The callee terminal 3 communicates with the information center terminal 4, determines that it is a callback process of a previously issued communication according to the content of the communication, and performs a process corresponding to the callback.

FIG. 4 is a functional block diagram of a general telephone set, showing the functions of the callee terminal 3 that receives the call back described in FIG. In the figure, reference numeral 11 is a subscriber line, 12 is an incoming call detection function, 13 is an outgoing call function, 14 is a telephone control unit, 15 is an acoustic conversion function unit, 16 is a data transfer function unit, 17 is a control line, and 18 is a control line. Indicates.

In the figure, when the exchange 6 is sending a calling signal to the subscriber line 11 of the called party terminal 3 through the ringing tone sending trunk 5, the incoming call detecting function 12 detects the calling signal and the control line 18 The call detection is transmitted to the telephone control section 14, and the telephone is ringed under the control of the telephone control section 14. After ringing, the called party picks up the receiver and the sound conversion function unit 1
The call is made according to 5.

[0006]

As described above with reference to FIGS. 3 and 4, when an information center or an information provider who makes a callback is accessed and waiting for a callback, the switching network is used. When there is an incoming call, there is a disadvantage that it is not possible to determine whether the incoming call is a callback or an incoming call to the called party simply by calling the telephone or the like and checking the communication contents. Further, when sending information or the like to a call-back partner, there is a drawback that after accessing the information center, it is necessary to wait in front of the terminal until a call-back call comes.

An object of the present invention is to solve the above-mentioned problems, and an object thereof is to be able to distinguish between the case of a call back and the case of an incoming call.

[0008]

In order to achieve the object of the present invention, a terminal receiving a call back, a functional section for detecting a call signal from the switching network side, and a conventional call signal detecting function, A non-ringing call signal detection function is provided so that the exchange side can make a call back call from an information center to a terminal so that it uses a non-ringing signal, and ordinary telephone calls and callback incoming calls are received. It makes it possible to distinguish. On the other hand, when the incoming call receives a silent ringing signal, it sends out a signal that controls the operation so that it operates differently from a general incoming call without ringing, and the call-back processing is performed without human intervention. It allows you to do it.

Non-ringing call signal detecting means according to the present invention,
By providing the control mechanism on the terminal side, it is not necessary to make a determination after communication for a call incoming to a terminal waiting for a callback, or to deal with the call back by human hands.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram for explaining a terminal connection status via a switching network according to the present invention, and FIG. 2 is a functional block diagram of a terminal according to the present invention. A detailed description will be given below with reference to the drawings.

In FIG. 1, reference numeral 21 is a caller, 22 is an information center, 23 is a callee terminal, 24 is an information center terminal, 25 is a ringing tone sending trunk, 26 is a ringing ringing tone sending trunk, and 27 is an exchange. Show.

In FIG. 1, the sender 21 is an information center 22.
Access and then disconnect the terminal or telephone from the exchange after the communication is completed. When the information center 22 calls back next time, the information center terminal 24 (information center 22
From the information of the caller 21 and so on, the process of calling the callee terminal 23 that requested the call back is performed. At this time, the information center terminal 24 sends a call to the exchange 27 to call without any sound. The exchange 27 connects the non-ringing ring back tone transmission trunk 26, which determines the number of the called party's terminal 23 and makes a non-ringing signal call, to the subscriber line connected to the called party's terminal 23.
After the non-ringing ringing signal emitted from the non-ringing ringing tone transmission trunk 26 is detected by the called party terminal 23, the called party terminal 23 performs a response process to the exchange 27, and the switching center 27 performs a connection process with the called party terminal 23 and the information center terminal 24. . In addition, the information center terminal 2
In the case of a normal communication connection request that is not a callback from 4, the exchange 27 calls the callee terminal 23 through the ringing tone sending trunk 25, and after the callee terminal responds, the caller and the callee are connected. The callee terminal 23 performs normal call reception processing.

FIG. 2 is a function obtained by adding a non-ringing call signal detection function 40 to the function described in FIG. 4, which will be specifically described below. In the figure, reference numeral 31 is a subscriber line, 32 is an incoming call detection function,
33 is a calling function, 34 is a telephone control unit, 35 is a sound conversion function unit, 36 is a data transfer function unit, 37 is a control line, 38
Is a control line, 40 is a non-ringing call signal detection function, and 41 is another device interface line.

In the operation using the silent ringing tone transmission trunk described in the explanation of FIG. 1, the exchange 27 sends a silent ringing call signal from the silent ringing trunk 26 to the called party's terminal through the subscriber line 31. When the non-ringing call signal detection function 40 detects the non-ringing call, the callee terminal transmits the non-ringing call to the telephone control unit 34 through the control line 38, and the telephone control unit 34 controls the exchange 27 to be switched. Returns the response signal,
After the connection between the information center terminal 24 and the callee terminal 23, processing for exclusive use of silent ringing, for example, processing for performing data transfer using the data transfer function unit 36 is executed. After that, when the communication between the information center terminal 24 and the callee terminal 23 is completed, the termination processing is performed with the exchange 27 under the control of the telephone controller 34.

The data transfer function unit 36 can be connected to another control device such as a personal computer using the other device interface line 41 to have a function of controlling data transfer.

The non-ringing call signal used herein means a signal other than a normal call signal.

[0017]

As described above, according to the present invention,
Since it is possible to determine whether the call is a callback call or a general call after the call back request, it is not necessary to manually determine each incoming telephone call, and therefore it is necessary to manually arrange until the callback call arrives. Nor. Also, a device that can automatically respond to a callback call can be constructed, and the system can be economically constructed.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a terminal connection status via a switching network according to the present invention.

FIG. 2 is a functional block diagram of a terminal according to the present invention.

FIG. 3 is a diagram of a conventional case showing a connection configuration at the time of callback.

FIG. 4 is a diagram of a conventional case showing functions of a telephone such as a terminal.

[Explanation of symbols]

 21 Caller 22 Information Center 23 Recipient Terminal 24 Information Center Terminal 25 Ring Tone Sending Trunk 26 No Ring Ring Tone Sending Trunk 27 Switch 31 Subscriber Line 32 Call Detection Function 33 Calling Function 34 Telephone Control Section 35 Acoustic Conversion Function Section 36 Data Transfer function part 37 Control line 38 Control line 40 Silent ringing signal detection function 41 Other device interface line

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Tomohiro Yamada 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation

Claims (1)

[Claims] 1. A terminal in a telephone communication system having a communication form in which a telephone terminal is used to make a call to an information center or a specific called party, and a caller is called back from the information center or a specified called party after communication. When the terminal side communicates with the person calling back, a callback occurs after the end of communication and a means to store the information sent to the callback destination on the terminal side, and then to the terminal that requested the callback communication When the ringing signal is a ringing ringing signal, it is judged that the communication is from the other party calling back, and the communication processing corresponding to the callback is performed. It is judged that it is not an incoming call,
A call-back compatible terminal having a non-ringing call signal detecting means for performing a call process from an ordinary exchange.