JP2968635B2 - ISDN telephone communication method and apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ISDN telephone communication method and an ISDN telephone apparatus.

[0002]

2. Description of the Related Art Conventionally, a telephone device using ISDN technology has a function of knowing the telephone number of a calling side on a receiving side as a service not charged as character information in voice communication. In the case of using a service for transmitting character information from a user to a caller, another call setting is made and a separate fee is charged.

[0003]

As described above, in the telephone device using the conventional ISDN technology, the character information as a service that is not charged in voice communication allows the receiving side to know the telephone number of the calling side. Because there was only a function, for the means for the calling side to know the information such as the telephone number of the called side and the name of the other party, pay the extra charge and send the text information, or check the voice during the call with the called side There was no alternative but to do.

[0004]

An ISDN telephone communication method according to the present invention uses a B channel immediately after connecting a digital telephone device on a calling side and a digital telephone device on a receiving side via an ISDN network, and provides the digital telephone device on the receiving side in advance. Set the character code
The ISDN telephone apparatus according to the present invention is configured such that the digital telephone apparatus on the receiving side transmits the digital telephone apparatus on the transmitting side to the digital telephone apparatus on the transmitting side and displays the digital telephone apparatus on the transmitting side. In the device,
Means for storing a predetermined character code, means for transmitting the stored character code to the transmitting side via the ISDN interface B channel, means for switching between the character code and voice, and data received via the B channel The configuration includes means for switching between character codes and voices and distributing them internally, and means for displaying the distributed and stored character codes.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. An ISDN telephone device according to the present invention includes a line termination circuit 1 for connecting to an ISDN basic interface,
A line control circuit 2 for controlling a communication procedure with the ISDN basic interface and controlling the operation of the telephone device in connection with network information from the ISDN basic interface;
A B-channel switch 3 for switching the B channel to a voice conversion circuit or a storage circuit depending on whether voice or character code is transmitted or received using the B channel of the ISDN basic interface; Converts voice information to be transmitted / received into analog signals, further amplifies them and converts them into a form that can be converted into voice by the handset, or attenuates the analog signal of voice sent from the handset and transmits it from the B channel. A voice conversion circuit 5 for performing an operation, a display circuit 6 for displaying a character code transmitted from the line control circuit 2 or the storage circuit, and a conversion of an analog signal transmitted from the voice conversion circuit 5 into a voice or a voice signal. And a handset 10 for converting a signal into an analog signal and transmitting the signal to the voice conversion circuit 5, and operating when starting a call or responding to an incoming call The hook switch 7 that, with the key pad 8 for entering the phone number of the receiving terminal in the case of transmission,
It has a function of receiving a character code sent from the B channel at the time of transmission and converting it into a format to be displayed on the display circuit 6 or transmitting the character code to the B channel at the time of an incoming call by inputting the character code in advance. A storage circuit 4;
And a tone generator 9 for emitting an identification sound to the handset when the receiving telephone device is waiting for a response at the time of calling.

FIGS. 2 and 3 show an apparatus using the present invention in an ISD
It is a flowchart at the time of connecting to both ends of the N basic interface and making a call from an arbitrary telephone device.

The telephone apparatus of the present invention having the structure shown in FIG. 1 will be described with reference to FIG. Note that FIG. 1 shows only the telephone device on the calling side and is omitted from the drawing because the receiving side has the same configuration. When the handset 10 is picked up and the hook switch 7 is turned off, the line control circuit 2 is notified that the hook switch 7 has been turned off. As a result, the line control circuit 2 issues an instruction to the B-channel switch 3, connects the tone generator 9 and the voice conversion circuit 5, further generates a dial tone from the tone generator 9, and transmits a dial tone from the handset 10. Is notified that the keypad 8 has entered a state of waiting for input of the telephone number of the other party.

In this state, the telephone number of the other party input from the keypad 8 is transmitted to the line control circuit 2, passed through the line termination circuit 1 to the ISDN basic interface, and the ISDN basic interface performs call setting.
Further, an instruction is issued to the B channel switch, and the B channel is moved to the storage circuit 4 side.

The telephone equipment on the receiving side recognizes the incoming call through the line terminating circuit 1 and recognizes the incoming call in the line control circuit 2 and displays a display prompting a response on the display circuit 6. It indicates to the receiving-side operator that the user has entered the waiting state, and sends the ISDN to the calling-side telephone device.
Informs that calling is in progress via the basic interface. When a ringing tone is generated from the telephone device on the receiving side, the operator on the receiving side that recognizes the incoming call picks up the handset 10 and turns off the hook switch 7.

The line control circuit 2 recognizing that the hook switch 7 has been turned off informs the calling side telephone device of the response via the ISDN basic interface, and further issues an instruction to the B channel switch 3. The B channel is moved to the storage circuit 4 side, and preparation for transmitting a character code from the storage circuit 4 is performed.

When the line control circuit 2 determines that a response has been received from the network, the telephone device on the receiving side issues a request to the storage circuit 4 to output a character code to the B channel, thereby storing the data. The circuit 4 transmits a character code using the B channel. The character code in this case is HD
When the character code is transmitted to the calling telephone device in the format surrounded by the LC flag and the character code is transmitted, the B channel switch 3
To connect the B channel to the voice conversion circuit 5 to prepare for voice communication.

[0013] The line control circuit 2 of the calling telephone device, which has been notified of the response from the called telephone device, receives the ISDN
A response confirmation is returned to the basic interface through the line termination circuit 1 and the B channel switch 3 is controlled to
When the channel and the storage circuit 4 are connected, and the storage circuit 4 notifies the line control circuit 2 that the character code sandwiched by the HDLC transmitted from the telephone device on the receiving side is received,
The line control circuit 2 switches the B channel switch 3 to connect the B channel to the voice conversion circuit 5 to stop the ring tone generated from the tone generator 9 and prepare for a voice call. The character code on the receiving side input from the B channel to the storage circuit 4 is sent from the storage circuit 4 to the display circuit 6 and displayed.

The above operation is performed, and the operators at both ends of the telephone device enter into a call.

[0015]

As described above, the present invention provides an ISDN
Since the character code is transmitted from the receiving side to the B channel on the circuit switch immediately after connection between the telephone devices connected to the network, and the character code is received and displayed on the calling side, the calling side communicates. It is possible to confirm whether or not the user is connected to the desired party, and it is not necessary to pay a separate fee for sending the character information because the character information is charged as a part of the voice.

[Brief description of the drawings]

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

FIG. 2 is a flowchart illustrating an operation example when the present invention is used.

FIG. 3 is a flowchart showing an operation example when the present invention is used.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Line termination circuit 2 Line control circuit 3 B channel switch 4 Storage circuit 5 Voice conversion circuit 6 Display circuit 7 Hook switch 8 Keypad 9 Tone generator 10 Handset

Claims (2)

(57) [Claims] 1. Using a B channel immediately after connecting a digital telephone device on a calling side and a digital telephone device on a receiving side via an ISDN network, a character code preset in the digital telephone device on the receiving side is transmitted to the digital telephone on the receiving side. An ISDN telephone communication method, comprising transmitting from a device to the digital telephone device on the calling side and displaying the digital telephone device on the calling side. 2. A digital telephone device connected to an ISDN network, means for storing a predetermined character code, means for transmitting the stored character code to a transmitting side via a B channel of an ISDN interface, An ISDN telephone comprising: means for switching between voice and voice; means for switching data received via a B channel between character code and voice to distribute the data therein; and means for displaying the distributed and stored character code. apparatus