JPH0486144A - Isdn terminal equipment - Google Patents

Abstract

PURPOSE:To allow the location of a destination to be recognized by displaying the location of the destination at the arrival of a call in the ISDN terminal equipment. CONSTITUTION:A call control message through a D-channel is inputted to a central processing unit 19 via a line I/F circuit 12 from a network at the arrival of an incoming call. The central processing unit 19 sends a replay to a call control message to the network and extracts a dial number 20a among received call control messages, converts the code of the dial number 20 into a number and outputs it to a display device 6 and recognizes a code representing a toll station number from the dial number 20. The toll station number code is used to retrieve a district name storage section 21 to extract a district name corresponding to the received toll station number and it is displayed on the display device 6. Thus, the operation convenience is enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates in particular to destination number display of an ISDN terminal device connected to an ISDN network or integrated digital service network.

[Prior Art] FIG. 3 is an external view of a conventional ISDN terminal such as that shown in the NTT Netmate D64 instruction manual.

In the figure, (1) is the telephone (ISDN terminal) main body 2 (
2) is the handset, (3) is the handset (2)
It is fixed to the side of the main body (1) with a stand.

(4) is a curl code, (5) is a dial key, and (6) is a display such as an LCD.

FIG. 4 is a block diagram showing the conventional ISDN terminal.

In FIG. 4, (11) is an ISDN line that connects a nine-line interface (I/F) circuit (12) and a DSU (line termination unit).

(13) is a switch unit to which this line I/F circuit (12) is connected by a connection line for two channels (Bl, 82 channels); (14) is a codec to which the switch unit (13) is connected; (15) is the switch part (
13) is a data interface (I/F) for connecting to a DTP (data terminal), and (16) is an audio circuit for connecting the handset (2) to the codec (14).

(17) is the I10 controller connected to the dial key (5) and ringer (18), (19) is the central processing unit connected to the display (6), I10 controller (17) and line I/F circuit (12) do.

Next, the operation will be explained.

The signal transmitted by the ISDN line (11) is 1 line I.
The /F circuit (12) separates the signal into a D channel control signal and a B channel information signal, and the B channel information signal is sent to a switch section (13).

The switch unit (13) separates the signal into a B1 channel and a B2 channel, and the central processing unit (19) distributes the signal to a codec (14) and a data I/F (], 5).

The B channel information signal connected to the codec (14) is digital-to-analog converted (or analog-to-digital converted) by the codec (14) and used for voice communication using the handset (2) through the audio circuit (16). .

First, the B channel information signal connected to the data I/F (15) is used for communication with the DTE (data terminal) via the data I/F (15).

The I10 controller (17) controls the central processing unit (
The ringer (18) is driven by a command from the dial key (19), and when a first call is made, key information from the dial key (5) is sent to the central processing unit (19).

In addition, the 1 display (I4) is the central processing unit (
19), the destination number sent from the dial key (5
) will be displayed in the order in which they were entered.

The central processing unit (19) then operates the line I/F circuit (12).
) to the network using the D channel.

When a call is received, a call control message shown in FIG. 5 is sent from the network on the D channel.

The central processing unit (19) decodes the call control message obtained from the network via the line I/F circuit (12).

The calling number (20a) in the call control message is displayed on the display (6).
Control the display with .

Figure 6 shows the display contents of the display (6) when a call is received.
(20b) is the calling number q (20a) in the call control message.
) shows how the code is converted into numbers and displayed.

And the central processing unit (19) is the ■10 controller (
17) to drive the ringer (18).

[Problem II to be Solved by the Invention] Since the conventional ISDN terminal device is configured as described above, when a call is received, it is easy to know the location of the caller from the destination number displayed on the display. There was a problem with this.

This invention was made to solve the above-mentioned problems, and its object is to provide an ISDN terminal device that can know the location of the other party.

[Means for Solving the Problems] The ISDN terminal device according to the present invention is provided with a place name storage unit that stores place names corresponding to area codes, and also stores place names that correspond to area codes. It searches for and displays place names in the section.

[Operation] Since the ISDN terminal device according to the present invention displays the location of the other party when a call is received, it is possible to obtain a terminal device that is easy to use.

[Example] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In Figure 1, (2), (5), (6), (
11) to (19) is similar to the above conventional example.

(21) is a place name storage unit that stores place names corresponding to area codes, and is connected to the central processing unit (19).

Next, the operation will be explained.

When a call is received, a call control message shown in FIG. 5 is input from the network via the D channel to the central processing unit (19) via the line I/F circuit (12).

The central processing unit (19) sends a response to the call control message to the network, extracts the calling number (20a) from the received call control message, converts the code of the calling number (20a) into a number, and displays it. At the same time, the code representing the area code is recognized from the calling number (20a).

The place name storage unit (21) is searched using this area code and the place name corresponding to the received area code is retrieved and displayed in 6).

Figure 2 shows the display contents of the display (6) (22).
is the displayed place name.

[Effects of the Invention] As described above, according to the present invention, a place name storage unit is provided that stores place names corresponding to area codes, and the place name is displayed together with the calling number after searching with the calling number sent from the network, making it easy to use. This has the effect of providing an ISDN terminal device with good performance.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an ISDN terminal device according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing incoming call display contents in the device of the present invention, and FIG. 3 is an external view of a conventional ISDN terminal device. FIG. 4 is a block diagram showing its configuration, FIG. 5 is a diagram showing the configuration of a call control message, and FIG. 6 is an explanatory diagram showing the contents of an incoming call display in a conventional device. In the figure, (6) is a display, (11) is an ISDN line, and (21) is a place name storage unit. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] An ISDN digital network terminal device is equipped with a display that displays a calling number, which is one of the information elements of a call control message sent from the network, and a place name storage section that stores a place name corresponding to an area code, An ISDN terminal device, characterized in that it searches for a place name in the place name storage section using a code group representing a station, and displays the searched place name on the display.