JPH04273746A - Isdn telephone system - Google Patents

Abstract

PURPOSE:To identify whether the display state of a display unit is in the input waiting state of a dial operation or in an actual call state by making a call after prescribed time elapses after the dial operation and shifting display to a call display state. CONSTITUTION:When an opposite number is operated by a dial key in an operation part 5, the operated dial number is displayed on a display part 4 and a timer is started. When the time-out of the timer is detected after prescribed time elapses, call state display which is to blinking-display the dial number on the display part 4 is executed and an interface part 2 is caused to execute the protocol processing of the call so as to call an opposite party.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ISDN telephone device that is accommodated in an ISDN network and makes a call to a called party based on an operated dial number.

0002

[Prior Art] As is well known, in the ISDN network called INS Net 64, which has already started service, eight terminals can be connected to one metallic line, which is a conventional analog telephone line. It has become. In other words, two B channels capable of communicating voice and data signals can be secured for one metallic line, and eight terminals can be connected to this line via a DSU via a bus. A configuration equivalent to 208 button telephone devices is possible. By executing a predetermined protocol via the D channel, each terminal performs call origination, call reception processing, etc., and calls and communications are performed with the other party. Note that subaddresses can be set for each of these multiple terminals, so that when a call is received from the network, the call can be received only to a specific terminal. In addition, when making a call to the other party, when you lift the handset and dial the number of the other party, the dialed number that was operated will be displayed on the display one by one, and the final dialing operation will be performed. After a predetermined period of time has elapsed, the calling protocol is executed and the other party is called.

0003

[Problem to be solved by the invention] The above-mentioned conventional ISD
When the N telephone device performs a dial operation to make a call to the other party, the operated dial number is displayed on the display one by one, but it is difficult to check whether the display state on the display is in the state of waiting for input of the dial operation. There is a problem in that it is not possible to distinguish whether a call is actually being made or not, resulting in unnecessary confusion in use.

0004

[Means for Solving the Problems] In order to solve such problems, the ISDN telephone device of the present invention shifts to a call display state when a call is made after a certain period of time has elapsed after dialing. It was designed so that

[0005]

[Operation] When a certain period of time has elapsed after the dial operation is performed, a call is started and the display state changes to a call display state.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of an ISDN telephone device according to the present invention. In the same figure, 1 is this IS
A control unit that controls the DN telephone device, 2 a line interface unit (line I/F unit) that executes protocol processing such as layers 1 to 3 for the ISDN network, 3 a codec circuit, a communication circuit, a tone generation circuit, An analog signal control section consisting of a handset, a speaker, etc., 4 a display section, 5
6 is an ISDN line; 7 is a line termination unit (DSU) that terminates the ISDN line 6; 9 is an AC adapter; 9 is an A
C power supply; 10 is a power supply switching unit; and 11 is a power supply unit that supplies power to each part of the telephone device. In addition, DSU7 and AC
Between the adapter 8 and the ISD configured as above,
Up to eight N telephone devices can be connected in a bus format.

[0007] When an incoming call arrives from the ISDN network via the ISDN line 6, protocol processing regarding the incoming call is executed between the line I/F section 2 and the ISDN network via the DSU 7 and the AC adapter 8. This result is notified to the control unit 1. The control section 1 receives this and displays an incoming call on the display section 4, and also controls the tone generation circuit in the analog signal control section 3 to emit a ring tone from the speaker. Then, when the handset in the analog signal control section 3 is picked up, this information is transferred to the line I/F section 2.
The received call response is transmitted to the line I/F unit 2 and the network, and protocol processing related to the incoming call response is executed, and a response call is made.

[0008] When making a call from an ISDN telephone device, the handset in the analog signal control unit 3 is raised,
When the other party's number is operated using the dial keys in the operation section 5, this information is sent to the display section 4 for display, and is also transmitted to the line I/F section 2. Then, after a predetermined period of time (for example, about 4 seconds) has elapsed, a protocol process related to calling is executed between the line I/F section 2 and the network, and the other party's telephone device is called, and the call is made in response to the other party's response. is started.

Next, FIG. 2 shows the I
2 is a flowchart illustrating the operation of the SDN telephone device when making a call. The operation of the control section 1 of the ISDN telephone device according to the present invention will be explained based on this flowchart. When the handset in the analog signal control unit 3 is picked up and the dialing number is operated using the dial keys in the operation unit 5, the dialed number operated is displayed one by one on the display unit 4, and the dialing in step 50 is Is it input? The judgment of “
Y”. Then, in step 51, a timer for about 4 seconds is activated. Thereafter, in step 52, does this timer timeout? When 4 seconds have elapsed, a timeout of the timer is detected and “Y” is displayed in step 51.
”, the process moves to step 53 and the display section 4
Displaying the call status by blinking the dial number displayed above, and transmitting the operated dial number to the line I/F unit 2 to execute call protocol processing based on this dial number. In step 54, automatic calling processing is executed to call the other party, and the process ends.

[0010] When the call state is entered in this way, the displayed dial number is displayed in a blinking manner to indicate the call state and to distinguish it from the display when dialing is input.

[0011]

Effects of the Invention As explained above, in the present invention, when a certain period of time has elapsed after a dialing operation is performed, the call is started and the display state is changed to the call display state. This makes it possible to distinguish between the input time and the time of input, which is a remarkable effect in this type of ISDN telephone device.

[Brief explanation of the drawing]

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

FIG. 2 is a flowchart illustrating the operation of the embodiment.

[Explanation of symbols]

1 Control section 2 Line I/F section 3 Analog signal control section 4 Display section 5　　　　　Operation section 6 ISDN line 7 DSU

Claims (1)

[Claims] Claim 1: In an ISDN telephone device that is connected to an ISDN line via a line termination device and calls a called party by executing a calling protocol process based on the dialed number of the operated called party, the dialed number is operated. An ISDN telephone device characterized in that it comprises a detection means for later detecting the passage of a certain period of time, and a display control means for shifting to a call display state in response to a detection output of the detection means.