KR950003720B1 - Isdn telephone system - Google Patents

Abstract

The method effectively identifies the call specification for ISDN telephone. The device includes a central processor (100) which controls the total function of telephone like hook, premitive, and call control processing, a ROM (20), a RAM (30) which temporarily saves the data, a hook interface means which detects the hook on/off states, an analog interface means (50) which provides the tone and voice signals. The method includes a 1st step which detects the hook on/off states, a 2nd step which forms the corresponding premitive, a 3rd step which requires the premitive process, and a 4th step which executes the call control function.

Description

Implementation Method of Enbloc Transmission for Call Setup of ISDN Telephone

1 is an exemplary signal flow diagram for a conventional call setup.

2 is a block diagram schematically showing the configuration of an ISDN telephone to which the present invention is applied.

3 is a block diagram schematically showing a program block for implementing the present invention.

4 is a flow chart of the implementation of the present invention.

5 is an exemplary signal flow diagram for call setup in accordance with the present invention.

* Explanation of symbols for main parts of the drawings

10: central processing unit 20: ROM

30: RAM 40: hook interface

50: analog interface unit 100: hook processing unit

200: primitive processing unit 300: call control unit

400: operating system

The present invention relates to an information transmission method required for call setup of an ISDN telephone corresponding to an ISDN terminal, and more particularly, to a method for implementing an inbloc transmission method.

In ISDN multifunctional telephones, various information transmission schemes are used. However, a dual ISDN exchange transmits all the information required to set up a call in a setup message.

In the conventional ISDN telephone, even if the user does not actually dial, as shown in FIG. 1, when hooked off, the ISDN telephone is configured to send and receive various messages for call setup. Rather, even if the telephone is put down by entering an incorrect number, although the message is transmitted and the call is not actually made, the exchange has to deal with the call.

The present invention has been made to eliminate the above problems, by using a telephone primitive (phone primitive) to listen to the dial tone to the user without receiving a message from the exchange side to enter the incoming subscriber number and the user The purpose of the present invention is to provide a method of implementing an inbloc transmission method for call establishment of an ISDN telephone that effectively attempts to set up a call so that no message is transmitted to the exchange until a confirmation key is pressed.

The present invention, the central processing means for controlling the overall function of the phone by using a program that includes a hook processing, primitive processing, call control function to achieve the above object, a ROM in which the program is stored, and temporarily storing data A method of attempting to set up a call of an ISDN telephone having a RAM, a hook interface means for detecting a hook on / off state, and an analog interface means for providing various tone and voice data to a user. Detecting a on / off state; A second step of configuring a corresponding primitive when the result of the first step is a hook-off state or a hook-on state; A third step of requiring the primitive to be processed in a telephone; And a fourth step of performing a call control function corresponding to the phone itself if the requested primitive is a hook off primitive or a hook on primitive.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram schematically showing a hardware configuration of an ISDN telephone for applying the present invention, in which 10 is a central processor, 20 is a ROM, 30 is a RAM, 40 is a hook interface, and 50 is an analog interface. .

As shown in the figure, an ISDN telephone to which the present invention is applied includes a central processing unit 10 for controlling overall functions, a ROM 20 storing a program for operating and controlling the telephone, and a RAM for temporarily storing data ( 30), a hook interface unit 40 for detecting a hook on / off state of the telephone, and an analog interface unit 50 for providing a variety of tones and voice data to the user.

3 is a block diagram illustrating a program for implementing the present invention. As shown in the figure, a hook processing unit 100 for detecting a hook on / off of a telephone and constructing a message is transmitted from the hook processing unit. A primitive processing unit 200 for proceeding with a protocol by interpreting a primitive, or transmitting primitives for other processing to a call control unit, and a call controller for controlling various tones, channel accesses, and display information provided to a user ( 300) and an operating system 400 for controlling the overall function of the system and transmitting messages between OSI hierarchies.

This will be described in more detail as follows.

Hook off of the phone is detected through the corresponding port of the hook interface unit 40, the central processing unit 10 reads the port to drive the program for the processing, the hook processing unit 100 reads the port After constructing the primitive, the primitive processor 200 transmits the primitive to the primitive processor 200. The primitive processor 200 receives and processes all primitives transmitted from each layer, and receives the primitives transmitted from the hook processor 100. Send to 300.

The call controller 300 drives the analog interface unit 50 to provide a dial tone to a user, and outputs display information for starting dialing to a display unit (not shown). do.

In the present invention, the user can enter information only after the operation is completed.

4 is a flowchart of the present invention.

As shown in the drawing, the present invention first detects the hook on / off of the phone by the hook processing unit 100, and if the hook-off state (11) configures a primitive indicating a hook off (12), the primitive processing unit 200 Transmit (13).

The primitive processor determines whether the transmitted primitive is a hook off primitive (14), and transmits the transmitted primitive to the call control unit only when the primitive is a hook off primitive (15).

The call controller then generates and provides a dial tone to the user, and drives display information to start dialing (16). Thus, by entering the information from the user (17), the performance of the present invention is terminated, after which the user enters the called subscriber number, and then confirms the key (in the embodiment of the present invention, "* "It is preferable to use the key.", The terminal terminal identifier (TEI) signal is transmitted to the ISDN exchange side from then on so that the ISDN exchange proceeds to set up the call and is unnecessary as in the conventional case. Remove the load.

On the other hand, if the hook-on state is detected in the hook processing unit 100 (21) to configure a prompt indicating the hook on (22) and transmits to the pre-tip processing unit 200 (23).

Then, the primitive processing unit checks the type of the transmitted primitive (24) and transmits the primitive to the call controller 300 only when the hook-on primitive is used (25), thereby removing the dial tone applied from the call controller and displaying the display unit. Is switched to the initial screen state (26) to end.

Figure 5 shows an exemplary signal flow diagram for attempting call setup in accordance with the present invention performed as described above. Contrast this with Figure 1 it can be easily seen that the significant improvement compared to the conventional case. In FIG. 1, reference numerals 'SABME' and 'UA' are parameters of Q921. Recommended by CCITT, and SABME (Set Asynchronous Balanced Mode Extended) is an extended asynchronous balanced mode setting signal, and UA (Unnumbered Acknowledgement) is Password confirmation signal.

Therefore, the present invention greatly reduces the load of the ISDN switch, increases the operational efficiency of the network, and has the effect of increasing the call setup efficiency of the ISDN switch.

Claims (3)

Central processing means 100 for controlling the overall functions of the phone by using a program that includes hook processing, primitive processing, call control functions, ROM 20 in which the program is stored, and RAM for temporarily storing data ( 30), a hook interface means 40 for detecting a hook on / off state, and an analog interface means 50 for providing various tone and voice data to a user. A first step of reducing the hook on / off state in the phone; A second step of configuring a corresponding primitive when the result of the first step is a hook-off state or a hook-on state; A third step of requiring the primitive to be processed in a telephone; And a fourth step of performing a call control function corresponding to the phone itself if the requested primitive is a hook-off primitive or a hook-on primitive. 2. The method of claim 1, wherein the fourth step comprises: a first step of providing a dial tone to a user if the requested primitive is a hook off primitive; And a second process of driving display information for dialing. The method of claim 1, wherein the fourth step comprises: a first step of removing the applied dial tone if the requested primitive is a hook on primitive; And performing a second process of converting the display information into an initial state.