KR0164424B1 - Method of changing of response mode by exclusive line in keyphone system - Google Patents

Abstract

To solve the problem of not being able to change to ring mode when in auto answering mode, grab the private line and enter the extension number to check the call.When you are on the call, listen to the busy tone and enter the normal routine. Check, and when not in the ring mode, puts the call and hears the ringing tone when the ring mode is checked. And when the call state is not answered, the voice mode ID is input to change to the answer mode.

Description

How to change response mode through dedicated line in key phone system

1 is a system diagram applied to an embodiment of the present invention.

2 is a flow chart in accordance with the present invention.

The present invention relates to a method of changing a response mode through a dedicated line in a key phone system.

In the conventional key phone system, the answering mode of the other party's extension can be changed during a call between the extension and the extension. In other words, by changing the ring mode to the answering machine mode or the answering machine mode to the ring mode, the answering mode of the station to which the station is called can be forcibly changed.

However, the response mode of the extension of the other party cannot be changed between the dedicated lines of the key phone system. As a result, when you want to talk directly to the extension of the other system, you are in the ring mode.

Accordingly, an object of the present invention is to provide a method that can be changed to the ring mode when in the auto answer mode.

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

FIG. 1 is a system diagram applied to an embodiment of the present invention. The central processing unit 10 controls call switching by accessing a preset program, controls various services and functions according to the present invention, calls and various functions. RAM (ROM) containing the program and initial service data for execution, and a RAM having a program and volatile data processing area and used as a working memory of the central processing unit 10. : Random Access Memory (30), the subscriber subscriber circuit (40) for supplying a voice current in the voice band to the telephone subscriber of the station, and interfacing between the telephone and the apparatus, and the telephone telephone and the central processing unit (10). Switching between various tone and voice data under the control of the central processing unit 10 and the key subscriber circuit 22 for interfacing the control signal and the voice call. A switching circuit 50, a tone supply circuit 60 generating the various tone signals in response to the control of the central processing unit 10, and supplying the various tone signals to the switching circuit 50; In response to the control of 10), the ring generation circuit 20 for supplying a ring signal in the form of a square wave to the switching circuit 50, and the MFC (Multi Frequency Code) generated from the subscriber of the subscriber subscriber circuit 40 ) And a DTMF receiver 28 for applying corresponding digit data to the CPU 10, and a DTMF transmitter 30 for outputting an MFC signal under the control of the CPU 10; An input / output interface circuit (101) interfacing with the central processing unit (10), and a trunk line, in response to the control of the central processing unit (10), to form a trunk line loop and to interface the signals coming from the trunk line. The trunk line circuit 95 is included.

2 is a flow chart according to the present invention, the first process of holding a dedicated line and inputting an extension number to check the busy state, and when the call is busy in the first process, listening to a busy tone and entering a general routine while not in a call. A second process of checking whether the mobile station is in a mode; a third process of placing a call state when the ring mode is not in the second mode; and checking whether or not a call tone is heard in the ring mode; and a call state when the third process is answered. When the answer is unsuccessful, the fourth step is to change the response mode by inputting the voice mode ID.

Therefore, a specific embodiment of the present invention will be described in detail with reference to FIGS. 1 to 2, wherein the central processing unit 10 of FIG. 1 controls and controls the key phone system according to a set program. 101 interfaces control signals and transmission / reception data between the central processing unit 10 and other circuits. The RAM 30 stores operating program data of the central processing unit 10 and stores various program data generated by program execution. The switching circuit 50 connects the trunk line subscriber circuit 95 and the internal subscriber circuit 40, and the trunk line subscriber circuit 95 controls a general trunk line and a leased line drawn from a telephone exchange station. The extension subscriber circuit 40 is configured to control a plurality of extension subscriber lines. When the key systems A and B configured as shown in FIG. 1 are connected by a dedicated line, the method of the present invention in which an extension of the A system calls an extension of the B system to change the response mode is as follows. Under the control of the central processing unit 10, in the switching circuit 50, an extension (a) of the A system is held in the process (2a), and an extension (b) of the B system is pressed in the process (2b). Check it. If extension b is busy, confirm this in step (2c), and in step (2d), extension a hears a busy tone. However, if the station b is in the idle state in step (2c) and the ring mode is in the step (2f), the station b gives a call signal in step (2g) and the station a hears a ringing tone. If the station b is in the idle state in the process (2f) and the auto answer mode, the stations b and the station a are automatically in the call state in the process (2h). If you hear the above call tone or do not answer, press the answer mode ID in (2i) in the call state and the ring mode changes to auto answer mode in (2j) and the auto answer mode changes to ring mode. Here, the auto answer mode is the loudspeaker state.

That is, the answer mode change is not performed when the other party is busy, the other party is answering (when picking up the handset or pressing the answer button).

As described above, there is an inconvenience of not being able to force the automatic answering mode due to the ring mode because the user wants to talk directly to the extension of the counterpart system. However, the automatic answering mode has the advantage of changing to the ringing mode.

Claims (1)

An extension calling method through a dedicated line of a key phone system, comprising: a first process of checking a call by holding an exclusive line and entering an extension number; When the second process to check whether the ring mode, and when the second mode is not in the ring mode and the call state and ring mode in the ring mode to hear a ring tone and check whether the response, and when the third process is answered 4. A method of changing a response mode through a dedicated line in a key phone system, characterized in that it is made in a call state and fails to answer, a fourth process of changing the answer mode by inputting a voice mode ID.