KR100202139B1 - Method for automatic disconnection of communication line in a telephone - Google Patents

Abstract

[Technical field to which the claimed invention belongs]

It is a technology that automatically cuts the call path after the set time has elapsed when the handset is wrongly placed in the telephone device.

[Technical Problem to Solve]

It solves the problem of removing the voice and tone detection unit from the telephone terminal device and stopping the service according to the condition of the exchange.

[Summary of the solution of the invention]

When the hook switch is hooked off, a call path is formed and when the set time elapses, the call path is cut so that incoming calls can be made even if the handset is misplaced.

[Important Uses of the Invention]

Applies to telephone terminal equipment.

Description

Automatic cutting method by telephone call device

1 is a block diagram of a conventional telephone terminal device.

2 is a block diagram of a telephone terminal device according to the present invention.

3 is a control flowchart for automatically cutting a call path according to the present invention.

The present invention relates to a method for automatically cutting a call path in a telephone terminal device, and more particularly, to a method for automatically cutting a call path after a predetermined time when a handset is placed wrong in the telephone terminal device.

1 is a block diagram of a conventional telephone terminal device, in which the key input unit 10 generates a dial key and various function key signals. The control unit 12 controls overall operations of the telephone terminal, and controls to automatically turn off the speakerphone call in response to dance and busy tone detection. The display unit 14 displays the telephone number and each state under the control of the control unit 12. The voice and tone detector 20 is connected to a telephone line and detects the voice and various tone signals received from the telephone line, converts them into digital data, and provides the same to the controller 12. The speech circuit 18 connects or cuts the call loop of the telephone line under the control of the controller 12, and connects the telephone line with the handset. The hook-open detection unit 16 detects the hook-off state in accordance with the on / off of the hook switch and provides it to the control unit 12.

By the way, the control unit 12 controls the speech circuit 18 when the hook-off switch is turned on and the hook-off state is detected from the hook-off detection unit 20 so as to form a communication path. Thus, a call path is formed and dials to receive a busy tone when the other party is busy or when the call is terminated. At this time, the control unit 12 cuts the communication path by controlling the speech circuit 18 when detecting the silent, warning sound or busy tone from the voice and tone detection unit 16 for a predetermined time.

The conventional telephone terminal device has a problem in that the cost is increased because the voice and tone detection unit is configured, and the standard of the voice and tone detection unit is not fixed, so the service is not provided according to the conditions of the exchange. There was a problem that does not occur.

Accordingly, an object of the present invention is to provide a method for automatically cutting a call path to automatically cut a call path when a set time elapses after being hooked off from a phone terminal device to solve the above problem.

It is another object of the present invention to provide a method for automatically cutting a call by removing hardware for a voice and tone detector from a telephone terminal device and automatically cutting the call path when a set time elapses in a hooked-off state. have.

It is still another object of the present invention to provide a method for automatically cutting a call by automatically cutting a call when a set time elapses after forming a call regardless of the condition of an exchange in the telephone terminal device.

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

2 is a block diagram of a telephone terminal apparatus according to the present invention, wherein the key input unit 10 generates various function key signals such as a dial key and an automatic cutting function key through a call. The control unit 12 controls the overall operation of the phone terminal, and automatically cuts the call path after a predetermined time elapses after the call path is formed when the call cutting function is set from the key input unit 10. To control. The display unit 14 displays the automatic cutting function setting release state, the telephone number, and each state under the control of the control unit 12. The hook-off detection unit 16 detects the hook-off state according to the on / off of the hook switch and provides it to the control unit 12. The speech circuit 18 connects or cuts the call loop of the telephone line under the control of the controller 12, and connects the telephone line with the handset.

3 is a control flow diagram for automatically cutting the call path according to the present invention, the process of setting or releasing the automatic cutting function whenever the automatic cutting function key is input when the hook switch is not hooked off, and the hook switch Forming a call path when the hook is off, detecting whether an automatic cutting function key is input after forming the call path, and cutting a call when the hook switch is hooked on after forming the call. And performing a dialing when a dial key is input after the communication path is formed, transmitting a warning sound when a predetermined time has elapsed after forming the communication path, and setting a time after transmitting the warning sound. When the elapsed time, the channel is cut.

The operation of the preferred embodiment of the present invention will be described in detail with reference to FIGS. 2 and 3 described above.

The control unit 12 checks in step 101 whether the hook-off state is detected from the hook-off detection unit 16 and proceeds to step 102 if it is detected as the hook-off state. In step 102, the control unit 12 checks whether the auto cutting function key signal is input from the key input unit 10. If the auto cutting function key is input, the control unit 12 toggles each time the auto cutting function key is input. Turn the cutting function on or off. When the hook switch is hooked off in step 101, the control unit 12 controls the speech circuit 18 to form a communication path in step 104. Thereafter, in step 105, the controller 12 checks whether the auto cutting function key signal is input from the key input unit 10, and proceeds to step 106 when the auto cutting function key is not input. In step 106, the manufacturing unit 12 checks whether the hook-on state is detected from the hook-off detection unit 16, and cuts the communication path when the hook-on state is detected. However, if the hook-on state is not detected, the flow proceeds to step 108 to check whether the dial key is input from the key input unit 10. If the dial key is input, the flow proceeds to step 109 to perform dialing. However, if the auto-cleavable key is input in step 105, the controller 110 proceeds to step 110 to clock the timer to 0 and proceeds to step 111. In step 111, the control unit 12 checks whether the hook-on state is detected from the hook-off detection unit 16. If the hook-on state is detected, the controller 12 proceeds to step 117 to cut the call path. However, if the hook-on state is not detected, the process proceeds to step 112 and checks whether a dial key is input from the key input unit 10. If a dial key is input, the process proceeds to step 113 to perform dialing and returns to step 110. If the dial key is not input in step 112, the process proceeds to step 114. If the preset time, e.g., 30 minutes has elapsed, the process returns to step 111. If 30 minutes have not elapsed, the process returns to step 111. do. In step 115, the controller 12 generates a notification and transmits a warning sound through the speech circuit 18 to a speaker (not shown). Then, in step 116, the control unit 12 checks whether the preset time for automatic cutting of the call, for example, 30 minutes and 30 seconds has elapsed, and returns to step 111 if 30 minutes and 30 seconds have not elapsed. If the second has passed, proceed to step 117 to cut the channel.

As described above, the present invention generates a beep when the set time elapses after the call path is formed in the phone terminal device, and blocks the call when the time set for automatic cutting of the call again after the beep is generated, Even if misplaced, it is possible to make a call by cutting the call path after the set time, and to reduce the cost by simplifying the hardware by eliminating the voice and tone detection unit, and it is serviced by the set time regardless of the exchange condition. There is an advantage to prevent.

Claims (5)

A method for automatically cutting a call path of a telephone terminal device, the method comprising: forming a call path when a hook switch is hooked off; checking whether an automatic cutting function key is input after forming the call path; When the automatic cutting function key is input, a process of starting counting a preset time set for automatic cutting into a call, and if the set time elapses, cuts the formed call path. Automatic cutting by phone call device. The telephone terminal apparatus according to claim 1, further comprising a step of cutting the formed communication path when the hook switch is hooked on again after forming the communication path corresponding to the hook switch hook-off. How to automatically cut into currency. The telephone terminal apparatus according to claim 1, further comprising a step of performing dialing corresponding to the received dial key when a dial key is input after a call path is formed corresponding to the hook switch hook-off. How to automatically cut into currency. The method of claim 3, further comprising the step of transmitting a warning sound to alert the user to cut off the call when the set time has elapsed after forming the call path. In the automatic call cutting method of a telephone terminal device, when the hook switch is hooked off, a process of forming a call path and a preset time set for automatic cutting of a call path after forming the call path have elapsed. And a step of transmitting a warning sound for alerting the cut of the formed call path, and a step of cutting the formed call path after transmitting the warning sound.