KR970056535A - Automatic recovery device by phone call and its method - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

It is a technology that automatically cuts and restores a call path when a silence state is detected for a set time when a handset is incorrectly placed in a telephone terminal device or when a busy tone and howler container is detected for a predetermined time.

2. Technical problem to be solved by the invention

It solves the problem of not making a phone call because the telephone handset is incorrectly put down by the handset.

3. Summary of Solution to Invention

After the hook-up is made in the telephone terminal device and a call path is formed, when a howler tone, busy tone, or silence is detected, the call path is automatically cut and restored.

4. Important uses of the invention

Applies to telephone terminal equipment.

Description

Automatic recovery device by phone call and its method

Since this is an open matter, no full text was included.

1 is a block diagram of a telephone terminal device according to an embodiment of the present invention;

2 is a control flow diagram for automatically cutting down the call path of an embodiment according to the present invention;

3 is a logic waveform diagram for detecting the presence or absence of the howler tone, busy tone, voice signal according to the present invention,

4 is a control flow diagram for automatically cutting the call path of another embodiment according to the present invention;

5 is a control flow diagram for automatically cutting the call path of another embodiment according to the present invention.

Claims (43)

A call path automatic recovery device of a telephone terminal device, comprising: control means for automatically cutting a call path when a busy tone, howler tone, and silent state are removed after a call path is formed, and by the control of the control means Call path control means for connecting or cutting a call loop of a line, receiving a signal output from the call path control means or a transmission signal provided to the call path control means, and comparing it with a predetermined level signal to detect a signal presence detection signal. And automatic signal recovery device for a telephone terminal device, characterized in that it comprises a signal detection means provided to said control means. The telephone line apparatus of claim 1, further comprising: a telephone circuit connecting the telephone line and the handset and outputting a voice signal received from the telephone line or a voice signal input from the handset. Recovery device. 3. The signal detecting means according to claim 2, wherein the signal detecting means comprises: amplifying means for amplifying and outputting a received signal output to the communication path control means or a voice signal output from the communication circuit to a predetermined level; Receiving signal and comparing with a predetermined reference level signal, the automatic recovery device for the call of the telephone terminal device, characterized in that it comprises a comparison means for providing a signal presence detection signal to the control means The telephone set as claimed in claim 1, further comprising a frequency detecting means connected to said call control means for detecting various tone signals from the frequency received from said telephone line, converting them into digital data, and providing them to said control means. Automatic recovery device by call of terminal device 5. The apparatus of claim 4, wherein the tone signals in the frequency detecting means are busy tone and howler tone. 5. The method according to claim 4, wherein the frequency detecting means comprises: a haultone detection means for detecting a howler tone signal supplied from an exchange when a handset is placed wrongly and received from the telephone line through the communication path control means; Calling device of the telephone terminal device, characterized in that the dialing number is dialed to detect the busy signal received from the telephone line through the communication line control means supplied from the exchange when busy Auto recovery device. A call path automatic recovery device of a telephone terminal device, comprising: control means for automatically cutting down a call path when a busy tone signal or a howler tone signal is detected after a call path is formed, and a telephone line under control of the control means; A communication path control means for connecting or cutting a call loop of a frequency detection means, and a frequency detection means connected to the communication path control means for detecting various tone signals from the frequency received from the telephone line and converting the digital signal into digital data for providing the control means to the control means. Automatic recovery device by the call of the telephone terminal device, characterized in that configured as. 8. The automatic call recovery apparatus of claim 7, wherein the tone signals in the frequency detecting means are busy tone and howler tone. 8. The method according to claim 7, wherein the frequency detecting means comprises: a haultone detection means for detecting a haultone signal received from the telephone line through the communication line control means when the handset is misplaced; Calling of the telephone terminal device, characterized in that the telephone number is provided by dialing a counterpart phone number and is supplied from the exchange to the call control unit to detect a busy tone signal received from the control line and configured as a busy tone detecting unit. Automatic recovery device. A call path automatic recovery device of a telephone terminal device, comprising: control means for automatically cutting a call path when a busy tone signal or a silent signal is detected after a call path is formed, and a call of a telephone line by the control of the control means Call path control means for connecting or cutting a loop, and frequency detection means connected to the call path control means for detecting a busy signal from a frequency received from the phone line, converting the digital signal into digital data, and providing the control means to the control means. Automatic recovery device by the call of the telephone terminal device characterized in that. 12. The apparatus of claim 10, further comprising receiving a received voice signal output from the communication path control means or a transmission voice signal provided to the communication path control means and providing a signal presence detection signal to the control means in comparison with a predetermined level signal. Automatic recovery device for the call of the telephone terminal device characterized in that it further comprises a detection means 12. The call recovery apparatus of claim 11, wherein the signal detecting means detects a silent signal. A call path automatic recovery device of a telephone terminal device, comprising: control means for automatically cutting a call path when a busy tone signal or a silent signal is detected after a call path is formed, and a call of a telephone line by the control of the control means Signal detecting means for supplying busy on / off pulses to the control means by comparing the busy path control means for connecting or cutting the loop and the busy level signal outputted from the towaro control means with a predetermined reference level signal. Automatic recovery device by the call of the telephone terminal device, characterized in that configured as. A call path automatic recovery device of a telephone terminal device, comprising: control means for automatically cutting a call path when a busy tone signal or silence is detected after a call path is formed, and a call on a telephone line by control of a fraud control means; Call path control means for connecting or cutting a loop, and frequency detection means connected to the call path control means for detecting a Howler tone signal from a frequency received from the phone line, converting the digital data into digital data, and providing the control means to the control means. Automatic recovery device by the call of the telephone terminal device characterized in that. 15. The apparatus of claim 14, further comprising receiving a received voice signal output from the communication path control means or a transmission voice signal provided to the communication path control means and providing a signal presence detection signal to the control means in comparison with a predetermined level signal. Automatic recovery apparatus for the call of the telephone terminal device, characterized in that it further comprises a detection means. A call path automatic recovery device of a telephone terminal device, comprising: control means for automatically cutting a call path when a CPC signal, howler tone, busy tone, and silence are detected after a call path is formed; A call path control means for connecting or cutting a call loop of a telephone line, and a CPC connected to the call path control means to detect a CPC signal from a frequency received from the telephone line, convert the CPC signal into digital data, and provide it to the control means. Automatic recovery device for the call of the telephone terminal device, characterized in that the detection means 17. The apparatus of claim 16, further comprising receiving a received voice signal output from the communication line control means or a transmission voice signal provided to the communication line control means and providing a signal presence detection signal to the control means in comparison with a predetermined level signal. Automatic recovery apparatus for the call of the telephone terminal device, characterized in that it further comprises a detection means. 17. The method according to claim 16, further comprising a howler tone detection means connected to the communication line control means for detecting a howler tone signal from a frequency received from the telephone line, converting the signal to digital data, and providing the control means to the control means. Automatic recovery device by the call of the telephone terminal device. 17. The apparatus according to claim 16, further comprising a busy tone detecting means connected to said communication line control means for detecting a busy tone signal from a frequency received from said telephone line, converting the busy tone signal into digital data, and providing it to said control means. Automatic recovery device by the call of the telephone terminal device. A method for automatically recovering a call of a telephone terminal device, the method comprising: forming a call path when a hook switch is hooked off, detecting a handset neglect sound after forming the call path, and detecting the handset neglect sound The automatic recovery method of the call of the telephone terminal device, characterized in that the process of cutting the call path. 21. The method of claim 20, wherein the handset neglect is a howler tone. 22. The method of claim 21, wherein the howler tone detection process comprises: inputting one cycle on / off pulse of a predetermined signal through the howler tone detection port, and whether the input on / off pulse is a cycle of the howler tone signal. Determining a reference value when the on / off pulse period coincides with the period of the howler tone signal, and setting a reference value for the input one on / off pulse, and setting the reference value after setting the reference value. Inputting on / off pulses sequentially and comparing the set reference values with each other to determine whether the signals have a predetermined error range, and continuously setting the on / off pulses of the sequentially input predetermined signals as many times as the set number of times. The automatic recovery method of the call of the telephone terminal device, characterized in that the process of recognizing the howler tone when it is determined that the signal of the error range. 23. The method of claim 22, wherein the on / off pulses of the howler barrel are 60ms to 300ms, respectively. 24. The telephone terminal apparatus according to claim 22 or 23, wherein the on / off pulse of the predetermined signal inputted sequentially is recognized as a howler tone when it is determined that the predetermined error range of the reference value is three or more times. Automatic recovery method. A method for automatically recovering a call path of a telephone terminal device, the method comprising: forming a call path when a hook switch is hooked off, detecting a busy signal after forming the call path, and detecting the busy signal. Automatic recovery method by the call of the telephone terminal device, characterized in that the process of cutting the call. 27. The method of claim 25, wherein the busy tone detection process comprises: inputting one cycle on / off pulse of a predetermined signal through the busy tone detection port, and determining whether the input on / off pulse period is a period of the busy signal. And setting a reference value of the input one on / off pulse when the on / off pulse period coincides with the period of the busy signal, and after setting the reference value, turns on the next predetermined signal. A step of sequentially inputting / off pulses to compare the reference values with each other to determine whether the signals are within a predetermined error range, and the constant errors of the reference values consecutively as many times as the on / off pulses of the sequentially input predetermined signals are set. The automatic recovery method of the call of the telephone terminal device, characterized in that the process is recognized as a busy tone when judged by the signal of the range. 26. The method of claim 25, wherein the on / off pulses of the busy tone are 60 ms to 1200 ms, respectively. The telephone terminal apparatus according to claim 26 or 27, wherein the on / off pulses of the sequentially inputted predetermined signals are transferred to busy tone when it is determined that the predetermined error range of the reference value is seven or more times. Automatic recovery method. A method for automatically recovering a call of a telephone terminal device, the method comprising: forming a call path when a hook switch is hooked off, detecting a silent signal after forming the call path, and calling a call when detecting the silent signal Automatic recovery of the call to the telephone terminal device, characterized in that the process of cutting the furnace. The method of claim 29, wherein the detecting of the silent signal comprises: checking whether there is a signal change for a time set as a signal input port, and increasing a counter one by one when there is no signal change for a time set in the signal change checking process; And increasing the counter to check whether the set number of times is increased, and recognizing silently when the counter value reaches the set number of times. 31. The method of claim 30, wherein the time set in between is 10 seconds. 32. The automatic recovery method for a call of a telephone terminal apparatus according to claim 30 or 31, wherein the set number of times is 18. A method for automatically recovering a call path of a telephone terminal device, the method comprising: forming a call path when a hook switch is hooked off, detecting a silent signal after forming the call path, and busy after forming the call path And detecting a tone signal and cutting a call path when detecting a busy tone signal or a silent sound. 34. The method of claim 33, wherein the silent signal detection process comprises: checking whether there is a signal change for a time set as a signal input port, and increasing a counter one by one when there is no signal change for a time set in the signal change check process; And increasing the counter to check whether the set number of times is increased, and recognizing silently when the counter value reaches the set number of times. 35. The method according to claim 33 or 34, wherein the busy tone detection process comprises: inputting one cycle on / off pulse of a predetermined signal through the busy tone detection port, and the input on / off pulse period is a busy tone signal. Determining whether the on / off pulse period coincides with the period of the busy signal, setting a reference value for the input one cycle on / off pulse, and then setting the reference value. Sequentially inputting the on / off pulses of a predetermined signal to compare the reference values with each other to determine whether the signals are within a predetermined error range, and sequentially buying the on / off pulses of the sequentially inputted predetermined signals as many times as set. The automatic recovery method for a call of a telephone terminal device, characterized in that the process is made as a process of recognizing as a busy tone when it is determined that the signal of the reference value is a certain error range. 36. The method of claim 35, wherein the on / off pulses of the busy tone are 60 ms to 1200 ms, respectively. 36. The method of claim 35, wherein the on / off pulses of the sequentially input predetermined signals are recognized as busy tone when it is determined that the predetermined error range of the reference value is 7 or more times. . 38. The method of claim 37, wherein the set time is 10 seconds. 39. The method of claim 38, wherein the set number of times is 18. A method for automatically recovering a call of a telephone terminal device, the method comprising: forming a call path when a hook switch is hooked off, detecting a CPC signal after forming the call path, and a call when detecting the CPC signal Automatic recovery of the call to the telephone terminal device, characterized in that the process of cutting the furnace. 41. The method of claim 40, further comprising: detecting a busy tone when the CPC signal is not detected in the CPC detection process, and cutting a call path when the busy tone is detected during the busy tone detection process. Automatic recovery method by the call of the telephone terminal device. 41. The method of claim 40, further comprising: detecting a howler tone when the CPC signal is not detected in the CPC detection process; and cutting a call path when the howler tone is detected during the howlertone detection process. Automatic recovery method by the call of the telephone terminal device. 41. The method of claim 40, further comprising: detecting silence when a CPC signal is not detected in the CPC detection process, and cutting a communication path when a howler tone is detected during the silence detection process. Automatic recovery method by phone call. ※ Note: The disclosure is based on the initial application.