VOIP SYSTEM FOR AUTOMATICALLY DETECTING AND UPDATING A TONE AND A CONTROL METHOD THEREOF, PARTICULARLY FOR AUTOMATICALLY ANALYZING A DISTORTED CALL PROCEEDING TONE OR A CALL PROCEEDING TONE WITH NOISE TO PERFORM NORMAL VOIP CALL PROCESSING AND UPDATING PREVIOUS CALL PROCEEDING TONE INFORMATION BY DOWNLOADING NEW CALL PROCEEDING TONE INFORMATION FROM A REMOTE SYSTEM MANAGER

摘要

PURPOSE: A VoIP(Voice over Internet Protocol) system for automatically detecting and updating a tone and its control method are provided to provide a good quality service by preventing an error generated with respect to channel resource allocation or settlement of accounts due to a failure of sensing various call proceeding tones. CONSTITUTION: A tone storing unit(220) stores call proceeding tone information required for processing a VoIP call. A tone detection and analyzing unit(230) determines whether a currently detected call proceeding tone has an error, automatically analyzes the currently detected call proceeding tone if it has an error, and updates previous call proceeding tone information by storing the tone information generated according to the analysis result in the tone storing unit(220). An FTP(File Transfer Protocol) unit(240) transmits the call proceeding tone information stored in the tone storing unit(220) through an IP(Internet Protocol) network(300) or updates the call proceeding tone information stored in the tone storing unit(220). A central processing unit(250) controls the FTP unit(240) to interwork with the IP network(300), receives a report about the call proceeding tone information stored in the tone storing unit(220) from the tone detection and analyzing unit(230) and processes the VoIP call accordingly.