Patent ID: 7532606
Filing Date: 2009-05-12
Classification: H04L,H04M,H04Q

Abstract:
1. A communication apparatus connected to a communication channel, comprising: a voice coding unit for code-compressing a voice signal inputted and thereby generating voice information, a DTMF detecting unit for detecting a DTMF signal from said voice signal, a DTMF coding unit for, when this DTMF detecting unit has detected a DTMF signal, coding this DTMF signal into a specified form and thereby generating DTMF information, and an information outputting unit for outputting the voice information generated by said voice coding unit and/or the DTMF information generated by said DTMF coding unit to said communication channel, wherein: said DTMF information has a header portion indicating destination information and a payload portion containing DTMF code information indicating the code of said DTMF signal and signal detecting time information indicating the time of detecting this DTMF signal.