Patent ID: 7133364

Claim:
An internet telephone communication system comprising: a voice receiving part receiving a first set of voice data packets through an internet network and sending a retransmission frequency information packet requesting to retransmit a same set of voice data packets R times, R being a retransmission frequency and being determined based on a data loss rate of said first set of voice data packets received; and a voice transmitting part retransmitting said same set of voice data packets R times through the internet network according to said retransmission frequency information packet received, wherein said data loss rate is calculated by: L =( T−D ) /T and T=M−N where L is said data loss rate, T is a number of voice data packets supposed to be received during a time interval, D is a number of voice data packets received during said time interval, M is a maximum sequence number of said voice data packets received during said time interval, and N is a minimum sequence number of said voice data packets received during said time interval.