Codec with network congestion detection and automatic fallback: methods, systems & program products

摘要: A codec detects congestion in a packet network and responds via session control protocol to re-negotiate codec-type and/or parameters with the receiving reduce bit rate for supporting session. Once connection are established, encoded packets start flowing between two codecs. entity sends receives periodically The provide “heartbeat” signal codec. When is not congested, all will be passed through As increases, routers within discard excess prevent failure. codecs respond missing by slowing down or proceeding renegotiate lower protocol. If there no packets, detect if operating at highest rate, not, higher rate.