codecs (G.711, G.723.1, G.728, etc.) and video codecs (H.261, H.263) that compress and decompress media streams. Media streams are transported on RTP/RTCP. RTP carries the actual media and RTCP carries status and control information. The signalling is transported reliably over TCP. The following protocols deal with signalling: RAS manages registration, admission, status. Q.931 manages call setup and termination. H.245 negotiates channel usage and capabilities. H.235 security and authentication. If you wish Whippany broadband , Whippany, NJ broadband WhippanyWhippany , broadband New Jersey, Whippany broadband
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