* 전송 * IETF(http://www.ietf.org) RTSP(RFC 2326)/SDP(RFC 2327) RTP/RTCP(RFC 3550) RTP Profile(RFC 3551) RTP payload type (http://www.ietf.org/html.charters/avt-charter.html) Audio : AMR, EVRC, AAC(MPEG4 내), Qcelp(optional) Video : H.263, H.264, MPEG4 3GPP(www.3gpp.org) http://www.3gpp.org/specs/numbering.htm 22233-630 : Transparent End-to-End Packet-switched Streaming Service; Stage 26233-600 : E..