RFC3261 SIP: Session Initiation Protocol This can be said to be the most important one in VoIP SIP-related standards, replacing the old version of the SIP standard RFC2543 download: http://www.faqs.org/ftp/rfc/pdf/rfc3261.txt.pdf Chinese version http://www.boyinsoft.com/cn-rfc3261.pdf RFC 3262 - Reliability Of Provinces IN Session Initiation Protocol (SIP) Download: http://www.faqs.org/ftp/rfc/pdf/rfc3262 .txt.pdf RFC 3263 - Session Initiation Protocol (SIP): Locating SIP Servers Download: http://www.faqs.org/ftp/rfc/pdf/rfc3263.txt.pdf RFC2976 - The Sip Info Method Download: http: //www.faqs.org/ftp/rfc/pdf/rfc2976.txt.pdf RFC2327 SDP - Session Description Protocol Download: http://www.faqs.org/ftp/rfc/pdf/rfc2327.txt.pdf RFC 3264 - An Offer / Answer Model with session description Protocol (SDP) Download: http://www.faqs.org/ftp/rfc/pdf/rfc3264.txt.pdf RFC2936 - HTTP MIME TYPE HANDLER DETECTION Download: http: // www .faqs.org / ftp / RFC / PDF / RFC2936.TXT.PDF RFC2616 - Hypertext Transfer Protocol - HTTP / 1.1 Download: http://www.faqs.org/ftp/rfc/rfc2616.pdf RFC2617 - HTTP Authentication: Basic and Digest Access Authentication Download : Http://www.faqs.org/ftp/rfc/pdf/rfc2617.txt.pdf rtp - a Transport Protocol for Real-Time Applications The latest RTP RFC has been changed to RFC3550, replacing the old version RFC1889 new version: http: // Www.faqs.org/ftp/rfc/rfc3550.pdf Old Edition: http://www.faqs.org/ftp/rfc/pdf/rfc1889.txt.pdf RFC3551 - RTP Profile for Audio and Video Conferences with minimal control Download: Http://www.faqs.org/ftp/rfc/rfc3551.pdf RFC 2833 - RTP PAYLOAD for DTMF DIGITS, TELEPHONY TONES AND TELEPHONY SIGNALS Introduction: Some lower transfer rates in IP Phone are often not correct The transmission DTMF (Dual Tone Multi Frequency "signal, so the RFC2833 specifies how to transfer the format of the DTMF signal on the RTP's PayLoad.
