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  ITU-T A.5 justification information for referenced document IETF RFC 3261 (2002) in draft Q.3616
1. Clear description of the referenced document:
Name: IETF RFC 3261 (2002)
Title: SIP: Session Initiation Protocol
2. Status of approval:
Standards Track RFC - Proposed Standard approved July 2002
3. Justification for the specific reference:
Q.CDIV refers to overall specification of IETF RFC 3261 (2002) for Session Initiation Protocol.
4. Current information, if any, about IPR issues:
Information on IPR issues regarding RFCs is available at: https://datatracker.ietf.org/ipr/search/. Specifically: https://datatracker.ietf.org/ipr/search/?option=rfc_search&rfc_search=3261
5. Other useful information describing the "Quality" of the document:
This RFC has been in existence since June 2002. Errata exist. Obsoletes RFC 2543.
6. The degree of stability or maturity of the document:
Updated by RFC 3265, RFC 3853, RFC 4320, RFC 4916, RFC 5393, RFC 5621, RFC 5626, RFC 5630, RFC 5922, RFC 5954, RFC 6026, RFC 6141, RFC 6665, RFC 6878, RFC 7463, RFC 7462, RFC 8217, RFC 8591, RFC 8760, RFC 8898, RFC 8996. Obsoletes RFC 2543. Errata Exist.
7. Relationship with other existing or emerging documents:
-
8. Any explicit references within that referenced document should also be listed:
[1] Handley, M. and V. Jacobson, "SDP: Session Description Protocol", RFC 2327, April 1998./
[2] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997./
[3] Resnick, P., "Internet Message Format", RFC 2822, April 2001./
[4] Rosenberg, J. and H. Schulzrinne, "SIP: Locating SIP Servers", RFC 3263, June 2002./
[5] Berners-Lee, T., Fielding, R. and L. Masinter, "Uniform Resource Identifiers (URI): Generic Syntax", RFC 2396, August 1998./
[6] Chown, P., "Advanced Encryption Standard (AES) Ciphersuites for Transport Layer Security (TLS)", RFC 3268, June 2002./
[7] Yergeau, F., "UTF-8, a transformation format of ISO 10646", RFC 2279, January 1998./
[8] Fielding, R., Gettys, J., Mogul, J., Frystyk, H., Masinter, L., Leach, P. and T. Berners-Lee, "Hypertext Transfer Protocol -- HTTP/1.1", RFC 2616, June 1999./
[9] Vaha-Sipila, A., "URLs for Telephone Calls", RFC 2806, April 2000./
[10] Crocker, D. and P. Overell, "Augmented BNF for Syntax Specifications: ABNF", RFC 2234, November 1997./
[11] Freed, F. and N. Borenstein, "Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types", RFC 2046, November 1996./
[12] Eastlake, D., Crocker, S. and J. Schiller, "Randomness Recommendations for Security", RFC 1750, December 1994./
[13] Rosenberg, J. and H. Schulzrinne, "An Offer/Answer Model with SDP", RFC 3264, June 2002./
[14] Postel, J., "User Datagram Protocol", STD 6, RFC 768, August 1980./
[15] Postel, J., "DoD Standard Transmission Control Protocol", RFC 761, January 1980./
[16] Stewart, R., Xie, Q., Morneault, K., Sharp, C., Schwarzbauer, H., Taylor, T., Rytina, I., Kalla, M., Zhang, L. and V. Paxson, "Stream Control Transmission Protocol", RFC 2960, October 2000./
[17] Franks, J., Hallam-Baker, P., Hostetler, J., Lawrence, S., Leach, P., Luotonen, A. and L. Stewart, "HTTP authentication: Basic and Digest Access Authentication", RFC 2617, June 1999./
[18] Troost, R., Dorner, S. and K. Moore, "Communicating Presentation Information in Internet Messages: The Content-Disposition Header Field", RFC 2183, August 1997./
[19] Zimmerer, E., Peterson, J., Vemuri, A., Ong, L., Audet, F., Watson, M. and M. Zonoun, "MIME media types for ISUP and QSIG Objects", RFC 3204, December 2001./
[20] Braden, R., "Requirements for Internet Hosts - Application and Support", STD 3, RFC 1123, October 1989./
[21] Alvestrand, H., "IETF Policy on Character Sets and Languages", BCP 18, RFC 2277, January 1998./
[22] Galvin, J., Murphy, S., Crocker, S. and N. Freed, "Security Multiparts for MIME: Multipart/Signed and Multipart/Encrypted", RFC 1847, October 1995./
[23] Housley, R., "Cryptographic Message Syntax", RFC 2630, June 1999./
[24] Ramsdell B., "S/MIME Version 3 Message Specification", RFC 2633, June 1999./
[25] Dierks, T. and C. Allen, "The TLS Protocol Version 1.0", RFC 2246, January 1999./
[26] Kent, S. and R. Atkinson, "Security Architecture for the Internet Protocol", RFC 2401, November 1998.
9. Qualification of ISOC/IETF:
9.1-9.6     Decisions of ITU Council to admit ISOC to participate in the work of the Sector (June 1995 and June 1996).
9.7     The Internet Engineering Steering Group (IESG) is responsible for ongoing maintenance of the RFCs when the need arises. Comments on RFCs and corresponding changes are accommodated through the existing standardization process.
9.8     Each revision of a given RFC has a different RFC number, so no confusion is possible. All RFCs always remain available on-line. An index of RFCs and their status may be found in the IETF archives at http://www.rfc-editor.org/rfc.html.
10. Other (for any supplementary information):
References should always be made to RFC numbers (and not by other designations such as STD, BCP, etc.). References not to be made to documents referred to as "Internet Drafts" or RFCs categorized as "Historic". Normative references should not be made to RFCs that are not standards, for example, "Informational" and "Experimental" RFCs.
Note: This form is based on Recommendation ITU-T A.5