RFC 5411
A Hitchhiker's Guide to the Session Initiation Protocol (SIP)
Pages: 39
Informational
Informational
Part 3 of 3 – Pages 26 to 39
21. Informative References
[3GPP.24.229] 3GPP, "Internet Protocol (IP) multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3", 3GPP TS 24.229 5.22.0, September 2008. [ABNF-FIX] Gurbani, V. and B. Carpenter, "Essential correction for IPv6 ABNF in RFC3261", Work in Progress, November 2007. [BODY-HANDLING] Camarillo, G., "Message Body Handling in the Session Initiation Protocol (SIP)", Work in Progress, November 2008. [CERTS] Jennings, C. and J. Fischl, "Certificate Management Service for The Session Initiation Protocol (SIP)", Work in Progress, November 2008. [CONFIG-FRAME] Channabasappa, S., "A Framework for Session Initiation Protocol User Agent Profile Delivery", Work in Progress, February 2008. [CONNECT-PRECON] Andreasen, F., Camarillo, G., Oran, D., and D. Wing, "Connectivity Preconditions for Session Description Protocol Media Streams", Work in Progress, October 2008. [CONNECT-REUSE] Gurbani, V., Mahy, R., and B. Tate, "Connection Reuse in the Session Initiation Protocol (SIP)", Work in Progress, October 2008. [DOMAIN-CERTS] Gurbani, V., Lawrence, S., and B. Laboratories, "Domain Certificates in the Session Initiation Protocol (SIP)", Work in Progress, October 2008. [ECRIT-FRAME] Rosen, B., Schulzrinne, H., Polk, J., and A. Newton, "Framework for Emergency Calling using Internet Multimedia", Work in Progress, July 2008. [GRUU] Rosenberg, J., "Obtaining and Using Globally Routable User Agent (UA) URIs (GRUU) in the Session Initiation Protocol (SIP)", Work in Progress, October 2007.
[GRUU-REG] Kyzivat, P., "Registration Event Package Extension for Session Initiation Protocol (SIP) Globally Routable User Agent URIs (GRUUs)", Work in Progress, July 2007. [HGTTG] Adams, D., "The Hitchhiker's Guide to the Galaxy", September 1979. [ICE] Rosenberg, J., "Interactive Connectivity Establishment (ICE): A Protocol for Network Address Translator (NAT) Traversal for Offer/Answer Protocols", Work in Progress, October 2007. [ICE-TCP] Rosenberg, J., "TCP Candidates with Interactive Connectivity Establishment (ICE)", Work in Progress, July 2008. [INTERACT-FRAME] Rosenberg, J., "A Framework for Application Interaction in the Session Initiation Protocol (SIP)", Work in Progress, July 2005. [IPv6-TRANS] Camarillo, G., "IPv6 Transition in the Session Initiation Protocol (SIP)", Work in Progress, August 2007. [LOCATION] Polk, J. and B. Rosen, "Location Conveyance for the Session Initiation Protocol", Work in Progress, November 2008. [LOOP-FIX] Sparks, R., Lawrence, S., Hawrylyshen, A., and B. Campen, "Addressing an Amplification Vulnerability in Session Initiation Protocol (SIP) Forking Proxies", Work in Progress, October 2008. [OPTION-TAG] Rosenberg, J., "Indicating Support for Interactive Connectivity Establishment (ICE) in the Session Initiation Protocol (SIP)", Work in Progress, June 2007. [OUTBOUND] Jennings, C. and R. Mahy, "Managing Client Initiated Connections in the Session Initiation Protocol (SIP)", Work in Progress, October 2008. [POLICY-PACK] Hilt, V. and G. Camarillo, "A Session Initiation Protocol (SIP) Event Package for Session-Specific Session Policies.", Work in Progress, July 2008. [QoS-ID] Polk, J., Dhesikan, S., and G. Camarillo, "Quality
of Service (QoS) Mechanism Selection in the Session
Description Protocol (SDP)", Work in Progress,
November 2008.
[RECORD-ROUTE] Froment, T., Lebel, C., and B. Bonnaerens,
"Addressing Record-Route issues in the Session
Initiation Protocol (SIP)", Work in Progress,
October 2008.
[RFC2026] Bradner, S., "The Internet Standards Process --
Revision 3", BCP 9, RFC 2026, October 1996.
[RFC2543] Handley, M., Schulzrinne, H., Schooler, E., and J.
Rosenberg, "SIP: Session Initiation Protocol",
RFC 2543, March 1999.
[RFC2782] Gulbrandsen, A., Vixie, P., and L. Esibov, "A DNS
RR for specifying the location of services (DNS
SRV)", RFC 2782, February 2000.
[RFC2848] Petrack, S. and L. Conroy, "The PINT Service
Protocol: Extensions to SIP and SDP for IP Access
to Telephone Call Services", RFC 2848, June 2000.
[RFC2976] Donovan, S., "The SIP INFO Method", RFC 2976,
October 2000.
[RFC3087] Campbell, B. and R. Sparks, "Control of Service
Context using SIP Request-URI", RFC 3087,
April 2001.
[RFC3204] 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.
[RFC3261] Rosenberg, J., Schulzrinne, H., Camarillo, G.,
Johnston, A., Peterson, J., Sparks, R., Handley,
M., and E. Schooler, "SIP: Session Initiation
Protocol", RFC 3261, June 2002.
[RFC3262] Rosenberg, J. and H. Schulzrinne, "Reliability of
Provisional Responses in Session Initiation
Protocol (SIP)", RFC 3262, June 2002.
[RFC3263] Rosenberg, J. and H. Schulzrinne, "Session
Initiation Protocol (SIP): Locating SIP Servers",
RFC 3263, June 2002.
[RFC3264] Rosenberg, J. and H. Schulzrinne, "An Offer/Answer Model with Session Description Protocol (SDP)", RFC 3264, June 2002. [RFC3265] Roach, A., "Session Initiation Protocol (SIP)- Specific Event Notification", RFC 3265, June 2002. [RFC3310] Niemi, A., Arkko, J., and V. Torvinen, "Hypertext Transfer Protocol (HTTP) Digest Authentication Using Authentication and Key Agreement (AKA)", RFC 3310, September 2002. [RFC3311] Rosenberg, J., "The Session Initiation Protocol (SIP) UPDATE Method", RFC 3311, October 2002. [RFC3312] Camarillo, G., Marshall, W., and J. Rosenberg, "Integration of Resource Management and Session Initiation Protocol (SIP)", RFC 3312, October 2002. [RFC3313] Marshall, W., "Private Session Initiation Protocol (SIP) Extensions for Media Authorization", RFC 3313, January 2003. [RFC3320] Price, R., Bormann, C., Christoffersson, J., Hannu, H., Liu, Z., and J. Rosenberg, "Signaling Compression (SigComp)", RFC 3320, January 2003. [RFC3323] Peterson, J., "A Privacy Mechanism for the Session Initiation Protocol (SIP)", RFC 3323, November 2002. [RFC3325] Jennings, C., Peterson, J., and M. Watson, "Private Extensions to the Session Initiation Protocol (SIP) for Asserted Identity within Trusted Networks", RFC 3325, November 2002. [RFC3326] Schulzrinne, H., Oran, D., and G. Camarillo, "The Reason Header Field for the Session Initiation Protocol (SIP)", RFC 3326, December 2002. [RFC3327] Willis, D. and B. Hoeneisen, "Session Initiation Protocol (SIP) Extension Header Field for Registering Non-Adjacent Contacts", RFC 3327, December 2002. [RFC3329] Arkko, J., Torvinen, V., Camarillo, G., Niemi, A., and T. Haukka, "Security Mechanism Agreement for the Session Initiation Protocol (SIP)", RFC 3329,
January 2003.
[RFC3372] Vemuri, A. and J. Peterson, "Session Initiation
Protocol for Telephones (SIP-T): Context and
Architectures", BCP 63, RFC 3372, September 2002.
[RFC3388] Camarillo, G., Eriksson, G., Holler, J., and H.
Schulzrinne, "Grouping of Media Lines in the
Session Description Protocol (SDP)", RFC 3388,
December 2002.
[RFC3398] Camarillo, G., Roach, A., Peterson, J., and L. Ong,
"Integrated Services Digital Network (ISDN) User
Part (ISUP) to Session Initiation Protocol (SIP)
Mapping", RFC 3398, December 2002.
[RFC3401] Mealling, M., "Dynamic Delegation Discovery System
(DDDS) Part One: The Comprehensive DDDS", RFC 3401,
October 2002.
[RFC3420] Sparks, R., "Internet Media Type message/sipfrag",
RFC 3420, November 2002.
[RFC3427] Mankin, A., Bradner, S., Mahy, R., Willis, D., Ott,
J., and B. Rosen, "Change Process for the Session
Initiation Protocol (SIP)", BCP 67, RFC 3427,
December 2002.
[RFC3428] Campbell, B., Rosenberg, J., Schulzrinne, H.,
Huitema, C., and D. Gurle, "Session Initiation
Protocol (SIP) Extension for Instant Messaging",
RFC 3428, December 2002.
[RFC3482] Foster, M., McGarry, T., and J. Yu, "Number
Portability in the Global Switched Telephone
Network (GSTN): An Overview", RFC 3482,
February 2003.
[RFC3486] Camarillo, G., "Compressing the Session Initiation
Protocol (SIP)", RFC 3486, February 2003.
[RFC3515] Sparks, R., "The Session Initiation Protocol (SIP)
Refer Method", RFC 3515, April 2003.
[RFC3524] Camarillo, G. and A. Monrad, "Mapping of Media
Streams to Resource Reservation Flows", RFC 3524,
April 2003.
[RFC3550] Schulzrinne, H., Casner, S., Frederick, R., and V. Jacobson, "RTP: A Transport Protocol for Real-Time Applications", STD 64, RFC 3550, July 2003. [RFC3578] Camarillo, G., Roach, A., Peterson, J., and L. Ong, "Mapping of Integrated Services Digital Network (ISDN) User Part (ISUP) Overlap Signalling to the Session Initiation Protocol (SIP)", RFC 3578, August 2003. [RFC3581] Rosenberg, J. and H. Schulzrinne, "An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing", RFC 3581, August 2003. [RFC3605] Huitema, C., "Real Time Control Protocol (RTCP) attribute in Session Description Protocol (SDP)", RFC 3605, October 2003. [RFC3608] Willis, D. and B. Hoeneisen, "Session Initiation Protocol (SIP) Extension Header Field for Service Route Discovery During Registration", RFC 3608, October 2003. [RFC3665] Johnston, A., Donovan, S., Sparks, R., Cunningham, C., and K. Summers, "Session Initiation Protocol (SIP) Basic Call Flow Examples", BCP 75, RFC 3665, December 2003. [RFC3666] Johnston, A., Donovan, S., Sparks, R., Cunningham, C., and K. Summers, "Session Initiation Protocol (SIP) Public Switched Telephone Network (PSTN) Call Flows", BCP 76, RFC 3666, December 2003. [RFC3680] Rosenberg, J., "A Session Initiation Protocol (SIP) Event Package for Registrations", RFC 3680, March 2004. [RFC3725] Rosenberg, J., Peterson, J., Schulzrinne, H., and G. Camarillo, "Best Current Practices for Third Party Call Control (3pcc) in the Session Initiation Protocol (SIP)", BCP 85, RFC 3725, April 2004. [RFC3830] Arkko, J., Carrara, E., Lindholm, F., Naslund, M., and K. Norrman, "MIKEY: Multimedia Internet KEYing", RFC 3830, August 2004. [RFC3840] Rosenberg, J., Schulzrinne, H., and P. Kyzivat, "Indicating User Agent Capabilities in the Session
Initiation Protocol (SIP)", RFC 3840, August 2004.
[RFC3841] Rosenberg, J., Schulzrinne, H., and P. Kyzivat,
"Caller Preferences for the Session Initiation
Protocol (SIP)", RFC 3841, August 2004.
[RFC3842] Mahy, R., "A Message Summary and Message Waiting
Indication Event Package for the Session Initiation
Protocol (SIP)", RFC 3842, August 2004.
[RFC3853] Peterson, J., "S/MIME Advanced Encryption Standard
(AES) Requirement for the Session Initiation
Protocol (SIP)", RFC 3853, July 2004.
[RFC3856] Rosenberg, J., "A Presence Event Package for the
Session Initiation Protocol (SIP)", RFC 3856,
August 2004.
[RFC3857] Rosenberg, J., "A Watcher Information Event
Template-Package for the Session Initiation
Protocol (SIP)", RFC 3857, August 2004.
[RFC3890] Westerlund, M., "A Transport Independent Bandwidth
Modifier for the Session Description Protocol
(SDP)", RFC 3890, September 2004.
[RFC3891] Mahy, R., Biggs, B., and R. Dean, "The Session
Initiation Protocol (SIP) "Replaces" Header",
RFC 3891, September 2004.
[RFC3892] Sparks, R., "The Session Initiation Protocol (SIP)
Referred-By Mechanism", RFC 3892, September 2004.
[RFC3893] Peterson, J., "Session Initiation Protocol (SIP)
Authenticated Identity Body (AIB) Format",
RFC 3893, September 2004.
[RFC3903] Niemi, A., "Session Initiation Protocol (SIP)
Extension for Event State Publication", RFC 3903,
October 2004.
[RFC3910] Gurbani, V., Brusilovsky, A., Faynberg, I., Gato,
J., Lu, H., and M. Unmehopa, "The SPIRITS (Services
in PSTN requesting Internet Services) Protocol",
RFC 3910, October 2004.
[RFC3911] Mahy, R. and D. Petrie, "The Session Initiation
Protocol (SIP) "Join" Header", RFC 3911,
October 2004.
[RFC3959] Camarillo, G., "The Early Session Disposition Type
for the Session Initiation Protocol (SIP)",
RFC 3959, December 2004.
[RFC3960] Camarillo, G. and H. Schulzrinne, "Early Media and
Ringing Tone Generation in the Session Initiation
Protocol (SIP)", RFC 3960, December 2004.
[RFC4028] Donovan, S. and J. Rosenberg, "Session Timers in
the Session Initiation Protocol (SIP)", RFC 4028,
April 2005.
[RFC4032] Camarillo, G. and P. Kyzivat, "Update to the
Session Initiation Protocol (SIP) Preconditions
Framework", RFC 4032, March 2005.
[RFC4091] Camarillo, G. and J. Rosenberg, "The Alternative
Network Address Types (ANAT) Semantics for the
Session Description Protocol (SDP) Grouping
Framework", RFC 4091, June 2005.
[RFC4117] Camarillo, G., Burger, E., Schulzrinne, H., and A.
van Wijk, "Transcoding Services Invocation in the
Session Initiation Protocol (SIP) Using Third Party
Call Control (3pcc)", RFC 4117, June 2005.
[RFC4145] Yon, D. and G. Camarillo, "TCP-Based Media
Transport in the Session Description Protocol
(SDP)", RFC 4145, September 2005.
[RFC4168] Rosenberg, J., Schulzrinne, H., and G. Camarillo,
"The Stream Control Transmission Protocol (SCTP) as
a Transport for the Session Initiation Protocol
(SIP)", RFC 4168, October 2005.
[RFC4169] Torvinen, V., Arkko, J., and M. Naslund, "Hypertext
Transfer Protocol (HTTP) Digest Authentication
Using Authentication and Key Agreement (AKA)
Version-2", RFC 4169, November 2005.
[RFC4235] Rosenberg, J., Schulzrinne, H., and R. Mahy, "An
INVITE-Initiated Dialog Event Package for the
Session Initiation Protocol (SIP)", RFC 4235,
November 2005.
[RFC4240] Burger, E., Van Dyke, J., and A. Spitzer, "Basic
Network Media Services with SIP", RFC 4240,
December 2005.
[RFC4244] Barnes, M., "An Extension to the Session Initiation
Protocol (SIP) for Request History Information",
RFC 4244, November 2005.
[RFC4320] Sparks, R., "Actions Addressing Identified Issues
with the Session Initiation Protocol's (SIP) Non-
INVITE Transaction", RFC 4320, January 2006.
[RFC4347] Rescorla, E. and N. Modadugu, "Datagram Transport
Layer Security", RFC 4347, April 2006.
[RFC4411] Polk, J., "Extending the Session Initiation
Protocol (SIP) Reason Header for Preemption
Events", RFC 4411, February 2006.
[RFC4412] Schulzrinne, H. and J. Polk, "Communications
Resource Priority for the Session Initiation
Protocol (SIP)", RFC 4412, February 2006.
[RFC4458] Jennings, C., Audet, F., and J. Elwell, "Session
Initiation Protocol (SIP) URIs for Applications
such as Voicemail and Interactive Voice Response
(IVR)", RFC 4458, April 2006.
[RFC4474] Peterson, J. and C. Jennings, "Enhancements for
Authenticated Identity Management in the Session
Initiation Protocol (SIP)", RFC 4474, August 2006.
[RFC4483] Burger, E., "A Mechanism for Content Indirection in
Session Initiation Protocol (SIP) Messages",
RFC 4483, May 2006.
[RFC4488] Levin, O., "Suppression of Session Initiation
Protocol (SIP) REFER Method Implicit Subscription",
RFC 4488, May 2006.
[RFC4497] Elwell, J., Derks, F., Mourot, P., and O. Rousseau,
"Interworking between the Session Initiation
Protocol (SIP) and QSIG", BCP 117, RFC 4497,
May 2006.
[RFC4508] Levin, O. and A. Johnston, "Conveying Feature Tags
with the Session Initiation Protocol (SIP) REFER
Method", RFC 4508, May 2006.
[RFC4538] Rosenberg, J., "Request Authorization through Dialog Identification in the Session Initiation Protocol (SIP)", RFC 4538, June 2006. [RFC4566] Handley, M., Jacobson, V., and C. Perkins, "SDP: Session Description Protocol", RFC 4566, July 2006. [RFC4567] Arkko, J., Lindholm, F., Naslund, M., Norrman, K., and E. Carrara, "Key Management Extensions for Session Description Protocol (SDP) and Real Time Streaming Protocol (RTSP)", RFC 4567, July 2006. [RFC4568] Andreasen, F., Baugher, M., and D. Wing, "Session Description Protocol (SDP) Security Descriptions for Media Streams", RFC 4568, July 2006. [RFC4572] Lennox, J., "Connection-Oriented Media Transport over the Transport Layer Security (TLS) Protocol in the Session Description Protocol (SDP)", RFC 4572, July 2006. [RFC4574] Levin, O. and G. Camarillo, "The Session Description Protocol (SDP) Label Attribute", RFC 4574, August 2006. [RFC4575] Rosenberg, J., Schulzrinne, H., and O. Levin, "A Session Initiation Protocol (SIP) Event Package for Conference State", RFC 4575, August 2006. [RFC4579] Johnston, A. and O. Levin, "Session Initiation Protocol (SIP) Call Control - Conferencing for User Agents", BCP 119, RFC 4579, August 2006. [RFC4583] Camarillo, G., "Session Description Protocol (SDP) Format for Binary Floor Control Protocol (BFCP) Streams", RFC 4583, November 2006. [RFC4662] Roach, A., Campbell, B., and J. Rosenberg, "A Session Initiation Protocol (SIP) Event Notification Extension for Resource Lists", RFC 4662, August 2006. [RFC4730] Burger, E. and M. Dolly, "A Session Initiation Protocol (SIP) Event Package for Key Press Stimulus (KPML)", RFC 4730, November 2006. [RFC4733] Schulzrinne, H. and T. Taylor, "RTP Payload for DTMF Digits, Telephony Tones, and Telephony
Signals", RFC 4733, December 2006.
[RFC4796] Hautakorpi, J. and G. Camarillo, "The Session
Description Protocol (SDP) Content Attribute",
RFC 4796, February 2007.
[RFC4896] Surtees, A., West, M., and A. Roach, "Signaling
Compression (SigComp) Corrections and
Clarifications", RFC 4896, June 2007.
[RFC4916] Elwell, J., "Connected Identity in the Session
Initiation Protocol (SIP)", RFC 4916, June 2007.
[RFC4960] Stewart, R., "Stream Control Transmission
Protocol", RFC 4960, September 2007.
[RFC5027] Andreasen, F. and D. Wing, "Security Preconditions
for Session Description Protocol (SDP) Media
Streams", RFC 5027, October 2007.
[RFC5049] Bormann, C., Liu, Z., Price, R., and G. Camarillo,
"Applying Signaling Compression (SigComp) to the
Session Initiation Protocol (SIP)", RFC 5049,
December 2007.
[RFC5079] Rosenberg, J., "Rejecting Anonymous Requests in the
Session Initiation Protocol (SIP)", RFC 5079,
December 2007.
[RFC5360] Rosenberg, J., Camarillo, G., and D. Willis, "A
Framework for Consent-Based Communications in the
Session Initiation Protocol (SIP)", RFC 5360,
October 2008.
[RFC5361] Camarillo, G., "A Document Format for Requesting
Consent", RFC 5361, October 2008.
[RFC5362] Camarillo, G., "The Session Initiation Protocol
(SIP) Pending Additions Event Package", RFC 5362,
October 2008.
[RFC5363] Camarillo, G. and A. Roach, "Framework and Security
Considerations for Session Initiation Protocol
(SIP) URI-List Services", RFC 5363, October 2008.
[RFC5365] Garcia-Martin, M. and G. Camarillo, "Multiple-
Recipient MESSAGE Requests in the Session
Initiation Protocol (SIP)", RFC 5365, October 2008.
[RFC5366] Camarillo, G. and A. Johnston, "Conference Establishment Using Request-Contained Lists in the Session Initiation Protocol (SIP)", RFC 5366, October 2008. [RFC5367] Camarillo, G., Roach, A., and O. Levin, "Subscriptions to Request-Contained Resource Lists in the Session Initiation Protocol (SIP)", RFC 5367, October 2008. [RFC5368] Camarillo, G., Niemi, A., Isomaki, M., Garcia- Martin, M., and H. Khartabil, "Referring to Multiple Resources in the Session Initiation Protocol (SIP)", RFC 5368, October 2008. [RFC5373] Willis, D. and A. Allen, "Requesting Answering Modes for the Session Initiation Protocol (SIP)", RFC 5373, November 2008. [RTCP-SUM] Clark, A., Pendleton, A., Johnston, A., and H. Sinnreich, "Session Initiation Protocol Package for Voice Quality Reporting Event", Work in Progress, October 2008. [SAML] Tschofenig, H., Hodges, J., Peterson, J., Polk, J., and D. Sicker, "SIP SAML Profile and Binding", Work in Progress, November 2008. [SDP-CAP] Andreasen, F., "SDP Capability Negotiation", Work in Progress, July 2008. [SDP-MEDIA] Gilman, R., Even, R., and F. Andreasen, "SDP media capabilities Negotiation", Work in Progress, July 2008. [SESSION-POLICY] Hilt, V., Camarillo, G., and J. Rosenberg, "A Framework for Session Initiation Protocol (SIP) Session Policies", Work in Progress, November 2008. [SIMPLE] Rosenberg, J., "SIMPLE made Simple: An Overview of the IETF Specifications for Instant Messaging and Presence using the Session Initiation Protocol (SIP)", Work in Progress, October 2008. [SIPS-URI] Audet, F., "The Use of the SIPS URI Scheme in the Session Initiation Protocol (SIP)", Work in Progress, November 2008.
[SRTP-FRAME] Fischl, J., Tschofenig, H., and E. Rescorla, "Framework for Establishing an SRTP Security Context using DTLS", Work in Progress, October 2008. [SUBNOT-ETAGS] Niemi, A., "An Extension to Session Initiation Protocol (SIP) Events for Conditional Event Notification", Work in Progress, July 2008. [TRANSFER-MECH] Garcia, M., Isomaki, M., Camarillo, G., Loreto, S., and P. Kyzivat, "A Session Description Protocol (SDP) Offer/Answer Mechanism to Enable File Transfer", Work in Progress, November 2008. [UA-PRIVACY] Munakata, M., Schubert, S., and T. Ohba, "UA-Driven Privacy Mechanism for SIP", Work in Progress, October 2008. [UPDATE-PAI] Elwell, J., "Updates to Asserted Identity in the Session Initiation Protocol (SIP)", Work in Progress, October 2008.Author's Address
Jonathan Rosenberg Cisco Iselin, NJ US EMail: jdrosen@cisco.com URI: http://www.jdrosen.net
Full Copyright Statement Copyright (C) The IETF Trust (2009). This document is subject to the rights, licenses and restrictions contained in BCP 78, and except as set forth therein, the authors retain all their rights. This document and the information contained herein are provided on an "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY, THE IETF TRUST AND THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Intellectual Property The IETF takes no position regarding the validity or scope of any Intellectual Property Rights or other rights that might be claimed to pertain to the implementation or use of the technology described in this document or the extent to which any license under such rights might or might not be available; nor does it represent that it has made any independent effort to identify any such rights. Information on the procedures with respect to rights in RFC documents can be found in BCP 78 and BCP 79. Copies of IPR disclosures made to the IETF Secretariat and any assurances of licenses to be made available, or the result of an attempt made to obtain a general license or permission for the use of such proprietary rights by implementers or users of this specification can be obtained from the IETF on-line IPR repository at http://www.ietf.org/ipr. The IETF invites any interested party to bring to its attention any copyrights, patents or patent applications, or other proprietary rights that may cover technology that may be required to implement this standard. Please address the information to the IETF at ietf-ipr@ietf.org.