Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Jonathan D. Rosenberg, Henning Schulzrinne, Paul Kyzivat. Indicating User Agent Capabilities in the Session Initiation Protocol (SIP). RFC, 3840:1-36, August 2004. [doi]
Abstract is missing.