Session initiation protocol (SIP)-specific event notifi- cation. In RFC 3265, Internet Engineering Task Force, June. [3] Rosenberg, J. 2004. A presence event package for the session initiation protocol (sip). In RFC 3856, Internet Engineering Task Force, August. [4] Day, M., J. Rosenberg, and H. Sugano. 2000. A model for presence and instant messaging. In RFC 2778, Internet Engineering Task Force, February. [5] Schulzrinne, H. 2006. CIPID: Contact information in presence informa- tion data format. In RFC 4482. Internet Engineering Task Force, July. [6] 3GPP. 2005. Presence service: Architecture and functional description for release 6. version 6.9.0. 3GPP, http://www.3gpp.org/ftp/Specs/ html-info/23141.htm. [7] Roach, A.B., B. Campbell, and J. Rosenberg. 2006. A session initiation protocol (SIP) event notification extension for resource lists. In RFC 4662. Internet Engineering Task Force, August. [8] 3GPP. 2003. IP multimedia subsystem. version 6.0.0. 3GPP, http:// www.3gpp.org/Specs/html-info/23228.htm. [9] OMA. 2004. Group management architecture. version 1.0. OMA, http://member.openmobilealliance.org/ftp/public_documents/PAG/ Permanent_documents/OMA-PAG-GM-AD-V1_0_0-20041118-D.zip. C 2009 by Taylor & Francis Group, LLC SIP Handbook: Services, Technologies, and Security [10] 3GPP2. 2004. Presence service: Architecture and functional descrip- tion. 3GPP2, http://www.3gpp2.org/Public_html/Specs/X.S0027-001- 0_v1.0_041004.pdf. [11] Sugano, H., S. Fujimoto, G. Klyne, A. Bateman, W. Carr, and J. Peterson. 2004. Presence information data format (PIDF). In RFC 3863. Internet Engineering Task Force, August. [12] Rajaniemi, H.-P., and K. Yanev. SIP and presence. http://www.cs. helsinki.fi/u/yanev/simplep.pdf. [13] Rosenberg, J., H. Schulzrinne, and P. Kyzivat. 2004. Indicating user agent capabilities in the session initiation protocol (SIP). In RFC 3840. Internet Engineering Task Force, August. [14] Schulzrinne, H., V. Gurbani, P. Kyzivat, and J. Rosenberg. 2006. RPID: Rich presence extensions to the presence informatio