[16] “AAA Usage for IP Telephony with QoS” by H. Sinnreich, D. Rawlins,
A. Johnston, S. Donovan, and S. Thomas. Internet Draft, Internet Engineer-
ing Task Force, 2000, http://www.aaaarch.org/pittsburgh/
sinnreich/index.htm.
[17] “OSP Authorization Token Header for SIP” by A. Johnston, D. Rawlins, H.
Sinnreich, and S. Thomas. Internet Draft, Internet Engineering Task Force,
2000.
[18] “QoS and AAA Usage with SIP Based IP Communications” by G. Gross,
H. Sinnreich, and D. Rawlins. Internet Draft, Internet Engineering Task
Force, 2000, http://www.iptel.org/ietf/aaa/draft-gross-cops-
sip.01.txt.
[19] “RSVP Extensions for Policy Control” by S. Herzog. IETF RFC 2750, 2000.
[20] “An Architecture for Differentiated Services” by S. Blake., D. Black, M.
Carlson, E. Davies, Z. Wang, and W. Weiss. IETF RFC 2475, 1998.
[21] Information about PacketCable is available at: http://www.packetcable.com.
[22] “SIP: Session Initiation Protocol” by J. Rosenberg, H. Schulzrinne, G.
Camarillo, A. Johnston, J. Peterson, R. Sparks, M. Handley, and E. Schooler.
RFC 3261, June 2002.
[23] “Reliability of Provisional Responses in Session Initiation Protocol (SIP)”
by J. Rosenberg and H. Schulzrinne. RFC 3262, June 2002.
[24] “Architectural Considerations for Providing Carrier Class Telephony
Services Utilizing SIP-based Distributed Call Control Mechanisms” by W.
Marshall, et al. IETF Internet-Draft, Work in Progress.
[25] “Caller Preferences for the Session Initiation Protocol (SIP)” by J. Rosen-
berg, J., Schulzrinne, H., and P. Kyzivat. RFC 3841, August 2004.
[26] “Session Initiation Protocol (SIP) Extension for Instant Messaging” by B.
Campbell, J. Rosenberg, H. Schulzrinne, C. Huitema, and D. Gurle. RFC
3428, December 2002.
[27] “Session Initiation Protocol (SIP)-Specific Event Notification” by A.
Roach. RFC 3265, June 2002.
[28] “The PINT Service Protocol: Extensions to SIP and SDP for IP Access to
Telephone Call Services” by S. Petrack and L. Conroy. IETF RFC 2848, 2000.
[29] “Automatic Call Back Service in SIP” by A. Roach. IETF Internet Draft,
Work in Progress.
[30] “Security Architecture for the Internet Protocol” by S. Kent and R.
Atkinson. IETF RFC 4301, 2006
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