Slides, SIP Working Group IETF 56

• Working Group Status, Chairs (ppt)
• Congestion Safety, Dean Willis (ppt), Hisham Khartabil (ppt)
• Non-Invite Transactions, Robert Sparks (ppt)
• Referred-By, Robert Sparks (ppt)
• Caller Preferences, Jonathan Rosenber (ppt)
• Resource Priority, Henning Schulzrinne (ppt)
• Auth-ID Body, Jon Peterson (ppt)