Note to self, keep an eye on these RFCs:
- “The Session Initiation Protocol (SIP) and Spam”, Jonathan Rosenberg
- “A Framework for Application Interaction in the Session Initiation Protocol (SIP)”, Jonathan Rosenberg
- “Requirements for Consent-Based Communications in the Session Initiation Protocol (SIP)”, Jonathan Rosenberg
- “Certificate Management Service for The Session Initiation Protocol (SIP)”, Cullen Jennings, Jon Peterson
That last is of particular interest to me in potentially providing assertions of identity in SIP interconnect scenarios (see my SIP Wiki entry on the subject: SIP Security and SPAM Prevention).