SIP Info Framework draft-ietf-sip-info-events-03 Eric Burger Hadriel Kaplan Christer Holmberg March 20091IETF 74 - San Francisco, CA, USA

Changes on List Fix up all occurrences of “dialog mumble” with “dialog parameters” Table 1 has archaic references to 2543 Clarify language for overlapping INFOs and the “nil” package Now for Open Issues March 20092IETF 74 - San Francisco, CA, USA

Get a 489, can all still be fine? Option 1: Tear down dialog Something is hopelessly broken, give up Option 2: ignore it – We say INFO does not change dialog state, and a 489 tearing down dialog changes state – But, handling 489 differently for INFO makes INFO “special” – But what if I said “package X is OK” in an INVITE, but there is glare between you sending an INFO from package X and my dropping X in my ACK? March 20093IETF 74 - San Francisco, CA, USA

Response Messages All agree on INVITE, UPDATE, ACK, , Probably sensible to exclude 100 from Recv- Info processing calculation. Thoughts? What about PRACK/PRACK 2xx? What about REFER/REFER 2xx? Missing Recv-Info, empty Recv-Info, Recv-Info: nil March 20094IETF 74 - San Francisco, CA, USA