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Changes Contact expiration handling defined – unbound from GRUU If you register a contact with instance ID already registered Overwrites the previous No longer sending error Not pursuing multiple contacts per GRUU here Redundancy not in scope here – treat elsewhere May need to modify GRUU behavior for those uses SIPS handling SIP and SIPS versions of GRUU both defined and exist URI scheme of GRUU matches scheme of To in REGISTER SIPS handling otherwise identical to RFC3261 Sidenote: horribly underspecified in RFC3261 – need to revisit |