Olle E. Johansson writes:

> This was discussed briefly at a SIPit a few years ago. Outbound seems to 
> focus on session setup, not session management. What happens
> if a connection goes down and a device re-registers with a new
> reg-id during a call?

reg-id does not need to be new.  if ua looses tcp connection to ob proxy
and sets up a new one, reg-id will not change.  if flow tokens are in
use in route set, that ua cannot be reached anymore for in-dialog
requests, which is a bad thing and breaks rfc 3261.  therefore, a
standards compliant sip proxy cannot be configured to use flow tokens in
its route uris.

-- juha

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