2009/5/5 Bob Penfield <[email protected]>:
> If there are no binding remaining, the 200 OK does not need to have a Contact 
> header. A 200-OK response without any Contacts indicates that there are no 
> bindings.

Please Bob, read the *oficially* reported bug about this subject which
had a long discussion some time ago:
  http://bugs.sipit.net/show_bug.cgi?id=775

Basically, what you suggest (even if it should be the correct
approach) is not what RFC 3261 states:

---------------
10.3 Processing REGISTER Requests

  The registrar returns a 200 (OK) response.  The response MUST contain
  Contact header field values enumerating all current bindings.
---------------


-- 
Iñaki Baz Castillo
<[email protected]>

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