Hi,
The UA should respond with a 481. In the case of an out of dialog
request the *meaning* of the response in this context is easy to
understand. A receiving UA realizes that it referred to some dialog
that does not exist. There are far too few response codes for us to
create a new one in this situation, and it is unlikely that an
automaton will be able to recover from this error if it has a
different code.
thanks,
-rohan
On Oct 25, 2008, at 10:26 AM, Iñaki Baz Castillo wrote:
This SUBSCRIBE arrives to Alice's UA which is not aware of that
dialog. Which
response should it reply? The flow suggests "481 Call/Transaction
doesn't
exist", but... is it correct?
AFAIK, a 481 should be replied when an *in-dialog* request arrives
to an UAS
which is not aware of that dialog. But in the above case we have an
*initial*
request and the 481 refers to the specific dialog in the "Event"
header.
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