On 06/10/2011 11:09 PM, Iñaki Baz Castillo wrote:
> 2011/6/10 Brez Borland<[email protected]>:
>> Not clear to me though. If proxy has received a CANCEL from Alice it should
>> terminate the transaction.
> This is incorrect. The proxy does not terminate an INVITE server
> transaction when it receives a CANCEL. It just cancels pending
> branches and UAS's are supposed to termiinate the transactions (487)
> or maybe local timeout occurs (not responding branch so local 408 is
> generated).

Which begs the question why then do we accept CANCEL UAC rules to apply 
to proxy transactions and not UAS rules?  Shouldn't they always be a 
pair to ensure end-to-end transaction states are synchronized?
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