Hi,
Section 15 of RFC 3261 says - "The caller’s UA MAY send a BYE for
eitherconfirmed or early dialogs, and the callee’s UA MAY send a BYE
onconfirmed dialogs, but MUST NOT send a BYE on early dialogs".
Section 12.1 of RFC 3261 says - "A dialog established by a non-final response
to a request is in the "early" state and it is called an early dialog".
Section 9.1 of RFC 3261 says - "If no provisional response has been received,
the CANCEL request MUST NOT be sent; rather, the client MUST wait for the
arrival of aprovisional response before sending the request. If the
original request has generated a final response, the CANCEL SHOULD NOT be sent,
as it is an effective no-op, since CANCEL has no effect on requests that have
already generated a final response".
So , How In early dialog state can UAC send BYE?
I want to know the used case when caller's UA will send a BYE for a early
dailog case.
Regards,Kishore
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