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[Sip] RFC 3515: Multiple REFER Requests in a Dialog - Need clarification
Hi
I have seen some
discussion happened on this topic in the following mail trail, but still not
clear with one thing:
Is there any use
case where we receive second REFER message that creates a subscription while
there exists an already an 'active' REFER subscription in the same
dialog? RFC 3515 has given a use case by saying that "If more than one
REFER is issued in the same dialog (a second attempt at transferring a call
for example)". But in the above scenario, I assume that the first
attempt to call transfer has failed (i.e. first REFER subscription
terminated).
Please clarify
me.
Regards
Srikanth
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