I have a query regarding call hold. I am not really sure if this is already
discussed, but wanted an advice from the experts here.
Is the following call flow acceptable??
Make Call
Invite -->
200 ok <--
ACK -->
Hold --->
INVITE(sendonly) -->
200 ok(recvonly) <---
ACK -->
INVITE(sendrecv) <--- ??????
What should be the response to this INVITE request - 200ok with sendonly or
400 bad request?
Wont this INVITE mean, that the remote is trying to release local hold,
which is unacceptable?
Also, i have not seen any rules regarding this in RFC 3261 or the sipping
examples draft. Please redirect me to any other references, which talk about
attribute modes in subsequent requests after call hold.
Thanks in advance
Retesh
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