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Hi All,
I am implementing a SIP User
Agent. And I would
want to implement the following
services in my
SIP user agent:
1. Call Transfer
2. Call Forwarding (Call
Forwarding on Busy, No Reply, Unconditional)
3. Call Hold
4. Call Waiting
Please let me know the RFCs,
drafts or extensions for implementing
each of these services in
SIP User Agents.
Thanks,
Harsha
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