Administrator’s Guide for CP860 IP conference phones
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The following figure illustrates successful 3-way calling between Yealink CP860 IP
conference phones in which User A mixes two RTP channels and therefore establishes a
conference between User B and User C. In this call flow scenario, the end users are User
A, User B, and User C. They are all using Yealink SIP IP phones, which are connected via
an IP network.
The call flow scenario is as follows:
1. User A calls User B.
2. User B answers the call.
3. User A puts User B on hold.
4. User A calls User C.
5. User C answers the call.
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