/mcpDrop Party by Using Click-2-Conference Events Action For A: CONNECTED reason = DIRECT ExtendedCallReason = DIRECT CONFERENCED Calling = A, Called = B, Connected = B CONFERENCED Calling = A, Called = C, Connected = C For B: CONNECTED reason = DIRECT ExtendedCallReason = DIRECT CONFERENCED Calling = A, Called = B, Connected = A CONFERENCED Calling = B, Called = C, Connected = C For C CONNECTED Reason = UNKNOWN ExtendedCallReason = ClickToConference CONFERENCED Calling = C, Called = A, Connected = A CONFERENCED Calling = C, Called = B, Connected = B Conference gets created by using Click-2-Conference feature to add C into conference Cisco Unified TAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs 552 Message Sequence Charts Drop Party by Using Click-2-Conference