/mcpExpected events Action For A: The scenario will look exactly the same when resume primary call. Call-1 LINE_CALLSTATE param1 = x100, CONNECTED Caller = A, Called = B Connected B Call-2 LINE_CALLSTATE param1 = x400, HOLD Caller = A, Called = C Connected C A press Swap For B: LINE_CALLSTATE param1 = x100, CONNECTED Caller = A, Called = B, Connected = A For C: LINE_CALLSTATE param1 = x100, CONNECTED Caller = A, Called = C, Connected = A Request succeeds as phone cancels existing feature plan and allow CTI request to go through. Application calls LineSetupTransfer on A's connected call (A‡B) to initiate transfer Cisco Unified TAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs 997 Message Sequence Charts Message Sequence Charts