/mcpExpected events Action For A: LINE_CALLSTATE param1 = x100, CONNECTED Caller = A, Called = B1 Connected B1 For B1: LINE_CALLSTATE param1 = x100, HOLD Caller = A, Called = B1, Connected = A For B2: LINE_CALLSTATE param1 = x100, RINGBACK Caller = B2, Called = C For C: LINE_CALLSTATE param1 = x100, OFFERING Caller = B2, Called = C A (c1) ‡ B1(c2) is on hold, B2 (c3) ‡ C (c4) is ringing For A: LINE_CALLSTATE param1 = x100, CONNECTED Caller = A, Called = B Connected C For B1: Call goES IDLE For B2: Call goes IDLE For C: LINE_CALLSTATE param1 = x100, OFFERING Caller = C, Called = B, Application sends CciscoLineDevSpecificDirectTransfer on B1 (c2) with B2 (c3) as consult call Failure of Direct Transfer Calls Across Lines Device A, B, C where B is roundtable phone and has line B1 and B2 configured. Cisco Unified TAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs 658 Message Sequence Charts Message Sequence Charts