McDewey

TAPI structures TAPI messages CTI messages Action Party A 2. Party A dials Party B No change LINE_CALLSTATE hDevice = hCall-1 dwCallbackInstance = 0 dwParam1 = DIALING dwParam2 = 0 dwParam3 = 0 CallStateChangedEvent, CH = C1, State = Dialing, Cause = CauseNoError, Reason = Direct, Calling = A, Called = NP, OrigCalled = NP, LR = NP, RIU = false Party A’ None None None Party A 3. Party B accepts call No change Ignored CallPartyInfoChangedEvent, CH = C1, CallingChanged = False, Calling = A, CalledChanged = true, Called = B, Reason = Direct, RIU = false Cisco Unified TAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs 970 Message Sequence Charts Message Sequence Charts