TAPI messages CTI messages Action B: LINE_APPNEWCALL, LINE_CALLSTATE (LINECALLSTATE_DISCONNECTED) ExtendCallReason = CtiReasonRedirect A:CPIC event received on A LineA: LINE_CALLSTATE (LINECALLSTATE_RINGBACK) LineA: LINE_CALLSTATE (LINECALLSTATE_CONNECTED)/ LINE_CALLINFO CallReason = LINECALLREASON_DIRECT LINECALLINFO.dwCallID=0x00400FB2 LINECALLINFO.dwOrigin = 0x00000001 LINECALLINFO.dwReason=0x00000001 LINECALLINFO.dwCallerID = 1900 LINECALLINFO.dwCallerIDName = LINECALLINFO.dwCalledID = 1901 LINECALLINFO.dwCalledIDName = LINECALLINFO.dwConnectedID = 1000 LINECALLINFO.dwConnectedIDName

LINECALLINFO.dwRedirectionID = 1000 LINECALLINFO.dwRedirectionIDName

LINECALLINFO.dwRedirectingID = 1901 LINECALLINFO.dwRedirectingIDName

ExtendCallReason = CtiReasonRedirect A receives CallStateChangeEvent (Connected) B redirects call to 1000 over ICT trunk TSPI_linegetcallinfo on A Basic Call Initiated From TAPI From Phone A and B on Cluster 1 B Transfers to Phone C(1000) on Cluster 2 Over SAF Trunk Configuration SCCP phone A and B are registered to cluster A Phones A and B are associated with the end-user cluster1 Cisco Unified TAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs 493 Message Sequence Charts Basic Call Initiated From TAPI From Phone A and B on Cluster 1 B Transfers to Phone C(1000) on Cluster 2 Over SAF Trunk