/mcpCallState/CallInfo @Refer-to-Target (C) CallState/CallInfo @Referree (B) CallState/CallInfo @Referrer (A) Actions LINECALLSTATE_CONNECTED TAPI callInfo dwCallerID = B dwCalledID = C dwRedirectingID = A dwRedirectionID = C dwConnectedID = B dwReason = LINECALL REASON_UNKNOWN with extended REFER dwOrigin = LINECALL ORIGIN_INTERNAL CallPartyInfoChangedEvent @ B with {calling = B, called = C, LRP = A, origCalled = C, reason = REFER} TAPI callInfo dwCallerID = B dwCalledID = B dwRedirectingID = A dwRedirectionID = C dwConnectedID = C dwReason = DIRECT dwOrigin = LINECALL ORIGIN_INTERNAL LINECALLSTATE_IDLE with extended REFER reason C answers the call, and Refer is successful In-Dialog Refer Where ReferToTarget Redirects the Call in Offering State The following table describes the message sequences for the Refer and Replaces scenario of in-dialog refer where ReferToTarget redirects the call in Offering state. Table 126: Message Sequences for In-Dialog Refer Where ReferToTarget Redirects the Call In CallState/CallInfo @Refer-to-Target (C) CallState/CallInfo @Referree (B) CallState/CallInfo @Referrer (A) Actions A-->B has a call in connected state. The call party information at B should be {calling = A, called = B, LRP = null, origCalled = B, reason = direct} TAPI CallInfo dwCallerID = A dwCalledID = B dwRedirectingID = null dwRedirectionID = null dwConnectedID = A dwReason = Direct dwOrigin = LINECALL ORIGIN_INTERNAL A-->B has a call in connected state. The call party information at A should be {calling = A, called = B, LRP = null, origCalled = B, reason = direct} TAPI CallInfo dwCallerID = A dwCalledID = B dwRedirectingID = null dwRedirectionID = null dwConnectedID = B dwReason = Direct dwOrigin = LINECALL ORIGIN_INTERNAL Referrer (A), Referee (B), and Refer-to-Target (C) exist in Cisco Unified Communications Manager cluster, and CTI is monitoring those lines Cisco Unified TAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs 937 Message Sequence Charts In-Dialog Refer Where ReferToTarget Redirects the Call in Offering State