/mcpIf there is no ACTIVE or ALERTING call on any of the lines of the device and at least one of the lines has a HELD call, the device state is considered HELD and the corresponding event is delivered to the qualified applications. • WHISPER If there is no ACTIVE or ALERTING or HELD call on any of the lines of the device and at least one of the lines have an intercom call, the device state is considered WHISPER and the corresponding event is delivered to the qualified applications. The ACTIVE state has priority over the ALERTING, HELD, and IDLE states. The ALERTING state has priority over the HELD and IDLE states. The HELD state has priority over the IDLE state. Note To make the LineDevSpecific event indicate the device state for any line of that device, the DEVSPECIFIC_DEVICE_STATE_STATUS_message flag for that line must be turned on using the lineDevSpecific SLDST_SET_STATUS_MESSAGES request. Note Direct Transfer In Unified Communications Manager, the Direct Transfer softkey lets users transfer the other end of one established call to the other end of another established call, while dropping the feature initiator from those two calls. Here, an established call refers to a call that is either in the on hold state or in the connected state. The “Direct Transfer” feature does not initiate a consultation call and does not put the active call on hold. A TAPI application can invoke the “Direct Transfer” feature by using the TAPI lineCompleteTransfer() function on two calls that are already in the established state. This also means that the two calls do not have to be set up initially by using the lineSetupTransfer() function. Direct Transfer Across Lines The Direct Transfer Across Lines feature allows the application to directly transfer calls across the lines that are configured on the device. The application monitors both the lines when directly transferring the calls across the lines. A new LineDevSpecific extension, CciscoLineDevSpecificDirectTransfer, is added to direct transfer calls across the lines or on the same line. The 0x00090000 extension must be negotiated to use CciscoLineDevSpecificDirectTransfer. Interface Changes See Direct Transfer, on page 379. Cisco Unified TAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs 53 Features Supported by TSP Direct Transfer