/mcpBackward Compatibility This feature is backward compatible. Drop-Any-Party The Drop-Any-Party feature enables the application to drop any call from the ad-hoc conference. This feature is currently supported from the phone interface. The application uses the LineRemoveFromConference function to drop the call from a conference. When the call is dropped from a conference, TSP receives CtiDropConferee as the call state change cause, and this is sent to TAPI as the default cause. Interface Changes See lineRemoveFromConference, on page 186. Message Sequences See Drop Any Party, on page 666. Backward Compatibility This feature is backward compatible. The 0x00090000 extension is added to maintain backward compatibility. Early Offer The Early Offer feature allows the SIP trunk to support early offer outbound calls without using MTP when the media capabilities and media port information of the calling endpoint is available. For the endpoints where the media port information is not available (for example, H323 slow start calls or delayed offer SIP calls or legacy SCCP phones) for Early Offer, Unified Communications Manager allocates an MTP to provide an offer. This means UnifiedCM allocates MTP only when needed. To support the Early Offer feature, Cisco TSP introduces CCiscoLineDevSpecific extension (CciscoLineDevSpecificEnableFeatureSupport) to allow the application to enable or disable the Early Offer feature. This DevSpecific type is generic and can be used for supporting features added in the future. The registration of CTI ports or route points are as follows: • Dynamic registration of CTI ports or route points with Early Offer Support: • New LineDevSpecific type must be requested before registration. • Static registration of CTI ports with Early Offer Support: • New LineDevSpecific type is requested before registration and used to change the Device Capability of Early Offer Support after registration. GET IP and PORT EVENT reports to a CTI Port or Route Point registered with Early Offer Support enabled, on an outbound call. When an outbound call is routed through the SIP trunk with Early Offer Support, TSP reports LINE_DEVSPECIFIC event with Param1 = SLDSMT_RTP_GET_IP_PORT and Param2 = IPAddressing Mode along with SetRTP bit information (ninth bit from LSB). dwParam2 = 0x00000xyy, where: Cisco Unified TAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs 56 Features Supported by TSP Drop-Any-Party