/mcpWhen the information is changed, TSP reports LineDevSpecific event with param1 = SLDSMT_LINE_PROPERTY_CHANGED, param2 has LPCT_DIRECTTRANSFER_ACROSS_LINE bit on. For phone application, TSP reports PhoneDevSpecific event with param1 = CPDSMT_PHONE_PROPERTY_CHANGED_EVENT, param2 has PPCT_DIRECTRANSFER_ACROSS_LINE bit on. To receive the PHONE_PROPERTY_CHANGED_EVENT, the application must use CCiscoPhoneDevSpecificSetStatusMsgs to set the DEVSPECIFIC_DEVICE_PROPERTY_CHANGED_EVENT bit. For the change notification event described above, the event is delivered to the application by TAPI layer only if the line or device is opened (even though CisoTSP sends the event to TAPI layer). If the line or phone is not opened, the application should call LineGetDevCaps again to obtain latest information about the line/device. The new extension 0x00090001 must be opened or negotiated for this feature. Interface Changes See LINEDEVCAPS, on page 321, Line Property Changed Events, on page 413, and Set Status Msgs, on page 398. Message Sequences See Support for Cisco Unified IP Phone 6900 and 9900 Series Use Cases, on page 984. Backward Compatibility This feature is backward compatible. To maintain backward compatibility new extension (0x00090001) is added. Support for 100 + Directory Numbers This feature enables users to have more than 100 Directory Numbers associated with a Device (Phones, CTI Ports and Route Points). TSP supports this feature and displays the corresponding Lines to the application. Interface Changes There are no interface changes. Message Sequences There are no message sequences. Backward Compatibility This feature is backward compatible. Swap and Cancel Softkeys The following softkeys have been added to the Cisco Unified IP Phone 7900 Series: • Swap Cisco Unified TAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs 100 Features Supported by TSP Support for 100 + Directory Numbers