/mcpCommunications Manager as a non-secure application because CTIManager filters the information about CTI secure roles. Also, after an upgrade from Restricted Unified Communications Manager to Unrestricted Unified Communications Manager, secure TAPI application cannot connect to Unrestricted Unified Communications Manager. To connect to the Unrestricted Cisco Unified Communications Manager after an upgrade, the application must disable secure connection from TSP UI. If the application tries to register CTI Ports/Route Points as secure endpoints in an Unrestricted Unified Communications Manager, then the request fails. However, in some scenarios the registration request may pass, but the device remains closed and failure is reported to the application. Interface Changes There are no interface changes for this feature. Message Sequences See Unrestricted Unified CM, on page 1010. Backward Compatibility This feature is backward compatible. URI Dialing Cisco TSP supports dialing using directory URIs as the destination address. Cisco TSP uses the @ symbol to differentiate between directory URIs and directory numbers. If an @ symbol is present, the dialed address is a directory URI. Directory URIs can now be returned in the dwDevSpecificData call structure. URI dialing is also supported for CTI Remote Devices. Remote destinations can be configured with directory URIs as the remote destination number. Interface Changes The following interfaces have changed to support directory URIs: • lineMakeCall—lpszDestAddress parameter can contain a directory URI • lineBlindTransfer—lpszDestAddress parameter can contain a directory URI • lineForward—dwDestAddressOffset in the lineForward structure can now point at a destination address • lineRedirect—lpszDestAddress parameter can contain a directory URI Message Sequence Charts There is no change to the message sequence. Backwards Compatibility No backwards compatibility issues. Cisco Unified TAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs 103 Features Supported by TSP URI Dialing