/mcpProgress State Converted to Disconnect State If an outbound call is initiated through the API to an unallocated directory number across the European PSTN, the application will perceive the ConnFailedEv event with the cause as CiscoCallEv.CAUSE_UNALLOCATEDNUMBER. For the US PSTN, the application may not see any event. To make the behavior consistent across the European and American PSTNs and also to address backward compatibility issues, a new service parameter UseProgressAsDisconnectedDuringErrorEnabled was added to the jtapi.ini file starting with JTAPI Version 1.4(3.21), which, when enabled (1 = enable; 0 = disable; the default is disable), causes applications to perceive ConnFailedEv in both cases. Q.Signaling (QSIG) Path Replacement QSIG Path Replacement, a network feature, optimizes the real-time protocol (RTP) path when calls are transferred or forwarded to other PBXs that are connected through QSIG trunks. When path replacement is in progress, a small window of time exists when the feature requests from applications would be ignored and JTAPI would throw an exception to the application. The Global Call ID or the call is changed when the RTP path is optimized with a direct path between the starting terminating PBXs. JTAPI provides new interfaces to monitor the call. QoS Support QoS support is enhanced in this release to enable QoS (DSCP marking) in both directions of the application <--> CTIManager connectivity. In previous releases it was enabled in only one direction: CTIManager --> application. The DSCP (QoS) values for both directions of the link are set by the “DSCP IP CTIManager to Application” value in the CTIManager service parameters. The default value is CS3(precedence 3) DSCP (011000). The “DSCP value for Audio calls” service parameter is the recommended QoS value for audio calls. Thisvalue is exposed to JTAPI applications. You must perform one of the following setup procedures on the client machine for JTAPI QoS to work on Windows platforms. Procedure Step 1 If you are running Windows 2000, follow the steps in QoS Setup on Windows 2000, on page 141. Step 2 If you are running Windows XP or Windows Server 2003, follow the steps in QoS Setup on Windows XP Server 2003, on page 141. Cisco Unified JTAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs 140 Features Supported by Cisco Unified JTAPI Progress State Converted to Disconnect State