Exception in Phone Application using Setup Xfer

Oct 20, 2015 at 7:45 AM
In a test with the 'Phone' component of the ATAPI_85509 package I've some trouble with Call Transfer.
When initiating a Setup Xfer I get an Exception lineSetupTransfer failed 0xFFFFFFFF80000048 Message. This exception is thrown after waiting for line reply in SetupTransfer (TapiCall.cs) procedure. The TSP Provider (Alcatel) works in another application with the Xfer correctly.
Does anyone know the reason for this failure?
Thanks for help.