Cisco CTI OS .NET Toolkit Release 8.5(2) introduces support for application development using Microsoft Visual Studio .NET 2010 and the .NET 3.5 framework. Existing .NET 2.0 controls do not need to be modified. Additionally, the CTI .NET CIL supports Visual Studio .NET 2010.

Note that Visual Studio 2010 by default uses Framework 4.0 You must change the framework for your CTIOS 8.5(2) .NET Cil project to use the .NET 3.5 framework.

UCCE 8.5(2) Release Notes