I'm afraid you're not off to a good start with C#. Cisco has two ways of doing CTI: TAPI (which is native W32.. so best suited for C(++), VB, Delphi and the likes) and JTAPI (which is Java based).
If you type in "C# TAPI" into google, it'll get you to one or two C# TAPI wrappers which may do what you need to do though (but that doesn't change the fact that JTAPI would be easier to work with.. and as C# programmer you'd feel much more at home with the object oriented approach).
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...