3cx phone drop call?

[veriyaz]

I installed Windows 8 client for the voip phone.
I've written Dropcall method code, but it isnt working.
Code Example File Password: 12345

I want to do with 3CX Phone:
1- To accept an incoming call ( ringing phone number info needed)
2- Reject an incoming call
3- Make Call (now I can just do it)
4- Drop Call

Can You help me?
Thank you.