knowledgelover 0 Junior Poster in Training

Hi there,
have anyone experience with the Telephony API, and can help please?,
I have googled about it, and I get downloaded all possible files but I still having problem in understanding some of the connectivity issues,
should the PBX I am using in system be compatible with the JTAPI, I am using Asterisk,
phones in the telephony system should too?

please any help is appreciated,
thanks in advance,