I would like to know exact what requirements you must have when you want to use Voip in a company or something like Skype.I know what is VoIP but I don't know about the protocols,gatekeepers,softwares, hardwares and switches or connections to make when you want to setup VoIP.Please help me I only know that there are services like PC to Phone and PC to PC but I don't have any idea how to set it up.


nnoo