hi, can any body expain how net2phone works. on which pricipal it works. what is the difference between ip telephony and internet telephony. what is the role of gateway and gatekeeper. suppose i am calling from U.A.E to australia then how my authentication is being made from net2phone and how call proceeds. etc etc. during all this procedure what are the necessary compnents. thanks mr. wonder and also confused:)) Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=11242&t=11242 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]