A method for taking analog audio signals, like the kind you hear when you talk on the phone, and turning them into digital data that can be transmitted over the Internet.VoIP Technology Advantages:1. Enhancement of phone calls quality.2. Connect any remote site to the university exchange by using IP technique like Connecting the university with its health centre in Irbid without the use of the infrastructure of any communication company, like what was in the past, but using the computer network infrastructure which is already exist.3. Users may use their IP-phones anywhere, while they are keeping their phone numbers.4. Support SIP protocol, so that we can use software phone and make a normal call.