VIOP provides two types of services which are very important. These are:
.telephone to telephone: these are most important type of services. In this a telephone adaptor is plugged into dsl and then connected to analog telephone
.computer to computer: it is communication by internet from one
computer to another
VoIP provides recent services which is (wifi) wireless fidelity phones. These phones send out signals but on different frequencies. Before wifi phones usage was limited but today they
