VoIP usually charges at monthly bill. Some are prepaid and some are plans. There are several kinds of plans and pricing of VoIP. check here http://www.ringcentral.com/plansandpricing/ringcentralfax.html#
VoIP charges is monthly. It depends on how many lines your need is. Check this for pricing list: http://www.ringcentral.com/plansandpricing.html
Example of PC based VoIP are skype VoIP, Yahoo Messenger VoIP, MSN VoIP, and lot more of web browser online chat application.
VoIP has different charges from telephone bills, but its not necessary to have telephone to use VoIP. VoIP needs only internet to make and receive calls.
Yes but the charge is different unlike when voip phones call to landlines will have same charges.
Most of the companies and businessman uses voip to save more charges in dealing international calls.
VoIP server has no radius since it is based via internet. As long as there is a connection of internet VoIP can be used too.
Services manage in voip are the calls usually came from outside the country or international calls.
Most VOIP service providers offer international service included in their packages for no additional charges. VOIP is the preferred method of phone service for someone who places a lot of international calls due to the pricing.
They are using a phone based on VoIP technology. Usually the phone uses a USB instead of a normal jack to connect for calls.
Charges inferred by something are those that are assumed or believed to be true based on available evidence or logic, even if they have not been proven conclusively. These charges are usually based on indirect or circumstantial information rather than direct proof.
It is possible to have a VOIP in your home. You must start out by having high speed internet. Check out VOIP based websites to see how you can purchase one for your home.
There are many companies that provide VoIP phone services. Based on review, one would discover that the top ranked VoIP companies are 'Phone Power' and 'ITP'.