Concerning practical implementation, the VoIP gateways have proven to be the best. Many companies are successfully using the IP telephony thanks to its two main characteristics
Decrease in international and long distance call cost expenditures
Stable communications between company’s offices throughout different cities and counties
We are a VoIP wholesale and retail provider and we have been in the business for 4 years. And we are interconnected with more than 300+ Carriers including Tier 1 Company’s.