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
Telecall guarantees all types of carrier customers expanded reach, capacity, and quality. Telecall is a reliable partner to Carriers that need to deliver competitively priced connectivity around the globe.