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
NTEL (Naujasis Telefonas) is an international telephony service provider in Lithuania.NTEL offers you an opportunity to call abroad at special rates which are lower than using fixed telephony or mobile network.