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
Solution de téléphonie IP / VOIP Forfait illimité fixe et mobile en France et en Europe, Forfaits 100% illimités vers tous les opérateurs 24h/24 et 7j/7.