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
Many phone companies offer "cheap" long distance call rates. However, Dukatech goes beyond that, by helping individuals, organizations and business clients get the true value of their money.