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
Citel’s Portico TVA enables enterprises to connect existing voice infrastructure to a new VoIP platform, saving up to 70% over other VoIP migration alternatives.Citel’s products help eliminate common objections.