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
InfiniRoute Networks Inc. provides fully managed Voice over IP (VoIP) peering services for wireline and wireless carriers who need PSTN-quality VoIP connections to high-growth traffic regions worldwide.