2N BlueTower is the optimal solution for medium-sized companies with a high frequency of calls to mobile networks. This is a GSM / UMTS gateway, which can significantly reduce the cost of telephone calls. Its efficient router is able to find the cheapest connection route and will always use the most favorable direction (SIM-card).
maple4VOIP is a pan-European distributor/e-tailer of premier VOIP Appliance, Gateway, IP PBX, Router, and Voice/Data Card hardware telephony technologies and solutions.