Following are the range of Gateways :
IP Media Gateways
Digium's VoIP gateways are industrial grade appliances designed to bridge the gap between TDM (T1/E1/PRI) and IP networks. Built on a powerful combination of the Asterisk open source communications engine and a state of the art embedded platform, the gateways provide the best value for Asterisk connectivity.
Digium offers 2 gateway models.The G100 appliance and the G200 appliance