Dinstar DWG2000C-4/8GSM, VoIP Gateway, CDMA Gateway, CDMA VoIP Frequency: CDMA 800MHz Wireless Port(s): Up to 8 Ports Dinstar DWG2000C-4/8GSM, VoIP Gateway, CDMA Gateway, CDMA VoIP DWG2000C-4/8G is full functions VoIP gateway based on IP and GSM network, which provides a flexible network configuration, powerful features, and good voice quality. It works for carrier grade, enterprise, SOHO, ...