A European format for digital transmission. E1 supports signals at 2 Mbps (32 channels at 64Kbps, with 2 channels reserved for signaling and controlling), versus the T1, which carries signals at 1.544 Mbps (24 channels at 64Kbps).
Dinstar DWG2000C-4/8G is a multifunctional VoIP / GSM gateway that operates on IP and GSM networks, which provides flexible network configurations, extensive features and good sound quality.