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).
a.k.a. BillBery
billing with dynamic routing, LCR, PLM, analysis features and VoIP hosting support.