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).
Symmetric Broadband, a Peer 1 Network company, was founded to provide a high performance VoIP network utilizing Peer 1`s facilities and fully redundant dedicated IP network.