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).
In January 2012, the North American division of Panasonic, a market leader in phone systems for small businesses announced a new desktop SIP-phone KX-UT670 and thus expanded its line of SIP UT phone series. This newest offering is the first desktop SIP – phone made by Panasonic, with an open source operating system allowing you to deploy integration solutions for business communications.