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).
BW535P is a high-quality IP phone for advanced users and for office workers, designed with the expectation of maximum productivity and efficiency of daily work.