E1/T1
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).
Small enterprises should really enjoy the Grandstream GXP280 and GXP285 devices, due to mixture of high quality of sound, graphic LCD display and rich list of business features.
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