Fractional T3   A fraction of a T3 line, allowing the user access to a portion of the line until upgrading to a full T3 line is necessary - between 3 and 45Mbps. Increments of 3 Mbps are typically provided. A Full T3 line is an extremely fast high-bandwidth connection (similar to a T1 but even faster), capable of transferring data at 44,736,000 bps (or 44.21 Mbps). A T3 line is equivalent to 28 T1 lines. This is more than enough speed to provide full-screen, full-motion video. T3 lines are most commonly used by ISPs and large networks.