A T1 line is a digital internet connection that can carry up to 192,000 bytes per second -- equivalent to 60 times more data than a 56k dial-up line.

A normal phone line used for home or business is composed of a pair of copper wires. When you use a modem with this line, it can transmit data around 30 kilobits/second.

A T1 is a fiber-optic line capable of carrying 24 digitized voice channels, or it can carry about 192,000 bytes of data per second, which is about 60 times faster than a modem. It also provides consistently reliable and stable connections and is more reliable than a modem. Additionally, a T1 is capable of serving all users' internet connections in most offices.