A T3 Line is an Internet connection providing high-speed T3 bandwidth of 45Mbps delivered over fiber optic or coax cables. T3 lines are used by businesses to provide reliable, dedicated T3 connection for internet access as well as other applications including email, file sharing, web hosting, data backup, video, or VPN access. A T3 line is superior to cable or DSL Internet access because it offers higher bandwidth speeds and a Service Level Agreement with guarantees on T3 speed, performance, uptime, and repair. A T3 connection can also be configured by a T3 provider to carry voice services since a T3 has a 28 T1 line capacity. T3 lines are also known as an Internet DS3, T3 Line, or DS3 Circuit.