What are the 5 types of digital dedicated lines?

The five types of digital dedicated lines include T1, T3, E1, E3, and fiber optic lines. T1 lines provide 1.544 Mbps, while T3 lines offer 44.736 Mbps, primarily used in North America. E1 lines, common in Europe, support 2.048 Mbps, and E3 lines provide 34.368 Mbps. Fiber optic lines can offer significantly higher speeds and bandwidth, suitable for extensive data transmission needs.