How T1 achieves 1.544 Mbps speed?

T1 lines achieve a speed of 1.544 Mbps through the use of multiplexing technology, specifically through Time Division Multiplexing (TDM). This allows a single physical line to carry multiple voice and data channels by dividing the signal into time slots, where each slot is allocated to a different channel. The T1 line consists of 24 channels, each capable of transmitting at 64 Kbps, which collectively provides the total bandwidth of 1.544 Mbps. This reliable and consistent speed makes T1 lines a popular choice for businesses requiring dedicated internet and voice services.