A T1 is a high-speed digital data transmission line, the most commonly used line in the T-Carrier System. T1 lines began solely as copper wire but now include fiber optic and wireless connections. A T1 carries 24 digital voice channels with a voice and data transfer rate of 1.544 Mbps, a rate many times faster than a traditional PSTN line.
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by Ian McLeod | Aug 13, 2020