A system of digital transmission standards introduced by the Bell System to multiplex multiple voice channels over twisted pair wire. The fundamental unit is the T1 line, which carries 24 digitized voice channels at 1.544 megabits per second. Higher tiers, like T3, bundle multiple T1s together for long-haul trunking.
Heard on the job
The customer is complaining about latency, so we need to check the framing on their T-carrier circuit.
Related terms
Supergroup
A multiplexed bundle of 60 voice channels in traditional analog carrier systems.
Baseband
The original frequency range of a transmission signal before it is modulated onto a higher-frequency carrier wave.
Time division
The multiplexing of multiple signals over a single channel by assigning each a distinct time slot.