DEFINITION: Also see the T-carrier system, of which the T1 is a part.
The T1 (or T-1) carrier is the most commonly used digital transmission service in the United States, Canada, and Japan. In these countries, it consists of 24 separate channels using pulse code modulation (PCM)
Definition continues below.
T-1 CARRIERS DEFINITION (continued): signals with time-division multiplexing (TDM) at an overall rate of 1.544 million bits per second (Mbps). T1 lines originally used copper wire but now also include optical and wireless media. A T1 Outstate System has been developed for longer distances between cities.
It is common for an Internet access provider to be connected to the Internet as a point-of-presence (POP) on a T1 line owned by a major telephone network. Many businesses also T-1 Carriers definition sponsored by SearchNetworking.com, powered by WhatIs.com an online computer dictionary
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