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Definition[]

DS-1 (also known as T-1) is

a T-carrier signaling scheme devised by Bell Labs. DS-1 is a widely used standard in telecommunications in North America and Japan to transmit voice and data between devices. DS-1 is the logical bit pattern used over a physical T1 line; however, the terms DS-1 and T1 are often used interchangeably. [A T1 line] [c]arries approximately 1.544 megabits per second of data.[1]

Overview[]

"This is the standard for digital transmissions in North America. Usually delivered on fiber optic lines."[2]

References[]

  1. The Broadband Availability Gap, OBI Technical Paper No 1, Glossary, at 131 (full-text).
  2. FFIEC IT Examination Handbook, App. C, Glossary (full-text).
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