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T1

 

Type of broadband telecommunications connection (see broadband technology) used especially to connect Internet service providers to the Internet's infrastructure. Developed by Bell Labs in the 1960s, the "T-carrier systems" offer entirely digital, full-duplex exchange of data over traditional wire, coaxial cable, optical fibre, microwave relay, or other communications media. The T1 lines carry about 1.5 megabits of data per second, while the related T3 lines carry over 40. However, such systems are generally too expensive for individual network users, who turn instead to ISDN lines, cable modems, DSL connections, or some form of wireless or satellite system for high-speed Internet access.

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T1, T01, T.1 or T-1 may refer to:

Contents

Technology

  • T1 font or Cork encoding, a character encoding used in computer programming and telecommunications
  • UltraSPARC T1, a microprocessor
  • Digital Signal 1, a telecommunications standard, sometimes called a "T1 Line"
  • A 5mm T1 LED, a common size for through-hole devices

Biology

Mathematics

T1 spaces, topological spaces satisfying the T1 separation axiom. Also called Fréchet spaces.

Vehicles and transportation

Automotive

Aircraft

Rail transport

rapid transit
tramways 

Roads/public transport routes

Ships

Other transportation

Other meanings

  • T1 Aquarii, a star
  • T1 Carinae, a star
  • T1 General, a tax form used in Canada
  • T1 space, a kind of topological space
  • T-1 (Terminator character), a fictional robot in the Terminator film franchise
  • T-1 visa, a type of visa allowing certain victims of Human trafficking to remain in the United States
  • DSC-T1, a 2004 Sony Cyber-shot T series camera model
  • AC NM AE T1 mine, a Brazilian minimum metal anti-tank blast mine
  • AP NM AE T1 mine, a Brazilian small minimum metal anti-personnel mine
  • G7a/T1, a WWII German standard issue torpedo
  • Module T1, an adventure module for the fantasy role-playing game Dungeons & Dragons
  • Soyuz T-1, a 1979 space mission
  • Tour T1, an office skyscraper in La Défense, Paris, France

and also :

  • A514 steel, a type of steel
  • TORRO scale, a level on the tornado power scale
  • t.1 : the first tome of a book series

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T-span (technology)
T1/E1 (technology)
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Britannica Concise Encyclopedia. Britannica Concise Encyclopedia. © 2006 Encyclopædia Britannica, Inc. All rights reserved.  Read more
Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "T1" Read more