ISDN

Leased lines (T1, T2, T3)

Cable
Le linee dedicate (T1, T2, T3) As linhas alugadas (T1, T2, T3) line sharing (T1,T2,T3) Les lignes louées (T1, T2, T3) Líneas dedicadas (T1, T2, T3)

Leased lines

"Leased" lines enable transmission of data at medium and high speeds (64 Kbps to 140 Mbps) by point to point or multipoint connection (Transfix service).

In Europe, there are five types of lines distinguished according to their speed:

  • E0 (64Kbps)
    • ,
  • E1 = 32 E0 lines (2Mbps)
    • ,
  • E1 = 128 E0 lines (8Mbps)
    • ,
  • E3 = 16 E1 lines (34Mbps)
    • ,
  • E4 = 64 E1 lines (140Mbps)

In the United States, the concept is as follows:

  • T1 (1.544 Mbps)
  • T2 = 4 T1 lines (6 Mbps)
    • ,
  • T3 = 28 T1 lines (45 Mbps)
    • ,
  • T4 = 168 T1 lines (275 Mbps)

Why do you need a leased line?

As a general rule, to get an Internet connection, you must pay a subscription to an Internet Service Provider or online service. The cost of this connection depends on the data transfer speed.

Last update on Thursday October 16, 2008 02:43:20 PM.This document entitled « Leased lines (T1, T2, T3) » from Kioskea (en.kioskea.net) is made available under the Creative Commons license. You can copy, modify copies of this page, under the conditions stipulated by the licence, as this note appears clearly.

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