Fixed Links

• Backbones: 45 Mbits/s or 34 Mbits/s ==> 155 Mbit/s and Gigabits/s
  Transoceanic fibers between continents ==> Gbit/s
• Major sites link to backbones:T1 (1.5 Mbits/sec) or E1 rate links (2 Mbits/sec)
  ==> [increasingly 34 Mbits/s or 45 Mbits/s - even 155 Mbit/s in some metropolitan areas]
• Individual users links: 28.8 Kbits/s and ISDN (128Kbits/s)
  ==> ASDL (n Mbits/s)