Wide Area Networks
Connect geographically dispersed LANs
May use many different media
- Ordinary Phone Lines: 1200 Baud and compression to 56k bps
- Integrated Services Digital Network (ISDN)
- Digital lines: T1 (1.54 mb), T3 (fiber, 45mbs)
- Microwave (T1 or faster)
- Switched:
- Frame Relay(T1),
- xDSL (128 kbps - 1.2 mbs)
- ATM (622 mbs)