Circuit Switched WAN connection

• dedicated circuit created
• connects two or more parties
• no need for source and destination packet information
• circuit switched transmission options:
  • POTs
  • Switched 56k, 64k, 384k
  • Switched T-1
  • ISDN
  • leased lines (circumvent co switch facilities)
    • DDS Digital 1200bps-56k
    • DS-0 (64k)
    • Fractional T-1
    • T-1
    • T-2
    • T-3
    • SONET