ATM

• Like Frame Relay:

  • Packet switched
  • Virtual circuits
  • Dedicated (Always On) Connections

• Unlike Frame Relay

  • Much faster top speed
    • 1 Mbps, 25 Mbps, 45 Mbps, 156 kbps, 622 kbps, several Gbps
  • May offer quality of service (QoS) guarantees
    • Maximum latency for time-critical applications
    • Exact cell-by-cell timing

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