Packet switching versus circuit switching

• 1 Mbit link

• each user:

  • 100Kbps when “active”
  • active 10% of time

• circuit-switching:

  • 10 users

• packet switching:

  • with 35 users, probability > 10 active less that .004

Packet switching allows more users to use network!

N users

1 Mbps link

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