The Future: Frame Relay and/or ATM?

• Frame Relay is a newer packet switching technology that transmits data faster than the currently popular X.25 standard.

• It defines a data link layer protocol (how frames of data are assembled and routed through a data network)

• no error control

• negotiates committed information rates and maximum allowable rates.

• ATM is similar to frame delay except that

  • 1. it uses fixed length packets (more suitable for voice transmissions)
  • 2. ATM is scaleable (it is easy to multiplex ATM circuits into faster ATM circuits)

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