A word about AAL1

AAL1 is pre-existing PW carrying TDM over ATM networks

In core network

• Despite statements to the contrary in this WG

there have been major deployments

• Growth rate of 40 % per year (even now)

  “AAL1 is flourishing in the backbone”
  

• 2G cellular backbone

In access network (DLC)

• AAL1 DLC deployment is growing

• Collector network for DSL

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