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ITU G.992
ITU G.992.1
- This recommendation specifies the physical layer characteristics of the ADSL interface to metallic loops
ITU G992.2
- The recommendation includes procedures to allow provisioning without the need for "splitters", typically installed at the ingress to the customer premises. Since there is no splitter, normal operation of the POTS telephone will cause reductions in the rate of the data service provided. Additionally, power management procedures and link states are specified to achieve power savings at the central office and customer premises.