DSL – Digital Subscriber Line
DSL describes a physical layer technology that can be utilized across the last mile connectivity between a customer’s premises and the Local Exchange or Central Office. Typically based on a copper twisted pair transmission medium, DSL can come in a variety of formats. A particular example of this is ADSL2+ , which employs techniques such as DMT between the ATU-R (ADSL Termination Unit – Remote) and the DSLAM.
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