資料來源 : Free On-Line Dictionary of Computing

Single-line Digital Subscriber Line
     
         (SDSL, or Single-pair High Speed
        Digital Subscriber Line, S-HDSL) A form of {Digital Subscriber
        Line} similar to {HDSL} but providing {T1} or {E1} connections
        over a single {twisted-pair} copper line.
     
        (1998-05-18)