NicatioNs> (DSVD) A techNique supported by some modems for multiplexiNg compressed speech with digital data for traNsmissioN over a Normal telephoNe liNe. DSVD isN' t staNdardised yet, so geNerally you have to have the same make of modem at both eNds for it to work. [How does it work? Which modems? RefereNces?] (1997-06-05)