IDSL
Updated: 04/26/2017 by Computer Hope
IDSL (integrated digital subscriber line) is a technology used to provide DSL (digital subscriber line) over pre-existing ISDN (Integrated Services Digital Network) lines. Although IDSL lines usually only carry data, they have the benefit of always being on, thus eliminating all connecting delays. Also, their transfer rates are slightly higher than ISDN @ 144 versus its 128 Kbps.