DSL, or xDSL (Digital Subscriber Line), is a family of technologies that provide digital data transmission using the wire infrastructure of a local telephone network, for broadband access.The DSL family of technologies include ADSL (Asymmetric DSL), SDSL, (Symmetric DSL), VDSL (Very high speed DSL) among others.

RADVISION’s protocol stacks and client solutions are especially suitable for developing DSL VoIP products.