A consortium of companies dedicated to the development of the full potential of digital subscriber line (DSL) through defining the core technology, establishing advanced architecture standards, and maximizing effectiveness in deployment, reach, and application support. The DSL has been heavily involved in the global standardization of ADSL,ADSL2+, SHDSL,VDSL, and VDSL2. See Appendix A for contact information. See also ADSL, ADSL2+, SHDSL, VDSL, and VDSL2.