G.lite is a modulation profile which can be selected on a DSLAM port by an ADSL provider and provides greater resistance to noise and tolerates longer loop lengths (DSLAM to customer distances) for a given bandwidth.
Most ADSL modems and DSLAM ports support it, but it is not a typical default configuration.
[1] The G.lite specification was an accelerated ITU-T effort to drive interoperability among vendors and was facilitated by the Universal ADSL Working Group, or UAWG.
Intel, Compaq and Microsoft were able to rally the support of all of the US RBOCs and five of the largest international carriers (NTT, British Telecom, France Telecom, Deutsche Telekom, and Singapore Telecom), collectively representing the Promoters, to drive the major communications equipment manufacturers (the Supporters) to demonstrate interoperability of products based on the G.lite specification at SUPERCOMM in June 1999.
Adopters represented the majority of the remaining companies in the communications industry that were committed to supporting the new technology specification.