Christian - Thanks for posting the translation. This is however something most of us know, it is part of the T1E1.4, a Subcommittee devoted to interoperability of DMT.
Some may not know of the Subcommittee, and we can always use the rerun
for those not up t date. I've add the clip below to help further expain. Thanks for the translation, and keep digging.
Do you translate in German?
JW@KSC
(CLIP)
Of particular significance, four major telephone companies (GTE, Ameritech, Pacific Bell and Southwestern Bell) stated that it was premature to consider adding additional line codes to the standard until it is clear what the market will provide with DMT-based solutions. In addition, three major silicon providers in the DMT ADSL market (Alcatel, Motorola and Analog Devices), along with DMT system providers (Alcatel, Ericsson, Aware, Orckit and Amati Communications) presented arguments against adding additional line codes to the standard. In making these arguments, the Subcommittee members cited that the reasons why DMT was named the standard -- its ability to cover more operating lines and provide higher data rates with fewer errors -- still hold true today. In addition, multiple line codes would virtually eliminate the possibility of interoperability among system. Further, the process of adding
another line code to the standard would cause significant delay, bogging down the progress of the committee and possibly placing ADSL technology at a disadvantage against other access technologies it is competing with for marketshare.
Attesting to DMT's performance is the fact that Amati Communications Corp DMT-based ADSL modems have been involved in tests of 2 Mbps and 4 Mbps video-on-demand (VOD) services being offered by PTTs in Europe and the Asia-Pacific Rim, as well as 6 Mbps trial in Australia of a service offering broadcast quality video to the home by Telstra (Telecom Australia). The company is also providing ADSL/DMT equipment in the current GTE Internet access trials in Dallas/Fort Worth, Texas and Redmond, Wash.
DMT's high data rate capability and unparalleled flexibility make it an ideal solution for today's hottest ADSL application -- high speed Internet access. In addition, because DMT-based ADSL was initially targeted primarily for VOD applications, it will be capable of supporting the industry as additional communications services such as videoconferencing and interactive multimedia are made available to the public, which will help ensure ADSL's long-term viability in the communications marketplace. In a still-uncertain market, where it is not yet clear which
broadband services will be in most demand from end users, DMT-based solutions will empower telcos with the ability to incorporate new services as they reach critical demand.
Through an annex to T1E1.413 that reflects European requirements, the European Technical Standard Institute (ETSI) also adopted DMT as the ADSL standard. This will help enable worldwide interoperability -- an important factor in the success of any technology. |
