ITU G.992.3/4

ITU G.992.3/4

ITU G.992.3 is an ITU (International Telecommunication Union) standard, also referred to as ADSL2. It optionally extends the capability of basic ADSL in data rates to 12 Mbit/s downstream and 3.5 Mbit/s upstream (with a mandatory capability of ADSL2 transceivers of 8 Mbit/s downstream and 800 Kbit/s upstream). Actual speeds may reduce depending on line quality - usually the most significant factor in line quality is the distance from the DSLAM to the customer's equipment.

ITU G.992.4 is a standard for splitterless ADSL2 with data rate limited to 1.536 MB/s downstream and 512 kbit/s upstream.

ee also

*ADSL
*ADSL2+
*List of device bandwidths

External links

* [http://www.itu.int/rec/T-REC-G.992.3/en ITU-T Recommendation G.992.3 : Asymmetric digital subscriber line transceivers 2 (ADSL2)]
* [http://www.itu.int/rec/T-REC-G.992.4/en ITU-T Recommendation G.992.4 : Splitterless asymmetric digital subscriber line transceivers 2 (splitterless ADSL2)]
* [http://www.dslprime.com/a/adsl21.pdf ADSL2 & ADSL2+ White Paper] (PDF) (Aware)


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