G.992.5 Annex M
Template:ADSL standards This is an ITU (International Telecommunication Union) standard, also referred to as ADSL2+. This extends the capability of basic ADSL by doubling the number of downstream bits. The data rates can be as high as 24 Mbit/s downstream and 3.5 Mbit/s upstream depending on the distance from the DSLAM to the customer's home.
The main difference between this specification and ITU G.992.5 (ADSL2+) is that the upstream/downstream frequency split has been shifted from 138kHz up to 276kHz, allowing upstream bandwidth to be increased from 1 Mbit/s to 3.5 Mbit/s