G.992.3 Annex L

ITU-T G.992.3 Annex L is an optional specification in the ITU-T recommendation G.992.3 for ADSL2 titled Specific requirements for a Reach Extended ADSL2 (READSL2) system operating in the frequency band above POTS, therefore it is often referred to as Reach Extended ADSL2 or READSL2.

The main difference between this specification and commonly deployed Annex A is the maximum distance that can be used.

The power of the lower frequencies used for transmitting data is boosted up to increase the reach of this signal up to 7 kilometers (23,000 ft).

The upper frequency limit for READSL2 is reduced to 552 kHz to keep the total power roughly the same as Annex A.

However, this standard is implemented nationwide by the incumbent local exchange carrier France Telecom.