cyril7: Hi, check them all, although Annex M is not used here so leave that off.
What filters are you using are you using lots of inline filters as opposed to a central filter (you may have stated this detail earlier cannot remember) but speed can often vary when a non central filter setup is used.
I believe you can plug the adsl modem straight into the jack, right
cyril7: You would be better off leaving the Dynalink to do all modem/router functions and just use the Netgear as a Wireless AP using one of its LAN ports rather than the WAN port, also turn its DHCP server off only use the Dynalink for that.
Finally I am on ADSL2+, got everything sorted.
Best speed I got was with Dynalink RT1320, tried atleast 6 different brands and models