Switched from ADSLMax to ADSL2+ today on TalkTalk LLU via XILO.
On ADSLMax i had an 8128 sync @ 6dB noise margin with a downstream line attenuation of 33dB (i am 2.4km from the exchange).
Prior to moving over i was hoping for 12-13mbps sync on ADSL2+ looking at the graphs and inputting my ADSLMax line details on a couple of websites.
Coming home tonight my sync was barely over 8128 @ 12dB noise margin (XILO default) but since that over 2 hours my noise margin had dropped ~3dB (monitored with Routerstats). Is that normal? On max it varied by 1dB maximum over a 24 hour period.
I've rebooted my router (Billion 7800N) and used its onboard SNR tweaking to reduce the target noise margin to 6dB. My new sync speed is 9770kbps, about 2000-3000kbps short of what i was reasonably expecting (websites and graph said expect anything up to 14000kbps).
DMT Status No Defect
Operational Mode ADSL2+
SNR Margin(Upstream) 12.4
SNR Margin(Downstream) 6.3
Line Attenuation(Upstream) 20.2
Line Attenuation(Downstream) 37.0
I'm using the latest 7800N firmware (1.06e) and have ADSL2+ and Annex L set only (did have G.DMT etc also selected but unticking them has made no difference).
I dont see how i can get anymore......am i either unlucky or are the ADSL graphs pretty inaccurate?
Or will a resync in the daytime give me another 2mbps...wishful thinking no doubt!!
(note:- I'm using a BT ADSL faceplate filter and ADSLNation Pro+ cable to the router, a few phone extensions are run from the front of the faceplate).
Just went to post this and it dropped sync for a few minutes.....maybe i should of stuck with Max!!