Working with the Billion 7800 NXL router

A collection of information I've gathered while trying to eak the maximum speed-vs-reliability out of our ADSL connection

I settled on the Billion 7800 series after trying a variety of routers over a long period, as they seem to be the best performer on our 4plus km Telstra soggy-string "ADSL 2plus" connection

Why do modems so rarely sync back UPwards ?
7800(n) series SNR Tweak Values
ADSL2+ Sync Speeds
Tweaking Billion ADSL Mode sync settings
ADSL Theory
How to interpret your adsl Line Stats
Find your ADSL sync speeds
SNR Margins
Billion 7800NXL 

Is it possible to vpn to my 7800n router from my laptop and use the wol function to wake one of my machines on my lan to access some files?

login to router over the internet
Setting up a VPN on a 7800N 
DSL speed vs distance calculator This ADSL theoretical speed calculator seems fairly accurate for our situation as attenuation changes

Tweaking SNR for Billion 7800NXL router

I really like the Billion 7800 NXL I recently upgraded to at the home end of a very long and soggy wet piece of Telstra string which they provide under the guise of and ADSL 2+ connection !

On good days I can get almost 2.5Mbits streaming ... wooo-hoo!

On one exceptional occassion I managed 3.5Mbits for almost two days before the connection went pear-shaped again !

The recently (Jan16) installed NBN FTTN box is literally JUST around the corner ... oh pleeeeease! 

Setting the SNR

AFTER much experimental tweaking of the SNR setting to get the best balance btween speed and stability, the sweet spot for me seems to be an SNR of 3.5 or 3.4 which gets me as close as possible to the Attainable Rate (Kbps) ... anything less than that and the RS Uncorrectable Errors start to go through the roof and the real data throughput falls away badly.

SNR tweaking via URL

I found the following reference useful to copy and paste into the url rather than having to browse and enter through the UI, or when it won't let you put less than 1 in via the UI.
(obviously you use the correct IP address for your router)

6 – http://192.168.1.254/snr.cmd?snr=96
5 – http://192.168.1.254/snr.cmd?snr=80
4 – http://192.168.1.254/snr.cmd?snr=64
3 – http://192.168.1.254/snr.cmd?snr=48
2 – http://192.168.1.254/snr.cmd?snr=32
1 – http://192.168.1.254/snr.cmd?snr=16
==== following can only be entered via URL not the UI =====
0.5 - http://192.168.1.254/snr.cmd?snr=8
0.3 - http://192.168.1.254/snr.cmd?snr=4
0.1 - http://192.168.1.254/snr.cmd?snr=2

Other router url's I've found useful include:

http://192.168.1.254/wan_trafficReceive.html - inbound WAN traffic being pulled down
http://192.168.1.254/snr.html - the SNR tweaking UI page
http://192.168.1.254/statusadsl.html - as shown below
http://192.168.1.254/t3g.html - 3/4G USB dongle stats, including signal strength
http://192.168.1.254/dhcpinfo.html - the routers DHCP lease table
http://192.168.1.254/arpview.cmd - the routers ARP table
http://192.168.1.254/wol.html - the routers Wake On LAN page 

My typical stats shown here for others reference