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hOme.beardedDonkey - SNIPPET: Settings in ADSL2/ADSL2+ modems (Billion BiPAC 7402VGO)
SNIPPET: Settings in ADSL2/ADSL2+ modems (Billion BiPAC 7402VGO) 
Recently my download speeds dropped dramatically. At first I thought my provider was capping my speed, but it seemed a consistant low speed no matter what I downloaded with or where I downloaded from. So I did a little googling and found some settings in my modem configuration that sped things up.

Here are some settings in an ADSL2/ADSL2+ modem that may help improve line speed and connection stability:

Coding Gain - the coding gain can be set to an auto setting (at least in my Billion router) but I found something occured whereby I would connect at the slowest speed possible. Moving this setting off auto and up to 7 (0-7 are available as options) increased my line speed from a real download speed of 250 kbps up to 600 kbps.

Increasing the coding gain can create connection instability in some cases. The TX Attenuation can be changed to adjust the syncing speeds and increase the signal-to-noise ratio. This means you line speed will drop a little but the connection stability will improve. ADSL2/ADSL2+ uses "Bis" settings, ADSL1 uses "DMT".

I didn't find much difference in the changing of the TX attenuation settings, but overall it decreased line connection speed, but actual download speeds were not affected.

Line speed and connection stability are affected by a number of factors. This is only one thing to check if you have a slow or unstable connection and should be closer to one of the last things you do to try to fix speed and stability problems. If you have a slow download speed or unstable connection, check all your hardware first and try to verify nothing has begun failing hardwarewise.

I changed these settings using my Billion BiPAC 7402VGO modem/router. Other routers may give a better connection overall and may not require you to change their settings.

As always, no responsibility.


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