As I've kind of hijacked the Sky BB 16meg thread from around page 5 onwards
http://www.cableforum.co.uk/board/sh...2&postcount=68
I thought I'd start a new one, just for my noise margin issues (& anyone else's if they want). I may try splitting & merging at some point, when I've got time to comb through the Sky 16meg thread.
So, from here onwards:
http://www.cableforum.co.uk/board/sh...8&postcount=83
Quote:
Originally Posted by Chrysalis
Matt what I should have told you to do is take the faceplate off and try the test socket, as this bypasses all the extenstion cabling stuff.
It should be easy, 2 screws come off and the front comes off like a lego piece, behind that you see another socket like the socket on the faceplate, plugin the router there as normal and see if the stats improve.
If they do then you need to do a more permenant fix in removing the ringwire.
The 4mbit you getting isnt a big shock considering your noise margin.  Welcome to the world of adsl where its entirely possible to only burst to a fraction of the max speed. |
Ah, hence dragon's mention of the faceplate.
Never mind, I can still try it.
Googling "removing the ringwire" led me to
http://www.kitz.co.uk/adsl/lowSNR.htm &
http://www.clarity.it/telecoms/adsl_faceplate.htm amongst others.
So, possible options could be....
1) Remove the ringwire. (I assume the phones still ring, & it's easy to reconnect if/when I move properties?). EDIT: Yes they do - the phone ring is apparently powered by the microfilter so the ringwire (orange, IDC terminal 3) is completely unnecessary (& is a cause of problems anyway - poor noise margin).
2) Fit a filtered faceplate to the master, & connect the router to it's ADSL socket. [awkward position though, & an ADSL extension cable would be very inconvenient].
3) Fit a modified filtered faceplate, such as the one Clarity sell, which has bits on the back to hardwire an ADSL extension to if you don't want to just plug the modem/router into the front ADSL socket (as well as the normal bits a filtered faceplate has to wire in normal phone extensions at the back). A new extension could then be run fed from the ADSL connections on the back of the faceplate - however, like option 2, an extension is not convenient.
Current router stats, Sky BB "up to 16mbps":
Quote:
|
Originally Posted by Netgear DG834GT "Sky Broadband Box"
ADSL Link Downstream Upstream
Connection Speed 5728 kbps 768 kbps
Line Attenuation 41.0 db 28.0 db
Noise Margin 6.1 db 14.0 db
|
Previous router stats, Firefly BB 2mbps:
Quote:
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Originally Posted by Netgear DG834G v 2
ADSL Link Downstream Upstream
Connection Speed 2272 kbps 288 kbps
Line Attenuation 39 db 12.5 db
Noise Margin 17 db 28 db
|