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SNR / attenuation, before after

ady
Grafter
Posts: 289
Registered: 25-09-2007

SNR / attenuation, before after

hey (looking back at my previous posts on my SNR/atten)

before ring wire removal

Attenuation (dB): 44.5 / 31.5
SNR Margin (dB): 13.5 / 7.5 (17-19 nights)
500-900kb synch rate


after removal
Attenuation (dB): 60 <<<<
SNR: 12
1.5-1.6mb synch rate



i still am question what has happened, i thaught attenuation was not surpose to change, but i have got + 15 all of a sudden

if this didnt increase so much, then i could be getting 3mb shouldnt i?


any ideas on what has caused this huge jump
9 REPLIES
Community Veteran
Posts: 14,469
Registered: 30-07-2007

SNR / attenuation, before after

Have you removed the ring wire and its corresponding twisted pair wire from both ends, including from any junction boxes in between the master socket and where you connect your router/modem?

Also check you have not disturbed any of the remaining wires.

Are you on LLU (12dB SNR suggests you are as that s the min for it). In which case you are not going to get much higher as its the SNR, not the line attenuation that is the key for LLU/MaxDSL.
ady
Grafter
Posts: 289
Registered: 25-09-2007

SNR / attenuation, before after

well i seriously thaught i wasnt, but...

- how do i check (LLU)

i was told when raising a ticket that my attenuation was to high for my SNR to be increased, which links back to this thread (40 atten. upto 60. )


my modem is connected directly to test socket right now,

should i reconnect the 2 adsl wires going right into the test socket ?
Community Veteran
Posts: 14,469
Registered: 30-07-2007

SNR / attenuation, before after

Are you saying the stats you posted are what you get from the test socket - the test socket being the one behind the removal lower part of your master socket?

You should not touch anything within the master socket other than on the removable part. The 2 wires you refer to are the ones that connect your house to the exchange and should not be fiddled with.
ady
Grafter
Posts: 289
Registered: 25-09-2007

SNR / attenuation, before after

ye all i touched is the removable part

i still get about the same without using test socket, just like 1.4-1.6mb
ady
Grafter
Posts: 289
Registered: 25-09-2007

SNR / attenuation, before after

hey so ive just got this ticket saying:

BT want to send an engineer to check your fault. Visit help.plus.net and tell us your availability. Slots: Mon-Fri 0800-1030 1030-1300 1300-1530.



does this actually mean an engineer will come to my house and do some stuff ?

will they only look at the master socket ? or all extension sockets etc?
Community Veteran
Posts: 14,469
Registered: 30-07-2007

SNR / attenuation, before after

BT's responsibility stops at the master socket (actually the test socket) unless they actually did the house wiring (unlikely nowadays).
ady
Grafter
Posts: 289
Registered: 25-09-2007

SNR / attenuation, before after

kool, so do u think i will have to pay for anything ?

what do you think they might do
Community Veteran
Posts: 14,469
Registered: 30-07-2007

SNR / attenuation, before after

If they don't find a fault, you pay, if they do, you don't pay.
ady
Grafter
Posts: 289
Registered: 25-09-2007

SNR / attenuation, before after

omg lol how much you no ?

ive been told on another forum its £70 -.-