cancel
Showing results for 
Search instead for 
Did you mean: 

SNR has dropped despite interleaving being applied.

Azagoth
Grafter
Posts: 620
Thanks: 3
Registered: 01-08-2007

SNR has dropped despite interleaving being applied.

It's got to the point now where the internet barely works due to this.  The downstream noise margin keeps fluctuating from a high of about 7.4 to 0.0 and even into minus figures at times.  I did have a ticket open due to the constantly DSL disconnecting and the support team applied interleaving.  That seemed to sort it out, but then the internet started to drop but the DSL stayed connected.  Now though, neither are dropping but the line is nigh on unusable.
--- DSL Information ---
DSL Driver Version:  AnnexA version - A2pB022g.d20e
DSL VPI/VCI:        0/38
DSL Status:          ShowtimeRetrain Reason: 8000
DSL Mode:            ADSL2+
DSL Channel:        FAST
DSL Upstream Rate:  440 Kbps
DSL Downstream Rate: 10043 Kbps
                      Down        up   
DSL Noise Margin:    0.2 dB      21.2 dB
DSL Attenuation:    34.0 dB      17.1 dB
DSL Transmit Power:  0.0 dBm    11.3 dBm
2 REPLIES
Plusnet Alumni (retired) orbrey
Plusnet Alumni (retired)
Posts: 10,540
Registered: 18-07-2007

Re: SNR has dropped despite interleaving being applied.

Hi Azagoth,
Looks like the fault ticket is still open at present, I'd recommend passing that back to our team who'll get it picked up and reraised for you. The line is definitely still dropping:
<img src="http://community.plus.net/visualradius/generated/image13843504289915.png"/>

Probably worth going with the engineer visit in all honesty, we might be looking at a REIN issue here possibly but whether that's the case or not the engineer will be the best person to investigate.
Azagoth
Grafter
Posts: 620
Thanks: 3
Registered: 01-08-2007

Re: SNR has dropped despite interleaving being applied.

It's started doing it again after a week or so of being OK, or at least when I was present it was OK.  SNR drops right down which causes the internet to disconnect but the DSL stays lit.  Then it automatically reconnects once the SNR rises again.
I've added this to my ticket, including what you said about it being a possible REIN issue and a link to this thread.