I just found a spare filter, so tried using it, into test socket - same deal. At least i have eliminated any fault at my end.
Here are current line stats:
Operational Mode ADSL G.Dmt
Upstream 448 kbps
Downstream 7616 kbps
Noise Margin (Upstream) 22.0 db
Noise Margin (Downstream) 13.5 db
Attenuation (Upstream) 15.0 db
Attenuation (Downstream) 29.5 db
afaik noise margin is a rough indication of distance from exhange. I read that 13.6 db is 1 km, which is almost exactly the distance i am from mine. All my rates appear to be pretty good, so no real reason i can see of a problem that way..? (except downstream noise margin could be better...)
Something i read which helps explain the rates, to myself and anyone else interested:
What is an ideal attentuation and noise margin figure?
The following may help. It is not my research but was posted some weeks ago by someone whom I neglected to identify.
Noise Margin (AKA Signal to Noise Margin or Signal to Noise Ratio)
Relative strength of the DSL signal to Noise ratio. The higher the number the better for this measurement. In some instances interleaving can help raise the noise margin to an acceptable level.
6dB or below is bad and will experience no synch or intermittent synch problems
7dB-10dB is fair but does not leave much room for variances in conditions
11dB-20dB is good with little or no synch problems* (but see note below)
20dB-28dB is excellent
29dB or above is outstanding
* Note that there may be short term bursts of noise that may drop the margin, but due to the sampling time of the management utility in your modem, will not show up in the figures.
Line Attenuation
Measure of how much the signal has degraded between the DSLAM and the modem. This is largely a function of the distance from the exchange. The lower the dB the better for this measurement.
20dB and below is outstanding
20dB-30dB is excellent
30dB-40dB is very good
40dB-50dB is good
50dB-60dB is poor and may experience connectivity issues
60dB or above is bad and will experience connectivity issues
edit - ps thanks Mel, i tried changing wireless channel as well as you suggested, cheers. Same deal though.