BMarquis:hio77: impressive.. your on one of the odd dslams that has a Max of 71680 rather than 70000, we have seen odd things happen with them..
Hmm, all of our profiles have a max of 71680, not 70000. They are pushed to dslams from a single source based on templates and should all be identical.
Perhaps the fritz misreports in some cases? Have seen many, many cases int he past of modems mis-reporting figures.
the 54mbps upstream value here shows that too.
always assumed it to be a difference between the configs..
we have seen the two different values, on the same firmwares, from different linecards. maybe the fritz is missreading the packets from the linecard? not sure.. not that it really matters anyway! clearly i was wrong here!
BMarquis:hio77: 11db attenuation, purely from DLM is a first. even if your fritz is miss-reporting (seen the newer firmwares show a 1~3db higher attenuation.
as you can see in your spectrum, distance is clearly a factor for you (note the DL 3 block, tapering off.)
i base my full figures from a chorus employee, along with what we personally have seen in the VDSL section of snap..
by all respects, im hella surprised your on 17a, but congratulations!
My post should be read carefully:
the DLM Choice of 7dB is the ELECTRICAL LENGTH determined by the 5530, not the DSL attenuation. They are different figures (calculated on different frequencies I believe)
e.g, there is a line with:
Electrical Length 6 dB
Attenuation [dB] 10 dB
fully agree, your figures are possibly not the same as the fritz, however i draw conclusions from the likes of sams line, in that the figures generally line up.
as mentioned in that post, the fritz firmware he is on is absolutely known for misreporting of buffering up attenuation values.
this line you speak of however, very interesting example, another line that we would turn around and go WTF about.
BMarquis:hio77:as i pointed out in the thread, it looks like hes on the funny linecards, the broadcom ones, which seem to have completely different profiles to the usal Ikanos..
thats the only way i can possibly explain it..
Nah, the profiles are the same across those line cards (i.e the profiles are stored on the DSLAM and used by both cards), there is only 1 set of profiles.
Being different chipsets, they have different performance, but the profiles are identical.
on the topic of profiles, have there been more added other than in our list? noticed a few people around with odd profiles (such as 8b 8ms/1ms) or is this simply CPE misreporting?
once again, thank you for clearing our assumptions up!
may have even learnt something as to why DLM throws a big finger at us every so often!