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[Ruffles]

Hello all, and thanks in advance for any help.

In summary, I was connected to FTTC some 6 weeks ago; my speed on Speedtest was around 27mb, which dropped in a couple of days to 24mb. Since then it has slowly slipped down to 19mb so today I decided to ditch the BT modem and go straight into my Fritzbox to see if it was any better since several people say it helps. I got it working after 15 minutes or so, but I guess the 3 or 4 disconnects irked the dlm as I'm now getting 16mb on Speedtest.

My main question is will the dlm ever increase the speed? and also, is the Max DSLAM throughput below some some of cap? 

 
                                           Receive Direction   Send Direction
Max. DSLAM throughput   kbit/s      20000                    2000
Min. DSLAM throughput   kbit/s      10000                    1000
Attainable data rate   kbit/s      21940                    4160
Current throughput   kbit/s      17355                     1999

Seamless rate adaptation      off   off
          
Latency      16 ms   0 ms
Impulse Noise Protection      8   0
G.inp      off   off
          
Signal-to-noise ratio   dB   7   12
Bitswap      on   on
Line attenuation   dB   31   12
          
Profile   17a      
G.Vector      off   off
          
Carrier record      A43   A43

[boost]

I don't know very much about FTTC but I am going to hazard a guess at 'no'.

Progressive worsening of speed is usually indicative of a fault and INP getting ramped up (lowering your throughput) or synch speed dropping.

Are you able to pull a HLOG and a QLN off the fritz? Is it a BDCM based modem?

[NewtronStar]

Hello an welcome to Kitz forum Ruffles.

I would say the DLM will increase the speed as long as FTTC modem is kept in the on position for a few weeks, it is hard to know what has decreased your stats from your above info and I dare say you were getting desperate and changed the modem configuration hardware which the DLM see's as another fault on your line.

So it's important from now on to keep that FTTC modem on 24/7 don't try and change back to BT Modem for over a week, yet it would be helpfull if you had any stats software running like DSLstats or HG612_modem_stats to see what happened to your line.

I would say the DLM has capped your line at 20000kbps because there has been or still is a noisy line.

[Ruffles]

Thanks for the replies guys. Now that I'm using the Fritzbox I can at least keep an eye on the stats to see what's going on; the thing that surprises me a bit is SNR being 7db, considering I currently synced at only 17mb compared to the 21-24 that I had for over a month.

'Non remediable' errors are 0.05 per minute for the Fritz and 0.01 per minute for the central exchange, but I've no idea whether that's good or bad.

[burakkucat]

. . . the thing that surprises me a bit is SNR being 7db, . . .

The implication being that at the moment the cabinet DSLAM/MSAN and your modem/router achieved synchronisation there was some other event present (external noise, for example) which was depressing the SNRM. That other event has now ceased and the SNRM has "rebounded" upwards.