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'That VDSL Cat'
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  # 1437432 29-Nov-2015 22:03
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Jase2985: transmit/receive power are both still the same at 14.5/-10.1dB


Interesting, Although logical as per DLM profiles.

Theres my shoot in the dark at the potential cause though!




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  # 1437443 29-Nov-2015 22:46
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im not worried or anything its just interesting to see what its doing along the process

 
 
 
 


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  # 1437445 29-Nov-2015 22:55
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Jase2985: im not worried or anything its just interesting to see what its doing along the process


Interested is exactly where i stand too.. few more ideas up in mind based off a few whitepapers though..




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  # 1437472 30-Nov-2015 01:07
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I'm finally joining the 998 club! I was just writing my forum post and hit post reply then my line resynced again.
So What happened was I got 1 resync at 00:40 and it was an higher downstream bump and kept my DLM-1 profile, went from 60Mbps to 70Mbps.



Now It just did a resync again and I'm getting 70/25, which is great! more upstream woohoo! but I'm back down to a DLM-2/4 profile, I'm guessing that'll fix itself in the upcoming week/month, too bad Ikanos line card but oh well.


Curiously I have nothing in the US0 Band which is interesting... I wonder what happened there.


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  # 1437473 30-Nov-2015 01:10
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998 17a doesnt have US0 enabled, its the trade off somewhat.

US0 is realistically only a few mbit, so makes sense to cutback on it there.


Give it a week, you will be back down to DLM-1




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  # 1437505 30-Nov-2015 08:24
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The speed increases but the ping also increases by 10-15ms! 





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  # 1437511 30-Nov-2015 08:34
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hio77: 998 17a doesnt have US0 enabled, its the trade off somewhat.

US0 is realistically only a few mbit, so makes sense to cutback on it there.


interesting you say that but then i have US0 active on my line you can see it here:
Click to see full size

Its using tones 6-32 and this is the bit loading for the tones
Tone   Bit loading  
   11           1
   12           1
   13           1
   14           2
   15           2
   16           1
   17           2
   18           1
   19           2
   20           1

nakedmolerat: The speed increases but the ping also increases by 10-15ms! 

happened to pretty much everyone as you now start out on DLM-2 or DLM-4 and have to work your way back to DLM-1. where as on 997 you generally started out on DLM-1 and if you had a bad line it would drop you back to DLM-2 etc.

 
 
 
 


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  # 1437708 30-Nov-2015 10:53
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Our current 8B profile upgraded overnight. (I usually have 17A but that was lost through a port refresh so I'll be interested to see if I can eventually get back to that profile.)

Last night's 997 8B snapshot was...

Attainable: 48015000/16735000
Actual: 48000000/10356000
SNR: Near 11, Far 22
Attenuation: Near 9, Far 0
Ping 6ms

This morning with a 17ms Ping....

 

  ---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
   Running Mode            :       8B       State                : SHOWTIME
   DS Actual Rate          : 70460000 bps   US Actual Rate       : 13772000 bps
   DS Attainable Rate      : 70500800 bps   US Attainable Rate   : 13779000 bps
   DS Path Mode            :        Fast    US Path Mode         :        Fast 
   DS Interleave Depth     :        0       US Interleave Depth  :        0 
   NE Current Attenuation  :       11 dB    Cur SNR Margin       :        9  dB
   DS actual PSD           :   -11.-6 dB    US actual PSD        :    17. 2  dB
   NE CRC Count            :        0       FE CRC Count         :        0
   NE ES Count             :        0       FE  ES Count         :        0
   Xdsl Reset Times        :        0       Xdsl Link  Times     :        3
   ITU Version[0]          : b5004946       ITU Version[1]       : 544e0000
   VDSL Firmware Version   : 05-04-08-00-00-06 
   Power Management Mode   : DSL_G997_PMS_L0 
   Test Mode               : DISABLE 
  -------------------------------- ATU-C Info ---------------------------------
   Far Current Attenuation :        0 dB    Far SNR Margin       :        8  dB
   CO ITU Version[0]       : b5004244       CO ITU Version[1]    : 434da3f5
   DSLAM CHIPSET VENDOR    : < BDCM >

 

Curious to see what happens next.

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  # 1437730 30-Nov-2015 11:24
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Sigh... DLM seems to be at work :(

Since our initial speed upgrade, we've now dropped down by around 10Mbps. It is now sitting at 57446 Kbps. Ping is a solid 20ms (on 997 we were getting ~7ms)

Current stats:
Line standard VDSL2
Downstream line rate (kbit/s) 57446
Upstream line rate (kbit/s) 13490
Downstream SNR (dB)  9.4
Upstream SNR (dB)  8.9
Downstream line attenuation (dB) 13.4
Upstream line attenuation (dB) 4.9
Downstream output power (dBmV) 18.5
Upstream output power (dBmV) -3.4
Downstream CRC 15
Upstream CRC 0
Downstream FEC 5562
Upstream FEC 573

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  # 1437742 30-Nov-2015 11:33
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Jase2985: 
interesting you say that but then i have US0 active on my line you can see it here:


Seems i missed that, it is interesting indeed.

datahawk: Our current 8B profile upgraded overnight. (I usually have 17A but that was lost through a port refresh so I'll be interested to see if I can eventually get back to that profile.)


70/13 on 8b is pretty impressive.

broadcom linecard so you would be open to the upto 100/50 once 17a comes back.




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  # 1437753 30-Nov-2015 11:57
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shermanp: Sigh... DLM seems to be at work :(

Since our initial speed upgrade, we've now dropped down by around 10Mbps. It is now sitting at 57446 Kbps. Ping is a solid 20ms (on 997 we were getting ~7ms)


Mine is worst - dropped from 66 to 50! Not happy at all. I assume yours from 67 to 57?





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  # 1437756 30-Nov-2015 12:03
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nakedmolerat:
shermanp: Sigh... DLM seems to be at work :(

Since our initial speed upgrade, we've now dropped down by around 10Mbps. It is now sitting at 57446 Kbps. Ping is a solid 20ms (on 997 we were getting ~7ms)


Mine is worst - dropped from 66 to 50! Not happy at all. I assume yours from 67 to 57?


Original sync speed on 998 was 68,264Kbps, so close enough to 10Mbps

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  # 1437758 30-Nov-2015 12:06
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chevrolux: Logged in to that Pharmacy with the flash connection... got quite a shock when I saw the rates....



Haven't been on site to actual test this but pretty dam impressive!! We were going to order UFB for this customer but being in a big MDU the hassle is just not worth it considering these rates.


Managed to get on site to actually test this connection out. I am extremely impressed!!!!!


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  # 1437775 30-Nov-2015 12:41
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hio77:

70/13 on 8b is pretty impressive.

broadcom linecard so you would be open to the upto 100/50 once 17a comes back.


Yes, I'm quite pleased with that result considering we are attached to a rural cabinet and that I estimate at least 350 - 380 meters of copper to the modem. Some advantages being good condition heavy duty rural copper and a lifestyle block area so I'm guessing low cross talk issues.

Looking forward to the prospect of 17A on 998 - Time will tell.

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  # 1437909 30-Nov-2015 15:31
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datahawk:
hio77:

70/13 on 8b is pretty impressive.

broadcom linecard so you would be open to the upto 100/50 once 17a comes back.


Yes, I'm quite pleased with that result considering we are attached to a rural cabinet and that I estimate at least 350 - 380 meters of copper to the modem. Some advantages being good condition heavy duty rural copper and a lifestyle block area so I'm guessing low cross talk issues.

Looking forward to the prospect of 17A on 998 - Time will tell.


At that distance, so long as your wiring is good, you should go to 17a at some point. 

Ping dropped back to 4ms (round trip), so I'm pretty happy with my 998 17a profile.

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