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[adslmax]

Can anyone tell me if my master socket are clean from bridged tap?





[attachment deleted by admin]

[j0hn]

Without seeing the rest of the tones, no.

You need to click the box just below the graph that says "change tone range" and expand it till it shows the entire Hlog.

[adslmax]

Is that better?



[attachment deleted by admin]

[tubaman]

I'd say it's bridge-tap free.
For comparison here's the Hlog from my somewhat less capable line that I know is bridge-tap free.
 

[adslmax]

Thanks but how can it tell if it was bridged tap on the line? Any two graphs compared between Bridged Cap and non bridged cap?

[tubaman]

Bridge-taps will usually show as one or more dips in the Hlog graph.
Your Hlog tails down quite smoothly with increase in frequency as you would expect on a bridge-tap free line.
 

[jelv]

Hlog with bridge tap:



Same line and modem with bridge tap resolved:

[adslmax]

Many thanks that's more understanding now. Just wondering why is bt kept testing the line weekly?
Changed:
-    Last Test Date 13-12-2018
... into:
+    Last Test Date 28-12-2018

[tubaman]

Many thanks that's more understanding now. Just wondering why is bt kept testing the line weekly?
Changed:
-    Last Test Date 13-12-2018
... into:
+    Last Test Date 28-12-2018

Assuming you are looking at the BT dslchecker then I think that's just an automated process going on. Looking at my line it was last checked 24/12/18.
 

[adslmax]

My VDSL has changed this morning after retrain (first time after 97 days stable)

Before:

Downstream   Upstream
Line attenuation (dB):     11.8      0.0
Signal attenuation (dB):   Not available on VDSL2
Attenuation rate (kbps):   83238      28218
Connection speed (kbps):   80000      19999
SNR margin (dB):           6.9      15.1
Power (dBm):               12.5      -0.9
Interleave depth:          8      1
INP:                       49.00      0
G.INP:                     Enabled      Not Enabled

After:

Downstream   Upstream
Line attenuation (dB):     11.6      0.0
Signal attenuation (dB):   Not available on VDSL2
Attenuation rate (kbps):   84395      28273
Connection speed (kbps):   79999      19999
SNR margin (dB):           6.6      15.2
Power (dBm):               12.5      0.0
Interleave depth:          16      1
INP:                       48.00      0
G.INP:                     Enabled      Not Enabled

VDSL Port Details               Upstream                Downstream
Attainable Net Data Rate:           28273 kbps              84395 kbps
Actual Aggregate Tx Power:             0.0 dBm               12.5 dBm
====================================================================================
  VDSL Band Status   U0   U1   U2   U3   U4   D1   D2   D3
  Line Attenuation(dB):   2.6   13.3   20.6   N/A   N/A   6.9   15.9   26.3
Signal Attenuation(dB):   2.6   12.4   19.7   N/A   N/A   9.0   15.8   26.3
        SNR Margin(dB):   14.6   15.8   14.8   N/A   N/A   6.7   6.5   6.5
         TX Power(dBm):   -14.8   -30.1   -0.1   N/A   N/A   8.4   7.6   7.1

Bearer 0
INP:            48.00           0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            0.00            3.98
OR:             0.01            64.22
AgR:            80614.82        20063.54

                        Bearer 1
INP:            4.00            0.00
INPRein:        4.00            0.00
delay:          3               0
PER:            16.06           0.01
OR:             95.62           0.01
AgR:            95.62   0.01

Bitswap:        1/1             519/519

[niemand]

Not a lot to see there at all. One very minor difference, resync could have been caused by a few things.

If you were looking for an investigation into the event there's really not much to see. You remain in the top 10% or so of lines with a full rate sync in fast path.