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[xreyuk]

Hi Guys,

So we've had some more users added to our cabinet (neighbours, and I asked the guy who was working on the cabinet). As expected my upload and download speeds have dropped by a couple of Mb.

However, since this, my error counts have seriously reduced. Here are my stats.

Code: [Select]

# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status:   0
Max:    Upstream rate = 10173 Kbps, Downstream rate = 50244 Kbps
Bearer: 0, Upstream rate = 10680 Kbps, Downstream rate = 44698 Kbps

Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        5.8             5.8
Attn(dB):        22.1            0.0
Pwr(dBm):        12.6            6.3
                        VDSL2 framing
                        Bearer 0
MSGc:           18              26
B:              51              237
M:              1               1
T:              64              46
R:              12              16
S:              0.0370          0.7083
L:              13832           2869
D:              875             1
I:              64              127
N:              64              254
                        Counters
                        Bearer 0
OHF:            113137649               78311
OHFErr:         1828            124
RS:             3193327813              3333271
RSCorr:         5151325         201
RSUnCorr:       175020          0

                        Bearer 0
HEC:            42503           0
OCD:            1773            0
LCD:            1773            0
Total Cells:    1648901793              0
Data Cells:     375161419               0
Drop Cells:     0
Bit Errors:     0               0

ES:             198             118
SES:            3               0
UAS:            23              23
AS:             269073

                        Bearer 0
INP:            3.00            0.00
INPRein:        0.00            0.00
delay:          8               0
PER:            2.37            8.17
OR:             80.73           31.30
AgR:            44779.08        10711.26

Bitswap:        179265/179265           12070/12070



Code: [Select]

# xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status:   0
Max:    Upstream rate = 10170 Kbps, Downstream rate = 50760 Kbps
Bearer: 0, Upstream rate = 10680 Kbps, Downstream rate = 44698 Kbps

Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
Medley Phase (Final) Band Plan
US: (7,32) (871,1205) (1972,2496)
DS: (33,859) (1216,1961) (2793,3403)
                  VDSL Port Details               Upstream                Downstream
Attainable Net Data Rate:           10170 kbps              50760 kbps
Actual Aggregate Tx Power:             6.3 dBm               12.6 dBm
====================================================================================
        VDSL Band Status                U0              U1              U2              U3              U4         D1               D2              D3
  Line Attenuation(dB):  6.8     35.5    53.4     N/A     N/A    16.9    43.6    67.8
Signal Attenuation(dB):  6.8     34.8    51.4     N/A     N/A    25.1    43.3    68.6
                SNR Margin(dB):  5.7     5.8     5.8      N/A     N/A    5.9     5.9     5.9
                 TX Power(dBm):  0.2    -7.4     4.6      N/A     N/A    9.8     7.9     3.6

Do we think these errors are low enough for DLM to start taking off interleaving/INP or not?

Why would adding more lines to the cabinet make me more stable error wise?

[Black Sheep]

No idea. My guess, less bandwidth for errors to be generated ?? 

[burakkucat]

Do we think these errors are low enough for DLM to start taking off interleaving/INP or not?

I don't think it is worth attempting to "second guess" what the Openreach DLM will do. Convince yourself it will do "A" and it will eventually do everything else ("B to Z") other than "A"! 

Why would adding more lines to the cabinet make me more stable error wise?

Perhaps the installer (an Openreach technician from Black Sheep's flock) has tidied-up the jumper wiring, etc, in the PCP and as a consequence has reduced the coupling from a "disturber" into your own circuit? 

[Black Sheep]

Ha ha ........ never thought of that. 

Seriously, if your circuit was 'crimped' (Connected) together in the Cabinet on 3-way crimps, and had an Aluminium E or D-side, then the engineer is expected to replace these crimps for 2-way ones. They don't bite down as harshly as the 3-way ones.
If an engineer is working within the same 'bunch of 10' connections as your own, he could indeed have made your circuit better ?? Thing is, we'll never know ? 

<Disclaimer> Only very recently have new 3-way crimps been introduced into our 'Stores' that perform as well as the 2-way ones.

[xreyuk]

Cheers guys.

I shall keep everything crossed in the hope that DLM decides to be nice to me