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[Hokum]

My Fritz 7530 is disconnecting 4+ times a day, plus i'm getting max 12Mbps up and 1Mbps down. Cabinet is 800M away, driving.
From the attenuation it works it out at 1365M so either my line goes around the houses or some other problems,

Negotiated Connection Properties
Receive Direction   Send Direction
Max. DSLAM throughput   kbit/s   40000   10000
Min. DSLAM throughput   kbit/s   128   128
Attainable throughput   kbit/s   11223   1009
Current throughput   kbit/s   10668   1009
Seamless rate adaptation      off   off
          
Latency      fast   fast
Impulse Noise Protection (INP)      50   0
G.INP      on   off
          
Signal-to-noise ratio   dB   6   6
Bitswap      on   off
Line attenuation   dB   33   14
approximate line length   m   1364   
          
Profile   17a      
G.Vector      off   off
          
Carrier record      A43   A43

I notice I my line spectrum seems to be odd also.
Anyone seen this kind of thing before?

[j0hn]

From the attenuation it works it out at 1365M

Line attenuation   dB   33

33dB attenuation will be considerably more than 1364m. Out of interest where did you get that figure from?

Is what your line is achieving in line with what the BT Broadband Availability Checker estimates?

[Hokum]

Line estimates are 14-23Mbps, the distance was what the router was telling me.

Also why for a 17a profile do I have no signal above 768Khz? Since I changed to my venerable HG612, I'm not getting disconnected but the signal is still poor.

[Hokum]

Here  is the output from the HG612 since I connected it. Zen have sent me a readout of my disconnections from something called Yukon?

It is interesting you can see where I put the HG612 on before Christmas 16th-20th, then again on the 7th-10th Jan cause it always shows a disconnection at 03:45 is this a feature of the HG612?

But you can see the number of disconnections I was getting with the Fritz Box13th, 15th December and 3rd-6th January.

[burakkucat]

I have downloaded a copy of the 2.txt file and used it to produce the four "snapshot" plots. A montage of the four plots is attached, below.

All I can say is that is one very sick VDSL2 circuit . . . 

[mrk26]

I think I see something similar in the past, other guy have similar limited service , turned out that one cable from pair wasn't connected properly in cabinet on the street? I may be wrong...

[burakkucat]

I think I see something similar in the past, other guy have similar limited service , turned out that one cable from pair wasn't connected properly in cabinet on the street?

A "one-leg dis". Yes, that could possibly explain what those four snapshot plots are showing.

Edited to add: The obvious questions are --

• Do you have a telephone connected to the line?
• If "yes" to the above, does it work?

[Hokum]

Thanks for the replies, yes I have a phone on the connection, it does work but the audio quality is not very good.

[Alex Atkin UK]

Thanks for the replies, yes I have a phone on the connection, it does work but the audio quality is not very good.

If audio quality is not up to par and you're sure its not from your internal wiring, then I'd get that reported first.  Its taken far more seriously than "my broadband isn't as fast as I think it should be".

[Hokum]

Out of interest, how many wires are in a "line" I remember the engineer saying that they had the split the cable between my house and the one next door.

[burakkucat]

A "line" consists of two wires and those two wires make up one "pair".

[mrk26]

When bell wire was included originally, could be 2 pairs to each property where two of yours was given to next door neighbours?

[Hokum]

When bell wire was included originally, could be 2 pairs to each property where two of yours was given to next door neighbours?

I think that could be the case, the house dates from the 30's. There is only one wire running runnibg from the pole and it goes to one wall point then splits to the two houses.

[burakkucat]

When bell wire was included originally, could be 2 pairs to each property where two of yours was given to next door neighbours?

I think that could be the case, the house dates from the 30's. There is only one wire running runnibg from the pole and it goes to one wall point then splits to the two houses.

I suspect you are both thinking of the concept of the (long retired off) shared-service. 

That operated by delivering the same pair to two separate properties and establishing an earth connection at each address. At the "A" address, the bell was connected between the first wire of the pair and earth. At the "B" address, the bell was connected between the second wire of the pair and earth. Each telephone was equipped with a "Call Exchange" button. A push of that button would momentary put an earth onto the relevant wire of the pair, thus signalling to the exchange which subscriber was making the call. That is just a brief idea of the workings . . . (Full details and the circuit diagrams for both the "A" and "B" subscriber stations can be seen in the usual places. Hint: "Herbert and Proctor" or "Atkinson".)

However that history is not relevant to this current poorly performing circuit. As Alex has already suggested, a telephony fault should be reported to the service provider. Once the circuit is operating correctly for telephone calls, it is quite possible that the broadband Internet access will also be significantly improved.

[Hokum]

I've  had an engineer around now... and he said there was an issue with the line, and swapped me onto a spare....

I now have 9Mbps Down... FML!

Also the Engineer was puzzled why all the other houses have one line each from the pole, but my house and next door only have one between us.

xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason:      2
Last initialization procedure status:       0
Max:        Upstream rate = 1177 Kbps, Downstream rate = 8816 Kbps
Bearer:    0, Upstream rate = 1177 Kbps, Downstream rate = 9412 Kbps
Bearer:    1, Upstream rate = 0 Kbps, Downstream rate = 0 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): 5.4                          6.3
Attn(dB): 30.8                        0.0
Pwr(dBm):              9.6                          10.5
                                                VDSL2 framing
                                                Bearer 0
MSGc:                     -6                             26
B:                             227                          31
M:                            1                              1
T:                             0                              54
R:                             12                            0
S:                             0.7705                     0.8505
L:                             2492                        301
D:                             4                              1
I:                              240                          32
N:                            240                          32
Q:                            4                              0
V:                             0                              0
RxQueue:                16                            0
TxQueue:                 8                              0
G.INP Framing:                       18                            0
G.INP lookback:                       8                              0
RRC bits:                  0                              24
                                                Bearer 1
MSGc:                     90                            -6
B:                             0                              0
M:                            2                              0
T:                             2                              0
R:                             16                            0
S:                             10.6667                   0.0000
L:                             24                            0
D:                             1                              0
I:                              32                            0
N:                            32                            0
Q:                            0                              0
V:                             0                              0
RxQueue:                0                              0
TxQueue:                 0                              0
G.INP Framing:                       0                              0
G.INP lookback:                       0                              0
RRC bits:                  0                              0
                                                Counters
                                                Bearer 0
OHF:                        0                              268786
OHFErr:                   0                              0
RS:                           102720820                              3221422
RSCorr:                    225                          0
RSUnCorr:               0                              0
                                                Bearer 1
OHF:                        1236669                  0
OHFErr:                   0                              0
RS:                           7419642                  0
RSCorr:                    0                              0
RSUnCorr:               0                              0

                                                Retransmit Counters
rtx_tx:                      5515782                  0
rtx_c:                       2757                        0
rtx_uc:                     90394                      0

                                                G.INP Counters
LEFTRS:                   33                            0
minEFTR: 9405                        0
errFreeBits:             69276726                                0

                                                Bearer 0
HEC:                        0                              0
OCD:                        0                              0
LCD:                         0                              0
Total Cells:              359526563                              0
Data Cells:               27599062                                0
Drop Cells:              0
Bit Errors:                0                              0

                                                Bearer 1
HEC:                        0                              0
OCD:                        0                              0
LCD:                         0                              0
Total Cells:              0                              0
Data Cells:               0                              0
Drop Cells:              0
Bit Errors:                0                              0

ES:                           30                            2
SES:                         26                            0
UAS:                        39897                      39872
AS:                           19864

                                                Bearer 0
INP:                         46.00                       0.00
INPRein:  0.00                         0.00
delay:                      0                              0
PER:                         0.00                         11.52
OR:                          0.01                         22.20
AgR:                        9432.75   1199.31

                                                Bearer 1
INP:                         2.50                         0.00
INPRein:  2.50                         0.00
delay:                      0                              0
PER:                         16.06                       0.01
OR:                          47.81                       0.01
AgR:                        47.81       0.01

Bitswap:  9233/9233                              0/0