Hi homer79,
Just this minute had FTTC installed. His tool said my line was 1090M long. I'm currently syncing around 34Mbs down and 10 up. I'm very happy indeed. I was only predicted 8Mbs. The speed tests aren't working for me at the moment.
I see from your later post that your download speeds dropped to 28 Mb after a few days.
What sort of speeds are you now achieving after a few months of use, have you experienced connection speed/stability issues, & have you unlocked the modem in order to obtain detailed connection stats?
The reason I am asking is because I am supposedly a very similar distance from the cabinet as you are.
On installation, the engineer told that my sync speed was 35 Mb.
He didn't mention the line's length though, & regrettably, I didn't ask!
This was confirmed by me achieving steady 32 Mb - 33 Mb actual download speeds for the first month.
"Something" was done by BT a month in, which left me with no phone or broadband at all for 4 days.
Since they were reconnected, I have endured many disconnections, really low speeds (7 Mb on occasions), many engineer visits, even though my ISP & BT stated my connection, (when remotely tested) was O.K. (LTOK) & that I might have to pay BT's extortionate charges if no faults could be found etc. etc. etc..
Each time an engineer visited,
THE "fault" was supposedly found & fixed, but each engineer REFUSED to retest the line for any further faults.
The latest engineer (in mid-November) replaced some overhead external cabling, & stability appeared to have been regained, although speeds were still low.
He told me that before he replaced the cabling, my line length was being reported as 1000m, & after he replaced it, it was being reported as 900m (to the pole across the road from my house).
He wouldn't tell me what length was being reported at my master socket.
Download speeds crept up to 27 Mb for a few days, but many, many FEC, CRC, HEC type connection errors were seen.
Eventually, the connection gave up & re-synced at a lower speed again, added interleaving, & resulted in downloads now in the the low 20's Mb.
The connection errors have reduced, but I am still some 10 Mb to 12 Mb short of my initial speeds.
When others have been switched over from our original 8c profile to the new 17a profile, they have ALL seen a download speed improvement, with some seeing a slight reduction in upload speeds.
I can't say that I saw any real improvement at all.
If anything, I would say my error counts have increased.
I didn't really log them prior to the switch, as they didn't look too bad, but I now monitor them regularly.
How did the profile switch affect your connection's speeds / stability?
FYI, these are my current basic connection stats. You will see that my connection's attenuation is that high, that I don't get anything at all from the higher 17a frequency U2 & D3 bands.
| Text |
1
23
45
67
89
1011
1213
1415
1617
1819
2021
2223
2425
2627
2829
3031
3233
3435
3637
3839
4041
4243
4445
4647
4849
5051
5253
5455
5657
5859
6061
6263
6465
6667
6869
7071
7273
7475
7677
7879
8081
8283
8485
86 | # xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY statusStatus: Showtime
Retrain Reason: 0Max: Upstream rate = 6015 Kbps, Downstream rate = 31856 Kbps
Path: 0, Upstream rate = 5952 Kbps, Downstream rate = 27131 Kbps
Discovery Phase (Initial) Band PlanUS: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3939) Medley Phase (Final) Band Plan
US: (0,95) (868,1207) DS: (32,859) (1216,1963)
VDSL Port Details Upstream DownstreamAttainable Net Data Rate: 6015 kbps 31856 kbps
Actual Aggregate Tx Power: 6.3 dBm 12.3 dBm============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3 Line Attenuation(dB): 8.3 52.8 64.1 N/A 21.6 63.0 0.1
Signal Attenuation(dB): 14.8 52.0 N/A N/A 21.6 63.0 N/A SNR Margin(dB): 6.1 6.3 N/A N/A 3.8 3.7 N/A
TX Power(dBm): -4.2 5.8 N/A N/A 10.9 6.6 N/A #
Link Power State: L0
Mode: VDSL2 Annex BVDSL2 Profile: Profile 17a
TPS-TC: PTM ModeTrellis: U:ON /D:ON
Line Status: No DefectTraining Status: Showtime
Down UpSNR (dB): 3.7 6.3
Attn(dB): 0.0 0.0Pwr(dBm): 12.3 6.3
VDSL2 framing Path 0
B: 31 175M: 1 1
T: 64 40R: 12 12
S: 0.0375 0.9382L: 9381 1603
D: 1739 1I: 44 94
N: 44 188 Counters
Path 0OHF: 44978710 1243232
OHFErr: 547 114RS: 92052483 1908977
RSCorr: 7547766 2133RSUnCorr: 15538 0
Path 0
HEC: 2489 0OCD: 0 0
LCD: 0 0Total Cells: 4181551421 0
Data Cells: 23128249 0Drop Cells: 0
Bit Errors: 0 0
ES: 71 105SES: 0 0
UAS: 21 21AS: 162657
Path 0
INP: 8.50 0.00PER: 3.60 9.38
delay: 16.00 0.00OR: 53.30 27.28
Bitswap: 75486 2823
Since Link time = 1 days 21 hours 10 min 55 secFEC: 7547766 2133
CRC: 547 114ES: 71 105
SES: 0 0UAS: 0 0
LOS: 0 0LOF: 0 0
# |
Graphs for the above stats
Your stats/details MAY give me something to work with as a comparison to urge my ISP / BT into some action to get this resolved once & for all (unless you too have suffered such a large & ongoing speed / stability reduction).
BTW, my pre-install estimated speed was 14.6 Mb (so POSSIBLY a little closer to the cabinet than you are in reality), & since the switch to 17a it has become 24 Mb for my phone No.
Finally, for curiosity, who is your ISP? Mine is Plusnet.
Paul.
EDIT:-
I have sent your brother my contact details in a PM if you fancied sending me any PuTTy or Plink logs for your own connection to graph / examine / compare stats against mine etc.
Edited by deleted (Sat 17-Dec-11 09:47:18)