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    worth badgering sky for more speed, base on these stats?

    This is a discussion on worth badgering sky for more speed, base on these stats? within the Speed tests and how to get better results forums, part of the Sky Broadband help and support category; Well that's cut the errors down by about 50% but they're still too high. You also got a modest increase ...

    1. #21
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      Re: worth badgering sky for more speed, base on these stats?

      Well that's cut the errors down by about 50% but they're still too high. You also got a modest increase in speed. However, if you can eliminate the noise you should see your speed rise to something like 14500kbps and have a more stable connection - I'm guessing you must be seeing some problems with all those errors.

      It looks like you don't have a master socket. You have a couple of choices:
      • call in BT
      • fit one yourself


      The former will cost you a minimum of 65 unless you are calling them in to fix a voice line fault e.g. hissing/crackling (Hint: intermittent faults often need wiring/sockets upgrading). The latter will cost you ~25 (including a filtered faceplate) but it's a bit of a grey area whether you are allowed to touch your wiring - it's all down to where the demarcation line is considered to be in your house.


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    3. #22
      joe pineapples's Avatar
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      Re: worth badgering sky for more speed, base on these stats?

      You have a very high number of errors on your line which points to a serious noise problem.
      just wondering where on the log, that info is?, and if my line was also generating these errors over time, would it account for the following.........

      i can start a solid download in the morning, say after 9am, which will hover around the 850k/s at least till lumchtime. But over time it gradually drops, by about 50k/s (downloading from the same the same server, or checked with other speed tests) if i reboot the router, it starts downloading again at the original 850k/s, and continues to do so (time span to be filled inl ater - still observing).

      Is this normal, and is there anything i could try doing about it?.

      thanks
      joe

    4. #23
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      Re: worth badgering sky for more speed, base on these stats?

      To see the errors being generated on your line you have to extract the extended stats from the router (e.g. use Mognut's excellent utility - details in the Tech forum).

      Assuming you are ADSL2+ (other ADSL modes exhibit different error levels):

      When you have the extended stats you need to look first at the CRC (cyclic redundancy check) errors. There is no "right" figure but in my opinion, ideally they should be a maximum of something like <0.01% of the SF figure (Sky may feel differently - and it's their network). The nature of ADSL2+ means there will always be some error level - more on Fastpath than Interleaved.

      Next look at LOS (loss of signal). This should really be 0 but if you have a number of CRC then you could expect a (very) small number. If you have more than a few then that's a problem.

      There are also corrected and uncorrected errors to consider but the above should give you a good enough idea of what is going on.

      Errors on the line have an immediate and direct effect on data transmission because either the errors need correction (if it's possible e.g. an Interleaved connection) or the packets need to be resent.

      However, I have read elsewhere that (in ADSL2+) the errors "build up" and this will lead to a suppressed/deteriorating transmission speed. I don't know whether this is correct or what the exact mechanism for this would be.

    5. #24
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      Re: worth badgering sky for more speed, base on these stats?

      thanks Saturday - food for thought.

      if i reboot the router, it starts downloading again at the original 850k/s, and continues to do so (time span to be filled inl ater - still observing).
      since restarting the router about 3:50pm, the download has stayed solid at around the 850k/s mark. Now really starting to think i ought to give sky a ring to get my profile rasied, if todays good results carry on for the next week or so.

    6. #25
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      Re: worth badgering sky for more speed, base on these stats?

      Hi this information is really useful. I have had ann ongoing battle over speed with sky and they are very reluctant to uncap you. I have argued till I am blue in the face and spoken to their tier3 people and said that they have a responsibility to try and achieve maximum speed given the conditions of the line. If you pourchased you broadband from BT they will train your line until they reach max speed. Sky wont because the either can't be bothered or they cap your line to reduce the number of technical calls.

      My stats are as follows:

      /usr/sbin/adslctl: ADSL driver and PHY status
      Status: Showtime Channel: INTR, Upstream rate = 416 Kbps, Downstream rate = 4096 Kbps
      Link Power State: L0
      Mode: G.DMT
      Channel: Interleave
      Trellis: ON
      Line Status: No Defect
      Training Status: Showtime
      Down Up
      SNR (dB): 17.8 14.0
      Attn(dB): 44.0 28.5
      Pwr(dBm): 18.0 0.9
      Max(Kbps): 7584 1216
      Rate (Kbps): 4096 416
      G.dmt framing
      K: 129(0) 14
      R: 16 16
      S: 1 16
      D: 64 8
      ADSL2 framing
      MSGc: 1 1
      B: 129 14
      M: 1 16
      T: 1 1
      R: 16 16
      S: 1.1230 17.0666
      L: 1040 120
      D: 64 8
      Counters
      SF: 17969411 17969409
      SFErr: 19 120
      RS: 1221919958 76369988
      RSCorr: 65732 1878
      RSUnCorr: 332 0

      HEC: 18 100
      OCD: 0 0
      LCD: 0 0
      Total Cells: 2951058017 0
      Data Cells: 60981865 0
      Drop Cells: 1655
      Bit Errors: 0 0

      ES: 223 0
      SES: 218 0
      UAS: 27 0
      Total time = 1 days 12 hours 51 min 55 sec
      SF = 17969411
      CRC = 19
      LOS = 312
      LOF = 0
      ES = 223
      Latest 1 day time = 12 hours 51 min 55 sec
      SF = 2724447
      CRC = 1
      LOS = 23
      LOF = 0
      ES = 19
      Latest 15 minutes time = 6 min 55 sec
      SF = 24407
      CRC = 0
      LOS = 0
      LOF = 0
      ES = 0
      Previous 15 minutes time = 15 min 0 sec
      SF = 52989
      CRC = 0
      LOS = 1
      LOF = 0
      ES = 1
      Previous 1 day time = 24 hours 0 sec
      SF = 5082322
      CRC = 3
      LOS = 157
      LOF = 0
      ES = 93
      15 minutes interval [-30 min to -15 min] time = 15 min 0 sec
      SF = 52931
      CRC = 0
      LOS = 0
      LOF = 0
      ES = 0
      15 minutes interval [-45 min to -30 min] time = 15 min 0 sec
      SF = 52930
      CRC = 0
      LOS = 0
      LOF = 0
      ES = 0
      15 minutes interval [-60 min to -45 min] time = 15 min 0 sec
      SF = 52931
      CRC = 0
      LOS = 0
      LOF = 0
      ES = 0

      And I feel that my line is breasing it in terms of speed because they have capped it so low!

      I am chasing them and feel that they should switch me over to ADSL2+ which by my reckoning should be able to support a line speed of approximately 10mbits at best,

      What say you?

    7. #26
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      Re: worth badgering sky for more speed, base on these stats?

      Your errors are quite low (uncorrected low, errored seconds a little high, CRC low). Overall I'd have thought your line would support an ADSL2+ connection without any trouble and connect at ~8000kbps. I don't think you'd get 10000kbps with that attenuation.

      If they're reluctant to move you from G.DMT then ask them to lift the speed cap and leave it on G.DMT. You'll still get ~8000kbps but possibly a more stable connection than on ADSL2+.

    8. #27
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      Re: worth badgering sky for more speed, base on these stats?

      I have a support call open with Sky at the moment. Up until a couple of days ago I'd connect at around 6Meg and even after 7pm I'd get about 5.8 but it seems I've been capped by Sky as no matter how hard I try I can't get above 5100kbps. I've been forwarded to Tier 3, I'll let you know how I get on.
      I also want to query about connecting via G.DMT and not ADSL2+ I want to know what they say.

      I've replaced my master faceplate with the one recommended by this site from ADSL Nation and that was how I was managing to achive the 6ish meg (Went up from 3.8) At some point I'll be replacing the twisted pair from the master socket to the office with Cat 5 to see what difference that makes as well.


      /usr/sbin/adslctl: ADSL driver and PHY status
      Status: Showtime Channel: INTR, Upstream rate = 768 Kbps, Downstream rate = 5056 Kbps
      Link Power State: L0
      Mode: G.DMT
      Channel: Interleave
      Trellis: ON
      Line Status: No Defect
      Training Status: Showtime
      Down Up
      SNR (dB): 7.3 14.0
      Attn(dB): 47.0 29.5
      Pwr(dBm): 19.8 12.3
      Max(Kbps): 5664 1088
      Rate (Kbps):5056 768

      G.dmt framing
      K: 159(0) 25
      R: 16 16
      S: 1 8
      D: 64 8

      ADSL2 framing
      MSGc: 1 1
      B: 159 25
      M: 1 8
      T: 1 1
      R: 16 16
      S: 1.1000 8.6153
      L: 1280 208
      D: 64 8
      Counters
      SF: 4296774 4296772
      SFErr: 648 0
      RS: 292180640 36522562
      RSCorr: 86140510 122
      RSUnCorr: 24879 0

      HEC: 552 0
      OCD: 203 0
      LCD: 0 0
      Total Cells: 870980030 0
      Data Cells: 246241 0
      Drop Cells: 0
      Bit Errors: 0 0

      ES: 406 0
      SES: 337 0
      UAS: 20 0
      Total time = 20 hours 17 min 52 sec
      SF = 4296774
      CRC = 648
      LOS = 757
      LOF = 0
      ES = 406
      Latest 1 day time = 20 hours 17 min 52 sec
      SF = 4296774
      CRC = 648
      LOS = 757
      LOF = 0
      ES = 406
      Latest 15 minutes time = 2 min 52 sec
      SF = 10175
      CRC = 13
      LOS = 14
      LOF = 0
      ES = 1
      Previous 15 minutes time = 15 min 0 sec
      SF = 52930
      CRC = 12
      LOS = 26
      LOF = 0
      ES = 10
      Previous 1 day time = 0 sec
      SF = 0
      CRC = 0
      LOS = 0
      LOF = 0
      ES = 0
      15 minutes interval [-30 min to -15 min] time = 15 min 0 sec
      SF = 52990
      CRC = 4
      LOS = 6
      LOF = 0
      ES = 8
      15 minutes interval [-45 min to -30 min] time = 15 min 0 sec
      SF = 52930
      CRC = 55
      LOS = 47
      LOF = 0
      ES = 11
      15 minutes interval [-60 min to -45 min] time = 15 min 0 sec
      SF = 52930
      CRC = 3
      LOS = 7
      LOF = 0
      ES = 6

    9. #28
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      Re: worth badgering sky for more speed, base on these stats?

      You have an attenuation of 47db so you will get near enough the same maximum potential speed on G.DMT or ADSL2+ so no real point in badgering Sky to move you.

      What will make a difference is sorting out the noise on your line. You are getting quite a lot of line errors reported by your router - certainly enough to affect your connection. At the moment G.DMT is probably doing you a lot of good.

      Fitting a filtered faceplate is pretty much always a good thing. However, if you then plug your router into it via an extension you're not using it for maximum effect.

    10. #29
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      Re: worth badgering sky for more speed, base on these stats?

      Hi
      I have been reading these pages for a number of week now since i was connected (9th Jan) I find all the info really helpful and have learned alot!

      I was after some help as does anyone think there is a problem with my speeds?

      /usr/sbin/adslctl:
      ADSL driver and PHY status
      Status: Showtime
      Channel: INTR,
      Upstream rate = 416 Kbps,
      Downstream rate = 5248 Kbps
      Link Power State: L0
      Mode: G.DMT
      Channel: Interleave
      Trellis: ON
      Line Status: No Defect
      Training Status: Showtime
      Down Up
      SNR (dB): 6.7 14.0
      Attn(dB): 46.0 29.0
      Pwr(dBm): 19.7 0.8
      Max(Kbps): 5824 1152
      Rate (Kbps): 5248 416
      G.dmt framing
      K: 165(0) 14
      R: 16 16
      S: 1 16
      D: 64 8
      ADSL2 framing
      MSGc: 1 1
      B: 165 14
      M: 1 16
      T: 1 1
      R: 16 16
      S: 1.0963 17.0666
      L: 1328 120
      D: 64 8
      Counters
      SF: 5645970 5645968
      SFErr: 499271 674
      RS: 383926022 23995364
      RSCorr: 314403431 1590
      RSUnCorr: 4621786 0

      HEC: 469702 658
      OCD: 1985 250
      LCD: 4 120
      Total Cells: 1182363869 0
      Data Cells: 21180156 0
      Drop Cells: 0
      Bit Errors: 0 0

      ES: 18039 0
      SES: 10715 0
      UAS: 21 0
      Total time = 1 days 2 hours 40 min 9 sec
      SF = 5645970
      CRC = 499271
      LOS = 1171
      LOF = 0
      ES = 18039
      Latest 1 day time = 2 hours 40 min 9 sec
      SF = 565238
      CRC = 311
      LOS = 188
      LOF = 0
      ES = 249
      Latest 15 minutes time = 10 min 9 sec
      SF = 35875
      CRC = 32
      LOS = 19
      LOF = 0
      ES = 25
      Previous 15 minutes time = 15 min 0 sec
      SF = 52930
      CRC = 26
      LOS = 16
      LOF = 0
      ES = 30
      Previous 1 day time = 24 hours 0 sec
      SF = 5080732
      CRC = 498960
      LOS = 983
      LOF = 0
      ES = 17790
      15 minutes interval [-30 min to -15 min] time = 15 min 0 sec
      SF = 52931
      CRC = 15
      LOS = 10
      LOF = 0
      ES = 15
      15 minutes interval [-45 min to -30 min] time = 15 min 0 sec
      SF = 52930
      CRC = 29
      LOS = 23
      LOF = 0
      ES = 25
      15 minutes interval [-60 min to -45 min] time = 15 min 0 sec
      SF = 52989
      CRC = 20
      LOS = 16
      LOF = 0
      ES = 21

      Hope this helps....

    11. #30
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      Re: worth badgering sky for more speed, base on these stats?

      Sorry forgot to add

      I am on mid package and am 1.72kms from exchange, connected via cable to upstairs ext socket...

      Thanks in advance....

      Phil...........

     

     
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