ADSL2+ slow upload speeds - low sync rate?
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- Re: ADSL2+ slow upload speeds - low sync rate?
ADSL2+ slow upload speeds - low sync rate?
17-12-2015 4:31 PM
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I'm struggling with slow upload speeds on my ADSL2+ connection. Tests with a variety of online speed test sites show typical upload speeds of ~0.3 Mbps.
My router (Billion 7800DXL) is showing an achievable upstream sync rate of 1092 Kbps but an actual sync rate of just 445 Kbps.
I assumed this was limited by the default upstream cap, but I contacted PlusNet support via chat who confirmed my upstream connection is "uncapped".
The router is connected to a high quality splitter, which is connected to the BT master socket. There are no phones or other devices connected at all. Nice and simple.
Does anyone know why my router is only syncing at less than half the achievable upstream rate?
Upstream link statistics:
Mode: ADSL2+
Line Coding (Trellis) On
SNR Margin (dB) 31.5
Attenuation (dB) 16.8
Output Power (dBm) 12.6
Attainable Rate (Kbps) 1092
Rate (Kbps) 445
Downstream link statistics:
Mode: ADSL2+
Line Coding (Trellis) On
SNR Margin (dB) 6.1
Attenuation (dB) 27.0
Output Power (dBm) 0.0
Attainable Rate (Kbps) 16740
Re: ADSL2+ slow upload speeds - low sync rate?
17-12-2015 5:01 PM
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Re: ADSL2+ slow upload speeds - low sync rate?
17-12-2015 5:06 PM
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Superusers are not staff, but they do have a direct line of communication into the business in order to raise issues, concerns and feedback from the community.
Re: ADSL2+ slow upload speeds - low sync rate?
17-12-2015 5:16 PM
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Re: ADSL2+ slow upload speeds - low sync rate?
17-12-2015 5:20 PM
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I've checked the product on the line and it's definitely uncapped with BT Wholesale and we do no upstream capping on ADSL products at our side, might be best to speak to someone in our technical support team though if you feel it's too low
Re: ADSL2+ slow upload speeds - low sync rate?
17-12-2015 5:23 PM
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Is there any way of opening a case online? There is currently a 45 minute wait time for technical support.
Re: ADSL2+ slow upload speeds - low sync rate?
17-12-2015 5:25 PM
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Re: ADSL2+ slow upload speeds - low sync rate?
17-12-2015 5:31 PM
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http://www.plus.net/support/broadband/speed_guide/broadband_speeds.shtml
Type Download speed Upload speed
ADSL2+ (Residential products) up to 17Mb/s up to 1.3Mb/s**
ADSL2+ circuits are provisioned at 448Kb/s as standard. This can be uncapped on request to provide a maximum of up to 1.3Mb/s.
My upstream is syncing at 445 Kb/s which sounds very similar to the cap reported above.
Re: ADSL2+ slow upload speeds - low sync rate?
17-12-2015 5:49 PM
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Superusers are not staff, but they do have a direct line of communication into the business in order to raise issues, concerns and feedback from the community.
Re: ADSL2+ slow upload speeds - low sync rate?
17-12-2015 5:51 PM
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Thanks for noticing that though. Ill get that passed on so it can be updated.
Re: ADSL2+ slow upload speeds - low sync rate?
17-12-2015 5:52 PM
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The physical line is definitely set as uncapped though
Re: ADSL2+ slow upload speeds - low sync rate?
17-12-2015 5:56 PM
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I suppose Plusnet's records and BTWholesale's settings are configured for uncapped upstream, but that's not how the line is actually operating. Possibly your port on the line card at the exchange is not working properly, Plusnet could try resetting it. Or they could try capping the upstream, then uncapping it, each step might take a day or so to complete.
Re: ADSL2+ slow upload speeds - low sync rate?
18-12-2015 8:52 AM
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The order to remove that cap is in place and will be gone by Monday for you
Re: ADSL2+ slow upload speeds - low sync rate?
18-12-2015 11:04 AM
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Re: ADSL2+ slow upload speeds - low sync rate?
18-12-2015 11:57 AM
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PLUSNET is crap
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- Re: ADSL2+ slow upload speeds - low sync rate?