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Aspiring Contributor
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Message 1 of 14

BBC iPlayer buffering with BT Smart Hub and BT powerline adapters

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Hi there, wonder if you can help.  We access BBC iPlayer via our YouView box and it buffers about once per two hours of viewing, which requires us to turn everything off and back on again to fix it.  Most annoying when the drama has got to the exciting bit!  We have superfast fibre broadband and only have the issue with iPlayer.  We use powerline adapters as the hub is on one side of the living room and the TV is on the other, and we have so far preferred not to take up all the carpet to run an Ethernet cable underneath.  We got the adapters when we were on an earlier Home Hub.  Family debate is over whether it is the broadband (we live quite far from the exchange in a village), the BBC service, the YouView box or the adapters, but we all agree something isn't quite right.  Please can someone resolve this for us?  Many thanks in anticipation, Nick

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Distinguished Sage
Distinguished Sage
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Message 2 of 14

Re: BBC iPlayer buffering with BT Smart Hub and BT powerline adapters

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The distance from the exchange is immaterial with Superfast fibre, it is the distance from the cabinet that matters.

Can you post the stats from you hub please Advanced settings > Technical Log > Information.

To verify if it is the powerline adaptors causingthe problem, you could always just lay a temporary Ethernet cable across the floor and see if it helps.

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Aspiring Contributor
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Message 3 of 14

Re: BBC iPlayer buffering with BT Smart Hub and BT powerline adapters

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Good idea.  How do I find these statistics to post, please?

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Distinguished Sage
Distinguished Sage
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Message 4 of 14

Re: BBC iPlayer buffering with BT Smart Hub and BT powerline adapters

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Click here and then Advanced settings > Technical log  > Information

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Aspiring Contributor
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Message 5 of 14

Re: BBC iPlayer buffering with BT Smart Hub and BT powerline adapters

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Does this help?

Data rate:9.995 Mbps / 43.999 Mbps
Maximum data rate:14.572 Mbps / 51.653 Mbps
Noise margin:9.1 / 8.7
Line attenuation:22.7 / 17.7
Signal attenuation:22.2 / 16.7

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Distinguished Sage
Distinguished Sage
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Message 6 of 14

Re: BBC iPlayer buffering with BT Smart Hub and BT powerline adapters

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Those stats would suggest your line has been banded by DLM due to instability. Is there any noise when you do a quiet line test by dialling 17070?
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Aspiring Contributor
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Message 7 of 14

Re: BBC iPlayer buffering with BT Smart Hub and BT powerline adapters

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Yes, there is a little background fuzziness.  What is 'DLM'?

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Distinguished Sage
Distinguished Sage
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Message 8 of 14

Re: BBC iPlayer buffering with BT Smart Hub and BT powerline adapters

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Dynamic line management. It is an automatic line monitoring mechanism which tries to stabilise a problematic line by reducing the speed. If there is still noise on the line when you repeat the quiet line test from the test socket behind the removable faceplate of the master, report the fault as a noisy phone fault, don't mention broadband.

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Recognised Expert
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Message 9 of 14

Re: BBC iPlayer buffering with BT Smart Hub and BT powerline adapters

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Whilst your line may be banded your actually connection speed is more than adequate for buffer-free viewing.

PLAs are the most likely cause which can only be ruled out by a direct ethernet cable connection to the router or connecting a laptop to the PLA by the Youview box & running a speed test over the PLA circuit.

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Distinguished Sage
Distinguished Sage
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Message 10 of 14

Re: BBC iPlayer buffering with BT Smart Hub and BT powerline adapters

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It wasn't  the banding and speed per se that I regard as the cause of the problem, but rather the cause of the banding in the first place. I.e an unstable line.

 

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