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I have the el cheapo M broadband connection (now called 'L', I think) which has been running close to full bore since I got it. Over the last few says it seems to have gone sub-ADSL ( read 'catatonic') on me at d/l 369 kilobits/sec and u/l 335 kbs! I am in the BS6 area.
Anybody else so afflicted?
My modem is a SB4100 with an S/N of 36dB and a Power Level of 10 dBmV. From another post, the latter seems a bit low. Is it?
Suddenly fearful of looking a prat, I removed all QoS from my router (applied to improve VoIP) and re-ran Numion.com... The figures are weirder with DL at 315 kbs and UL at 399 kbs! So, not that.
True QOS shouldnt present a problem because it is dynamic and will only prioritise one service if it is actually in use... How your router implements it on a tiny little chip is another issue...
Always best to try directly to the cable modem and also with another PC to eliminate network issues or pc probs. (You'd be surprised how many very techie people - myself included have assumed that the PC is fine because we know what we are doing, but then found that the PC is actually the issue )
Otherwise - are you sure you aren't going over your limit and being throttled? It sounds a bit too fast for a throttled connection to me....
Otherwise I think you will have a lot of long and unhelpful calls to the customer service
My error - it WAS QoS: I had put the upload figure in the download box
I was surprised at how violently the download speeds changed. My 10Mbs connection swung from 2.5 to 8.5, median about 4-5Mbs. This is in a suburban setting at 11 - 12:30 in the afternoon...