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View Full Version : <OMG> 20mb vrigin much slower than 10mb BT


tim2001
12-10-2009, 17:18
I used BT 10mb shared by 4 ppl last year and the speed was ok. I was able to play online game while my friends were downloading. This year, we use virgin 20mb and we expect the speed will be better than last year. I have test the speed by using speedtest.net. The latency is 10ms and max speed is 19.67mb which is close to 20mb with provided router. However i am not able to play any online game while my friends are browsing. After replacing the new router (Belkin N+ Wireless Router (F5D8235-4)), the latency and max speed are same as before. Nothing changes about the speed. So I don’t think is the router causing slower speed. Why Bt 10mb is faster than virgin 20mb, I think we are only running 5-7mb speed but the speed test is 20mb. Why is that?? What can we do to improve the speed?? Is the virgin problem??? Thanks.

Cable Modem Downstream
Downstream Lock : Locked
Downstream Channel Id : 5
Downstream Frequency : 586750000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 6952 Ksym/sec
Downstream Interleave Depth : taps12Increment17
Downstream Receive Power Level : 11.2 dBmV
Downstream SNR : 39.1 dB

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 1
Upstream Frequency : 25800000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 61.0 dBmV
Upstream Mini-Slot Size : 2

Cable Modem Upstream Burst
Req
Init Maint
Per Maint
Short Data
Long Data

(1)
(3)
(4)
(5)
(6)



Modulation Type QPSK QPSK QPSK QPSK QPSK
Differential Encoding Off Off Off Off Off
Preamble Length 64 128 128 100 80
Preamble Value Offset 396 6 6 396 396
FEC Error Correction (T) 0 5 5 3 9
FEC Codeword Information Bytes (k) 16 34 34 78 232
Scrambler Seed 338 338 338 338 338
Maximum Burst Size 0 0 0 35 0
Guard Time Size 8 48 48 25 137
Last Codeword Length Fixed Fixed Fixed Short Short
Scrambler on/off On On On On On

Cable Modem Operation Configuration
Network Access : Allowed
Maximum Downstream Data Rate : 20480000
Maximum Upstream Data Rate : 768000
Maximum Upstream Channel Burst : 1600
Maximum Number of CPEs : 1
Modem Capability : Concatenation Enabled, Fragametation Enabled, PHS Disabled

Peter_
12-10-2009, 20:27
Downstream Receive Power Level : 11.2 dBmV

Upstream transmit Power Level : 61.0 dBmV

You need a engineer as your Downstream is to high and Upstream is to high.

Call Tech Support on 151 from a Virgin phone or 0845 454 1111 from any other phone.

tim2001
12-10-2009, 20:32
i have phone them and they said fine, what can i do for it, can i change it down???

Peter_
12-10-2009, 20:48
i have phone them and they said fine, what can i do for it, can i change it down???
You need to ring them again as those power levels are way out and are definitely not fine, you need an engineer to adjust them.

If not happy call tomorrow after 0800 and you should get a UK agent.

tim2001
12-10-2009, 21:02
You need to ring them again as those power levels are way out and are definitely not fine, you need an engineer to adjust them.

If not happy call tomorrow after 0800 and you should get a UK agent.

will they come to our house or they will do it by phone??? have to pay for engineer come.... thanks
btw if the power levels go down, will we get the faster speed?? what those power levels mean?? thanks

webcrawler2050
12-10-2009, 21:07
will they come to our house or they will do it by phone??? will be paid for engineer come.... thanks

They will need to visit your property to adjust the power levels as they are not right at all. Quick, call should sort it out and they are normally pretty quick in coming aswell

tim2001
12-10-2009, 22:20
They will need to visit your property to adjust the power levels as they are not right at all. Quick, call should sort it out and they are normally pretty quick in coming aswell

do i have to pay for the engineer comes??

webcrawler2050
12-10-2009, 22:32
do i have to pay for the engineer comes??

Simple, answer, unless you cut through / messed around with the exterior cable, no.

broadbandking
12-10-2009, 23:04
do i have to pay for the engineer comes??

The speed issue might clear up with the tech visit
You don't pay for a fault tech
Your issue sounds to me like a upload issue, if the tech visit doesn't sort out your issue make sure your friends or yourself aren't hogging all the upload bandwidth.

tim2001
12-10-2009, 23:11
The speed issue might clear up with the tech visit
You don't pay for a fault tech
Your issue sounds to me like a upload issue, if the tech visit doesn't sort out your issue make sure your friends or yourself aren't hogging all the upload bandwidth.

tthanks ,
btw if i buy a splitter to reduce the power levels, where can i get it?? will it be useful??? thanks

Ignitionnet
12-10-2009, 23:48
tthanks ,
btw if i buy a splitter to reduce the power levels, where can i get it?? will it be useful??? thanks

No it'll just knock you offline. The upstream power level is how much power your modem needs to transmit at to get back to Virgin's equipment. To add a splitter will mean your modem will need to transmit at an even higher level, which it can't do it's already maxed out.

tim2001
13-10-2009, 00:25
No it'll just knock you offline. The upstream power level is how much power your modem needs to transmit at to get back to Virgin's equipment. To add a splitter will mean your modem will need to transmit at an even higher level, which it can't do it's already maxed out.

thanks for the explaination and if the tech fix the power level, the speed will be inrease, right? is there any other issues causing low speed.

webcrawler2050
13-10-2009, 01:08
thanks for the explaination and if the tech fix the power level, the speed will be inrease, right? is there any other issues causing low speed.

If should go back to "normal" however, I would test it whilst the engineer is there - although, it's likely, he will ask you to test it.

broadbandking
13-10-2009, 09:30
Just wondering what programs are you and your friends using to download?

tim2001
13-10-2009, 14:18
Just wondering what programs are you and your friends using to download?

ie built in downloader, sometime bt

broadbandking
13-10-2009, 14:59
Theres a problem using BT and Xbox you need to limit your upload to around 10Kb/s and try that