20Mb Query - Page 2

Peter_ · 22-03-2010, 10:04

Quote:

Originally Posted by dbateman2k5

Phoned back and engineer is booked for tomorrow afternoon. Agent did say that the downstream power level is worrying, but the downstream SNR isn't too much of a worry.

I'll update this post after the engineer has been and hopefully resolved the problem.

The SNR is out of tolerance as well, so they are talking through their backside.

Wild Oscar · 22-03-2010, 12:40

Just for reference .. Isn't it better posting any problems over here ..

.. http://community.virginmedia.com/ ..

rather than using phone support? .. if you can get on-line of course!!

Peter_ · 22-03-2010, 12:42

Quote:

Originally Posted by Wild Oscar

Just for reference .. Isn't it better posting any problems over here ..

.. http://community.virginmedia.com/ ..

rather than using phone support? .. if you can get on-line of course!!

Possibly but you have a bigger membership here.

dbateman2k5 · 22-03-2010, 14:22

Quote:

Originally Posted by Wild Oscar

Just for reference .. Isn't it better posting any problems over here ..

.. http://community.virginmedia.com/ ..

rather than using phone support? .. if you can get on-line of course!!

I can get online, just experiencing speed issues.

I prefer to use Cable Forum, as they have a large user base and I have known and am a member of this forum for a few years.

Will show the engineer the modem config page tomorrow, so that he can see the power levels and SNR level.

dbateman2k5 · 23-03-2010, 17:28

Engineer has been. He replaced my modem with a new one, as the one I had was a 255 not a 256 modem. I now have a 256 modem.

He has improved the downstream SNR, but the power levels are still out, so he has passed the job on to the Network Team to resolve hopefully tomorrow.

Downstream Lock : Locked
Downstream Channel Id : 4
Downstream Frequency : 586750000 Hz
Downstream Modulation : QAM64
Downstream Symbol Rate : 6952 Ksym/sec
Downstream Interleave Depth : taps12Increment17
Downstream Receive Power Level : -9.5 dBmV
Downstream SNR : 26.1 dB

Upstream Lock : Locked
Upstream Channel ID : 3
Upstream Frequency : 25800000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 35.0 dBmV
Upstream Mini-Slot Size : 2

Updated speedtest result...

pip08456 · 23-03-2010, 17:39

Hopefully the Network Team will get their fingers out.

dbateman2k5 · 24-03-2010, 11:31

Network Team called today and said that I need a new thicker cable put in between me and the CAB, which should resolve the SNR/power level issues I've been experiencing.

pip08456 · 24-03-2010, 11:41

Quote:

Originally Posted by dbateman2k5

Network Team called today and said that I need a new thicker cable put in between me and the CAB, which should resolve the SNR/power level issues I've been experiencing.

That is a totally feasible solution. With any luck they'll be quick about it.

dbateman2k5 · 24-03-2010, 12:33

Repull Team just phoned and said it will be in the afternoon of Saturday 10th April, as it will be a two-man job.

dbateman2k5 · 11-04-2010, 18:07

Repull happened at 12pm yesterday. All went without incident.

My cable modem now shows the following....

Downstream Lock : Locked
Downstream Channel Id : 4
Downstream Frequency : 586750000 Hz
Downstream Modulation : QAM64
Downstream Symbol Rate : 6952 Ksym/sec
Downstream Interleave Depth : taps12Increment17
Downstream Receive Power Level : -7.9 dBmV
Downstream SNR : 29.3 dB

Upstream Lock : Locked
Upstream Channel ID : 3
Upstream Frequency : 25800000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 38.0 dBmV
Upstream Mini-Slot Size : 2

Will post updated speed test results in the morning, as we're in the peak time now and it's also the weekend.

Ignitionnet · 11-04-2010, 18:42

Quote:

Originally Posted by pip08456

That is a totally feasible solution. With any luck they'll be quick about it.

No it isn't - look at how low his upstream transmit power is and note that even though they allegedly repulled him, which should lower the attenuation between him and the cabinet meaning the modem needs to transmit at a lower power, it has actually gone up.

---------- Post added at 18:42 ---------- Previous post was at 18:37 ----------

Quote:

Originally Posted by dbateman2k5

Repull happened at 12pm yesterday. All went without incident.

My cable modem now shows the following....

Will post updated speed test results in the morning, as we're in the peak time now and it's also the weekend.

Not at all convinced a repull is the solution. Something is wrong with something a bit further up the chain from you, your levels are quite out of kilter with one another still. If it were just about distance from the cabinet you should have a low downstream receive power accompanied by a high upstream transmit power, as it is as I said above the repull actually increased your upstream transmit power which makes no sense.

If it's working all good of course but it's not ideal.

Fitze73 · 11-04-2010, 18:51

is that spot on ?, im on the 20mb service as well

Peter_ · 11-04-2010, 19:56

Quote:

Originally Posted by Fitze73

is that spot on ?, im on the 20mb service as well

Of course that is spot on, what more do you want.

Matt-08 · 12-04-2010, 00:36

Quote:

Originally Posted by Moldova

Of course that is spot on, what more do you want.

An extra 0.49Mb perhaps?

dbateman2k5 · 12-04-2010, 10:24

Quote:

Originally Posted by Ignitionnet

If it's working all good of course but it's not ideal.

It is working, but speeds are now up and down more.

BTW, I can verify that repull was done, as I watched them do it, as it caused all 3 flats to go offline for about an hour whilst they did the repull.

Between 14Mbps and 19Mbps for download speeds, with upload speeds between 500kbps and 650kbps. Looks like this issue is never going to be fixed correctly

Speedtest.net result...

MyBroadbandSpeed result...