Cable Forum - 50MB - T3 timeouts logged

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- - 50MB - T3 timeouts logged (https://www.cableforum.uk/board/showthread.php?t=33657610)

GMCinema

05-11-2009 11:15

Re: 50MB - T3 timeouts logged

Quote:

Originally Posted by Sephiroth (Post 34904169)

I'll translate that for you!

The forward path equaliser will discriminate between upstream and downstream and in this case would reduce the downstream input power to settle it at around 0dBmv. The equaliser, not being an attenuator, will not affect upstream power.

As with all passive equalizers, even the best ones, there will be some degree of insertion loss. This is why I was hoping they would use an active equalizer.

---------- Post added at 12:15 ---------- Previous post was at 12:14 ----------

I only took me 2 hours! on the phone (mostly on hold) to get a engineer sorted .....

Ignitionnet

05-11-2009 12:39

Re: 50MB - T3 timeouts logged

Yes - insertion loss is approximately 0.5dBmV I'm afraid.

That 2 hour wait is ridiculous.

Peter_

05-11-2009 17:58

Re: 50MB - T3 timeouts logged

Quote:

Originally Posted by GMCinema (Post 34904253)

I only took me 2 hours! on the phone (mostly on hold) to get a engineer sorted .....

This was on 0800 052 0431 you waited for that time on hold.:confused:

GMCinema

05-11-2009 22:10

Re: 50MB - T3 timeouts logged

Quote:

Originally Posted by Moldova (Post 34904474)

This was on 0800 052 0431 you waited for that time on hold.:confused:

Yes on that number, and that number is NOT! a dedicated 50Mb service line. I was reffered to a specialist 50Mb Agent twice ............

Peter_

05-11-2009 22:16

Re: 50MB - T3 timeouts logged

Quote:

Originally Posted by GMCinema (Post 34904726)

Yes on that number, and that number is NOT! a dedicated 50Mb service line. I was reffered to a specialist 50Mb Agent twice ............

It should only come through to us no other department and it is best to call between 0800 and 2000 as it may be redirected to elsewhere as we are UK based and work those hours.

GMCinema

06-11-2009 20:45

Re: 50MB - T3 timeouts logged

Service tech has been, used two 8dB + 4dB = 12dB inline passive forward path equalizers. Here are my levels now: are they acceptable?

Cable Modem Downstream
DS-1 DS-2 DS-3 DS-4
Frequency 299000000 307000000 315000000 323000000
Lock Status
(QAM Lock/FEC Sync/MPEG Lock) Y/Y/Y Y/Y/Y Y/Y/Y Y/Y/Y
Channel Id 17 18 19 20
Modulation 256QAM 256QAM 256QAM 256QAM
Symbol Rate
(Msym/sec) 6.952 6.952 6.952 6.952
Interleave Depth I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17
Power Level
(dBmV) 4.70 4.74 4.88 4.05
RxMER
(dB) 34.63 34.77 34.93 34.93
Correctable
Codewords 31851 11561 6738 10429
Uncorrectable
Codewords 291 283 274 285

Cable Modem Upstream
US-1 US-2 US-3 US-4
Channel Type 1.0 N/A N/A N/A
Channel ID 4 N/A N/A N/A
Frequency
(Hz) 25800000 N/A N/A N/A
Ranging Status Success N/A N/A N/A
Modulation 16QAM N/A N/A N/A
Symbol Rate
(KSym/sec) 2560 N/A N/A N/A
Mini-Slot Size 2 N/A N/A N/A
Power Level
(dBmV) 52.25 N/A N/A N/A
T1 Timeouts 0
T2 Timeouts 0 0 0 0
T3 Timeouts 3 0 0 0
T4 Timeouts 0 0 0 0

Sephiroth

06-11-2009 21:13

Re: 50MB - T3 timeouts logged

Is your service acceptable now?

We can argue about the levels forever! If your service is naff, then there is an ostensible explanation.

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