My broadband looses its synchronization

nrg_polini · 02-04-2006, 17:43

Hello

For a week now, every day (2-3 times/day) my broadband looses its synchronization and i have to reboot the modem in order to get connected. My problem is that other ppl are on the network and they have to wait until i get home and reboot the modem as it is in my room.

I called NTL broadband support. They told me that i have to call them when my connection is not working, that was not a big problem as a couple of hours later my modem failed to synchronize again, so i called them. I said again the story, the lady asked me to reboot the modem which i did , and of course the line was synchronized now. And here it comes...."Ok Mr XXXXX now everything seems fine"

I explained to her that my modem looses its synchronization 2-3 times per day and she answered that she cannot sent an engineer around as my line is working!!

Upstream transmit Power Level : 50.0 dBmV
Downstream SNR : 34.5 dB

My modem stats look ok. Here are some errors from modem's log:

Time Not Established Time Not Established 8 Critical(3) 68000300 DHCP WARNING - Non-critical field invalid in response.Time Not Established Time Not Established 1 Critical(3) 82000200 No Ranging Response received - T3 time-outTime Not Established Time Not Established 1 Critical(3) 68000300 DHCP WARNING - Non-critical field invalid in response. Time Not Established Time Not Established 2 Critical(3) 82000200 No Ranging Response received - T3 time-out Time Not Established Time Not Established 1 Critical(3) 68000300 DHCP WARNING - Non-critical field invalid in response. Time Not Established Time Not Established 2 Critical(3) 82000200 No Ranging Response received - T3 time-out Time Not Established Time Not Established 4 Critical(3) 68000300 DHCP WARNING - Non-critical field invalid in response. Fri Mar 24 08:39:34 2006 Fri Mar 24 08:39:34 2006 1 Critical(3) 82000400 Received Response to Broadcast Maintenance Request, But no Un... Thu Mar 23 21:14:57 2006 Thu Mar 23 21:14:57 2006 1 Critical(3) 82000500 Started Unicast Maintenance Ranging - No Response received -

Any help would be really appreciated

Graham M · 02-04-2006, 17:45

I may be wrong but the power levels seem excessively high there? In which case there most definitely is a problem with your signal levels or the modem itself.

nrg_polini · 02-04-2006, 18:03

OK i looked here http://www.cableforum.co.uk/board/sh...ad.php?t=26006 about cable modem signal levels and i copy paste mine:

Downstream Receive Power Level : -4.2 dBmV
Downstream SNR : 34.6 dB
Upstream transmit Power Level : 50.0 dBmV

According to this guide the only "strange" value is Downstream Receive Power Level : -4.2 dBmV which should be +- 3dBmV.

Graham M · 02-04-2006, 18:33

I thought the Upstream seemed a tad on the high side. Perhaps someone more knowledgable will be along soon.

SLM · 02-04-2006, 22:14

Quote:

Originally Posted by nrg_polini

OK i looked here http://www.cableforum.co.uk/board/sh...ad.php?t=26006 about cable modem signal levels and i copy paste mine:

Downstream Receive Power Level : -4.2 dBmV
Downstream SNR : 34.6 dB
Upstream transmit Power Level : 50.0 dBmV

According to this guide the only "strange" value is Downstream Receive Power Level : -4.2 dBmV which should be +- 3dBmV.

Nothing to be that concerned about there, make sure all the connections are secure and tight and there are no kinks in the incoming cable, make a note of when you lose connection and when you have a few days worth ring up and let them know your connection dropped at these times and ask for a visit by a fault tech as it is dropping out to many times a day.

slinux · 03-04-2006, 23:49

My connection has been playing up today... Connection drops, reboot the modem and everything is fine again. I am using an old Surfboard 4100 in the Colchester area. Don't think your problem is power. Had a similar problem a few weeks ago. Been on holiday for 2 weeks so don't know what it has been like in between...