Intermittent disconnection & installation of webstar drivers

[superbantam]

I've started getting problems with my telewest broadband, where I seem to lose the connection every so often - I have to reset the modem & reboot to fix it

Entires in the log that might relate to this are -

2006-07-16 10:45:24 information Got a map with the new UCD change count, and changed upstream parms
2006-07-16 10:37:54 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out
2006-07-16 03:16:39 error BPI FLASH: The Mfg CA certificate not found!

I decided that maybe if I upgrade the drivers these errors will stop & so my connection will be fixed. However, when I look at device manager to update the driver I can only see two entries under network adapters

1394 net adapter
sis 900-based pci fast ethernet adapter

& no entry for the webstar modem.

I don't want to mess around with things that I don't know too much about so can someone give me some advice as to what I should be doing to upgrade the drivers? (or even some advice on the intermittent disconnections)

Thanks

[Quam256]

Type in 192.168.100.1 in your address bar .
When the config page comes up go to the signal page and find out what your
Downstream power level and SNR and also your upstrem power level are and put them on here.
P.S dont make any changes on here .

[superbantam]

Cheers,

That gives me this info


Downstream Channel
The data shown in the table below provides information about the signal coming from the network to your cable modem.

Downstream Status

Operational

Channel ID

1

Downstream Frequency

331250000 Hz

Modulation

QAM256

Bit Rate

4096000 bps

Power Level

1.86 dBmV

Signal to Noise Ratio

33 dB

Upstream Channel
The data shown in the table below provides information about the signal being transmitted to the network from your cable modem.

Upstream Status

Operational

Channel ID

3

Upstream Frequency

29008000 Hz

Bit Rate

384000 bps

Power Level

45.25 dBmV
The modem is a DPX100 by the way.

[Quam256]

Are far as I can see the levels look fine.
When you loose the connection does the Cable light (bottom light)go out on the modem or does it stay on .
When you loose the connection again before you reboot it ,see if you can get into the config page 192.168.100.1 and if you do renew the page just to makesure.If you can get the config page the problem is not between the modem and the Pc .
Next go to start > run >type in "cmd " hit enter.
type in"tracert www.bbc.co.uk" and hit enter ,this will show you how far your connection goes from your pc before it fails.
Hope this helps.

[Kryton]

I can see your problem straight away, your downstream has locked onto the wrong frequency. I have seen this a few times with Webstar modems, don't know why they do it sometimes. Goto http://192.168.100.1/gscan.htm and change starting frequency to 331000000 Mhz, and restart the modem. Alll will be fine afterwards

[superbantam]

Thanks for the advice Quam256 & Kryton,

Kryton,

I did this & reset the modem - the cable light starting intemittently going on and off & there was no connection. When I checked on 192.168.100.1/gscan it showed the frequency as something like 253123123 though the box for the start frequency did show 331000000. I can only guess it was because I copied and pasted the number from your post, as when I manually entered it & reset it seems to have worked ok. I'll see how I get on in the next few days. By the way, could you tell me briefly what this number actually means/does? or point me at a decent site? I'm just interested in learning a bit more

Quam256,

Just for the record (and anyone else who reads this thread). When I lost connection I could still connect to the modem, and the cable light was on all the time. When I kept refreshing I could actually see the SNR number changing, which was a bit odd.

Doing the tracert www.bbc.co.uk produced the response 'Unable to resolve target system name www.bbc.co.uk' which I guess mean it can't see the DNS server. I tried other addresses too just to make sure with the same error.

Thanks again both of you for the quick & helpful response. I'll post back if I'm still getting errors.

[Kryton]

331000000Mhz is the frequency used for your incoming signal (downstream). SNR will move about but should be fairly stable. The SNR should be >29dB but generally is above 32dB.

[superbantam]

Pleased to say that this change seems to have fixed my problems.

Thanks all.