PDA

View Full Version : my internet goes off and on:(

scumacher101
22-08-2009, 21:40
hello everyone ive been havin abit of trouble with my virgin media broadband for the last month or 2.
what happends is im connected for periods of times then all of a sudden it will stay in my system tray but when i try to access the internet when internet exploer is running it says finding site. its just stays likes then until i reboot the modem down stairs/please help me ppl...


my connection is 20 meg btw.....
Peter_
22-08-2009, 21:45
Post what modem you have and your power levels from your config pages of your modem. The should be a sticker on the bottom saying what model.

If using an Ambit modem please click here
http://root:root@192.168.100.1/CmOpConfig.asp

If using any other modem click here
http://192.168.100.1/

What I want you to post is the Downstream power levels including the SNR and the Upstream power levels for me thanks.

DO NOT POST YOUR MAC ADDRESS OR SERIAL NUMBER
scumacher101
23-08-2009, 13:56
my modem is a ntl 250.


Cable Modem : Euro-DOCSIS 1.0/1.1/2.0 Compliant.
Ben B
23-08-2009, 14:04
my modem is a ntl 250.


Cable Modem : Euro-DOCSIS 1.0/1.1/2.0 Compliant.

Go to http://192.168.100.1 login with the username root and the password root and post everything from the downstream and the upstream page
scumacher101
23-08-2009, 14:09
Downstream Lock : Locked
Downstream Channel Id : 19
Downstream Frequency : 299000000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 6952 Ksym/sec
Downstream Interleave Depth : taps12Increment17
Downstream Receive Power Level : 5.2 dBmV
Downstream SNR : 39.4 dB


Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 1
Upstream Frequency : 47400000 Hz
Upstream Modulation : QAM16
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 48.0 dBmV
Upstream Mini-Slot Size :
Toto
23-08-2009, 15:01
Out of curiosity, what software firewall, if any, do you have installed, because the problem you describe is exactly the same problem I had when I used a particular firewall, which I am not now using.

AND, :welcome: to CF.
scumacher101
23-08-2009, 15:01
im using the windows 7 64 bit one..
Toto
23-08-2009, 15:07
OK so not Zone Alarm then.
xocemp
23-08-2009, 23:05
hello everyone ive been havin abit of trouble with my virgin media broadband for the last month or 2.
what happends is im connected for periods of times then all of a sudden it will stay in my system tray but when i try to access the internet when internet exploer is running it says finding site. its just stays likes then until i reboot the modem down stairs/please help me ppl...


my connection is 20 meg btw.....

And your PC is upstairs?
Do you connect wireless/router by any chance?
webcrawler2050
23-08-2009, 23:07
Downstream Lock : Locked
Downstream Channel Id : 19
Downstream Frequency : 299000000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 6952 Ksym/sec
Downstream Interleave Depth : taps12Increment17
Downstream Receive Power Level : 5.2 dBmV
Downstream SNR : 39.4 dB


Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 1
Upstream Frequency : 47400000 Hz
Upstream Modulation : QAM16
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 48.0 dBmV
Upstream Mini-Slot Size :

Upstream is a little high I think, can a vm guy confirm?
xocemp
23-08-2009, 23:08
Upstream is ok webcrawler2050.
webcrawler2050
23-08-2009, 23:10
Upstream is ok webcrawler2050.

Thought so, just look a little high / border line?

Can you confirm how your connected to the VM kit?
Axegrinder
23-08-2009, 23:36
55dbmv is the limit for QAM16.
Ignitionnet
24-08-2009, 00:02
55dbmv is the limit for QAM16.

If on DOCSIS 3 kit the limit goes up to 58dBmV. Swift FYI there :)

48dBmV is spot on though, not high at all. For upstream transmit power lower isn't necessarily better it's all about how the network has been configured and where the modem sits on the network.