Re: 4 upstream channel bonding - post here
 

Cool, 4 x qam 16 is better than 2 x qam

Re: 4 upstream channel bonding - post here
 

Still 2 x 64QAM in Uddingston

Re: 4 upstream channel bonding - post here
 

This also caused my IP address to change, is that normal?

Re: 4 upstream channel bonding - post here
 

If they moved you to a different CMTS then yes. i.e. they've upgraded your local hub site.

Re: 4 upstream channel bonding - post here
 

I just need to get them to fix my levels now as i have a huge slope of -8.6 to +6.5 since they did this, but before it went from -1.0 to +9, even after a cable repull, just waiting for a response on their forum, as i also can't watch 15 HD TV channels due to breaking up.

Next door neighbours TV channels are fine and his brown box is on the same wall and a few metres away so i am thinking it is the 25 thinner cable that is running around the outside wall that could be the issue?

Re: 4 upstream channel bonding - post here
 

Been having noise issues the past week (upstreams dropped from 64qm to 16) just had about an hours outage and it's come back with 4 upstreams, but still 16qam, does this still suggest a noise issue on the 4 channels?

https://www.cableforum.uk/images/local/2018/08/12.png

Cheers!

Re: 4 upstream channel bonding - post here
 

Ya, you'll see them go back up to qam64 over the next couple of days and transition to qam32 in the meantime as things improve.

Re: 4 upstream channel bonding - post here
 

Cheers General, VM are apparently monitoring the area but can't tell me if the 4th was added *because* of the noise issue or they already had plans to add a 4th channel and it just happened to coincide with this noise issue.

Does anyone know if networks are upgrading the CMTS to add another channel, would they notice the noise on it, or would they just ignore it because "that's not what they're there to do" sorta thing?

Re: 4 upstream channel bonding - post here
 

The 4th channel should be there to stay. Adding an additional channel to an upstream bonding group is a big change and i never heard of them doing it short term to mitigate a 33% drop in capacity due to noise. If they did (which i very much doubt) it will be out sheer desperation and your area must be at the absolute limit of capacity.

Re: 4 upstream channel bonding - post here
 

Thanks again General, this area has never had contention previously, although that's not to say we've not hit it, speed seems fine during peak times even with the noise issue, just had some drop outs and general "laggyness" which i guess is down to the noise.

Re: 4 upstream channel bonding - post here
 

Still on 2 (64 qam) channels here.

Re: 4 upstream channel bonding - post here
 

Forgot to mention above, Gateshead area, NE8

Re: 4 upstream channel bonding - post here
 

More work being done still on 2 up

https://www.cableforum.uk/images/local/2018/08/16.png

Re: 4 upstream channel bonding - post here
 

SM4 area - Fed from New Malden

Earlier this month I got an email from Virgin Media Business to advise of planned work due to take place today that would cause a short outage. That did happen at about 10:30 this morning, and have now gone from 3 x QAM64 upstream channels to 4 x QAM64 upstream channels.

So currently on a 32 channel downstream group and 4 x QAM64 upstream. Like the residential devices - the business Hitron can only use 24 of those 32 downstream channels.

Re: 4 upstream channel bonding - post here
 

4x 64QAM in Slough, Berkshire

Looking good!