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4 upstream channel bonding - post here
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Old 17-08-2018, 15:25   #106
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Re: 4 upstream channel bonding - post here

Cool, 4 x qam 16 is better than 2 x qam
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Old 17-08-2018, 16:48   #107
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Re: 4 upstream channel bonding - post here

Still 2 x 64QAM in Uddingston
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Old 17-08-2018, 23:11   #108
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Re: 4 upstream channel bonding - post here

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Originally Posted by SnoopZ View Post
Since yesterday i have now gone from 2xQAM64s to 4xQAM16s in CB24 area, this is the first time i have been on 4 upstreams.
This also caused my IP address to change, is that normal?
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Old 18-08-2018, 07:56   #109
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Re: 4 upstream channel bonding - post here

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This also caused my IP address to change, is that normal?
If they moved you to a different CMTS then yes. i.e. they've upgraded your local hub site.
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Old 18-08-2018, 10:29   #110
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Re: 4 upstream channel bonding - post here

Quote:
Originally Posted by Sephiroth View Post
If they moved you to a different CMTS then yes. i.e. they've upgraded your local hub site.
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?
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Old 21-08-2018, 13:38   #111
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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?



Cheers!
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Old 21-08-2018, 13:50   #112
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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.
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Old 21-08-2018, 13:53   #113
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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?
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Old 21-08-2018, 14:06   #114
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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.
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Old 21-08-2018, 15:08   #115
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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.
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Old 21-08-2018, 15:24   #116
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Re: 4 upstream channel bonding - post here

Still on 2 (64 qam) channels here.
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Old 21-08-2018, 15:40   #117
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Re: 4 upstream channel bonding - post here

Forgot to mention above, Gateshead area, NE8
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Old 22-08-2018, 12:55   #118
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Re: 4 upstream channel bonding - post here

More work being done still on 2 up

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Old 29-08-2018, 12:37   #119
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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.
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Old 29-08-2018, 12:59   #120
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Re: 4 upstream channel bonding - post here

4x 64QAM in Slough, Berkshire

Looking good!
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Last edited by 2pence; 29-08-2018 at 13:05.
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