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4 upstream channel bonding - post here
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Old 26-05-2018, 08:24   #61
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Re: 4 upstream channel bonding - post here

4 is better than 2. QAM64 better than QAM16.

It allows the system to better balance / share the available capacity.
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Old 26-05-2018, 10:55   #62
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Re: 4 upstream channel bonding - post here

Quote:
Originally Posted by heero_yuy View Post
4 is better than 2. QAM64 better than QAM16.

It allows the system to better balance / share the available capacity.

Is there any chance of getting QAM64 or do this not get upgraded readily by VM?

And what does that do, provide faster speeds or does it help with latency?
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Old 26-05-2018, 11:07   #63
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Re: 4 upstream channel bonding - post here

Has anyone noticed an actual improvement in service when going from 3-4 upstreams?

Still on 3 but never had an issue with congestion, suspect that's why we're still on 3

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Old 26-05-2018, 11:08   #64
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Re: 4 upstream channel bonding - post here

The level of modulation used is a result of the hub negotiating the connection to the cabinet. If the signal to noise ratio is good enough the connection will automatically go to QAM64.

Higher modulation means more throughput and you're more likely to get your provisioned speed.

Don't think it improves latency though.
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Old 26-05-2018, 12:54   #65
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Re: 4 upstream channel bonding - post here

Quote:
Originally Posted by ethan103 View Post
And what does that do, provide faster speeds?
I wont bore you with the technical details but qam64 is 50% faster than qam16. The idea is that more channels increases the amount of available bandwidth and couple that with increased modulation increases it further. So.........going from 2 upstreams at qam16 (which is what everyone used to be on) to 4 upstreams on qam64 triples (x3) the amount of available bandwidth to you. It sounds great but isn't going to do anything for you unless you had issues to start off with (which I never have) plus it gives them plenty of leg room for future upgrades.

Quote:
Originally Posted by heero_yuy View Post
Don't think it improves latency though.
nope

Quote:
Originally Posted by Synthetic View Post
Has anyone noticed an actual improvement in service when going from 3-4 upstreams?
nope
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Old 26-05-2018, 13:57   #66
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Re: 4 upstream channel bonding - post here

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Originally Posted by General Maximus View Post
So.........going from 2 upstreams at qam16 (which is what everyone used to be on)
Some areas still are on that. I know this area was, unless it's changed in the last few weeks. I could connect the Hub up to see, still got a week or so before the cancellation goes through.
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Old 26-05-2018, 14:09   #67
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Re: 4 upstream channel bonding - post here

Yes still on 2 upstreams in cb24, I am along way from the cabinet so I guess that is why I never see qam64.
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Old 26-05-2018, 19:13   #68
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Re: 4 upstream channel bonding - post here

Quote:
Originally Posted by Jon22 View Post
Some areas still are on that. I know this area was, unless it's changed in the last few weeks. I could connect the Hub up to see, still got a week or so before the cancellation goes through.
I visited my parents in Newport today and they are on 4 x 16qam. I'm a few miles down the road still on 2 x 16qam.
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Old 26-05-2018, 21:16   #69
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Re: 4 upstream channel bonding - post here

The only thing I've noticed is that my graph went from this:




To this:

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Old 27-05-2018, 00:18   #70
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Re: 4 upstream channel bonding - post here

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Originally Posted by Inactive Digital View Post
I visited my parents in Newport today and they are on 4 x 16qam. I'm a few miles down the road still on 2 x 16qam.
Interesting, wonder if the local node has been done. Hopefully it has as would of helped with the upstream congestion, if not solved it. Still not enough for me to cancel the cancellation though.
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Old 27-05-2018, 12:00   #71
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Re: 4 upstream channel bonding - post here

I now have 4 bonded upstreams since rebooting my hub yesterday (St Helens area).

1 32600000 36.3 5120 16 qam 3
2 53700000 37.8 5120 64 qam 5
3 25800000 36.3 5120 16 qam 4
4 39400000 37.8 5120 16 qam 2

Only 537 is 64QAM but I've been told that's normal for my area?
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Old 27-05-2018, 18:02   #72
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Re: 4 upstream channel bonding - post here

Quote:
Originally Posted by JordanTheToaster View Post
The only thing I've noticed is that my graph went from this:




To this:

More Upstream channels better latency as not as congested as before.
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Old 27-05-2018, 18:54   #73
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Re: 4 upstream channel bonding - post here

I thought so still a welcome surprise just getting 4 up channels randomly.
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Old 27-05-2018, 19:13   #74
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Re: 4 upstream channel bonding - post here

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Originally Posted by JordanTheToaster View Post
I thought so still a welcome surprise just getting 4 up channels randomly.
Let's hope the next step is a capable CPE with has a modem mode from day 1 and no chipset issues
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Old 05-06-2018, 21:44   #75
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Re: 4 upstream channel bonding - post here

4x QAM64 upstream channels on my Dad’s connection now. On Telf14.
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