4 upstream channel bonding - post here
26-05-2018, 07:24
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#61
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Perfect Soldier
Join Date: Mar 2009
Location: Worthing West Sussex
Age: 66
Services: VM 500M SH3 thingy
in modem mode
XL TV V6 Sony Bravia smart TV and M phone
Posts: 10,989
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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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History is much like an endless waltz: The three beats of war, peace and revolution continue on forever.
However history will change with my coronation - Mariemaia Khushrenada
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26-05-2018, 09:55
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#62
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cf.addict
Join Date: May 2009
Location: Manchester
Services: VM350, Sky Q Silver.
Posts: 410
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Re: 4 upstream channel bonding - post here
Quote:
Originally Posted by heero_yuy
4 is better than 2. QAM64 better than QAM16.
It allows the system to better balance / share the available capacity.
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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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26-05-2018, 10:07
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#63
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cf.geek
Join Date: Jul 2010
Location: Newcastle
Posts: 785
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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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26-05-2018, 10:08
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#64
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Perfect Soldier
Join Date: Mar 2009
Location: Worthing West Sussex
Age: 66
Services: VM 500M SH3 thingy
in modem mode
XL TV V6 Sony Bravia smart TV and M phone
Posts: 10,989
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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.
__________________
History is much like an endless waltz: The three beats of war, peace and revolution continue on forever.
However history will change with my coronation - Mariemaia Khushrenada
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26-05-2018, 11:54
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#65
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Ran Away
Join Date: Nov 2008
Location: Lincoln
Services: phone + 1gbit BB + SkyQ
Posts: 11,021
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Re: 4 upstream channel bonding - post here
Quote:
Originally Posted by ethan103
And what does that do, provide faster speeds?
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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
Don't think it improves latency though.
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nope
Quote:
Originally Posted by Synthetic
Has anyone noticed an actual improvement in service when going from 3-4 upstreams?
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nope
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26-05-2018, 12:57
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#66
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cf.addict
Join Date: Jul 2010
Location: Newport, Shropshire
Posts: 338
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Re: 4 upstream channel bonding - post here
Quote:
Originally Posted by General Maximus
So.........going from 2 upstreams at qam16 (which is what everyone used to be on)
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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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26-05-2018, 13:09
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#67
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CF Resident Dog
Join Date: Mar 2005
Posts: 14,254
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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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PSN: Snoopzster
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26-05-2018, 18:13
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#68
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cf.addict
Join Date: Aug 2016
Services: VM broadband, Stream, phone. Sky Q
Posts: 430
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Re: 4 upstream channel bonding - post here
Quote:
Originally Posted by Jon22
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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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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26-05-2018, 20:16
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#69
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I Toast Bread
Join Date: Nov 2015
Location: Bath
Age: 26
Services: Vivid 350?
Posts: 254
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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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26-05-2018, 23:18
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#70
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cf.addict
Join Date: Jul 2010
Location: Newport, Shropshire
Posts: 338
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Re: 4 upstream channel bonding - post here
Quote:
Originally Posted by Inactive Digital
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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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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27-05-2018, 11:00
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#71
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cf.member
Join Date: Sep 2016
Posts: 48
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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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27-05-2018, 17:02
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#72
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cf.addict
Join Date: Jun 2009
Posts: 108
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Re: 4 upstream channel bonding - post here
Quote:
Originally Posted by JordanTheToaster
The only thing I've noticed is that my graph went from this:
To this:
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More Upstream channels better latency as not as congested as before.
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27-05-2018, 17:54
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#73
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I Toast Bread
Join Date: Nov 2015
Location: Bath
Age: 26
Services: Vivid 350?
Posts: 254
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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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27-05-2018, 18:13
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#74
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cf.addict
Join Date: Jun 2009
Posts: 108
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Re: 4 upstream channel bonding - post here
Quote:
Originally Posted by JordanTheToaster
I thought so still a welcome surprise just getting 4 up channels randomly.
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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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05-06-2018, 20:44
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#75
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cf.addict
Join Date: Jul 2010
Location: Newport, Shropshire
Posts: 338
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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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