Yesterday, 13:04
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#1
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cf.addict
Join Date: Jan 2021
Location: Swansea, South Wales, UK
Age: 45
Services: 1GB Volt, Telephone all Inclusive.
Posts: 298
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Upstream Question.
I have a question regarding my upstream modulation.
Sometime it shows all 5 on Qam 16 sometimes Qam32 and sometimes Qam 64.
Connection seems stable any ideas what could be the cause?
Thanks.
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Yesterday, 13:17
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#2
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In the gang of three
Join Date: Jul 2004
Location: Hiding . . from all the experts
Posts: 5,310
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Re: Upstream Question.
Stop poking about in it?
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If knowledge is power, how come those in power seem so stupid?
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Yesterday, 16:16
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#3
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cf.addict
Join Date: Jan 2021
Location: Swansea, South Wales, UK
Age: 45
Services: 1GB Volt, Telephone all Inclusive.
Posts: 298
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Re: Upstream Question.
I'm not poking about its just something I've noticed.
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Yesterday, 16:24
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#4
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Dr Pepper Addict
Cable Forum Admin
Join Date: Oct 2003
Location: Nottingham
Age: 63
Services: IDNet FTTP (1000M), Sky Q TV, Sky Mobile, Flextel SIP
Posts: 30,844
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Re: Upstream Question.
If your connection is stable, I would not worry about it.
__________________
 Baby, I was born this way.
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Yesterday, 16:55
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#5
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In the gang of three
Join Date: Jul 2004
Location: Hiding . . from all the experts
Posts: 5,310
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Re: Upstream Question.
Quote:
Originally Posted by Corey N Georgie
I'm not poking about its just something I've noticed.
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hmm, if I want to check upstream/downstream and other associated stuff I have to go look for it in settings . . . unless there's now an app that shows it on the desktop?
Incidentally, 72.4% of IT help desk calls relate to people playing where they shouldn't 
__________________
If knowledge is power, how come those in power seem so stupid?
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Yesterday, 17:16
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#6
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cf.mega poster
Join Date: Apr 2004
Location: Northampton
Services: Virgin Media TV&BB 350Mb,
V6 STB
Posts: 8,343
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Re: Upstream Question.
Quote:
Originally Posted by Carth
hmm, if I want to check upstream/downstream and other associated stuff I have to go look for it in settings . . . unless there's now an app that shows it on the desktop?
Incidentally, 72.4% of IT help desk calls relate to people playing where they shouldn't |
Visible in a browser. Typically use 192.168.0.1 as address, then "check router status".
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Yesterday, 18:40
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#7
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In the gang of three
Join Date: Jul 2004
Location: Hiding . . from all the experts
Posts: 5,310
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Re: Upstream Question.
Quote:
Originally Posted by nomadking
Visible in a browser. Typically use 192.168.0.1 as address, then "check router status".
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yes, but why would you?
If people go looking for problems they usually find something that *looks* wrong and then mess about trying to *fix* it 
__________________
If knowledge is power, how come those in power seem so stupid?
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Yesterday, 20:04
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#8
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cf.addict
Join Date: Mar 2005
Location: SE London (Bexley)
Services: None - well none with VM!
Posts: 445
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Re: Upstream Question.
Quote:
Originally Posted by Corey N Georgie
I'm not poking about its just something I've noticed.
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Honestly, I really, really wouldn’t bother about it.
DOCSIS, is a ‘sort-of’ self-adjusting system, that’s how it was designed to work. It constantly makes adjustments based on changing conditions to keep the connection stable. You state that the connection is stable, so it’s doing its job.
Changing conditions? Well maybe someone else on the same network segment has a slightly dodgy connection which sometimes introduces noise/interference into the system? Maybe your area is a bit oversubscribed and at peak times struggles to cope with everyone? Your modem will adjust to compensate.
As long as your connection is stable and your speeds are roughly what you are paying for (incidentally VM doesn’t guarantee upload speeds, for reasons..), then don’t worry about it.
Technically the higher the QAM value, the more data can be sent in a certain time. This is more efficient for both you and VM. But if the local circumstances don't permit it, then the hub will drop the QAM value to ensure stability.
__________________
"I believe in an open mind, but not so open that your brains fall out"
Arthur Hays Sulzberger
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Today, 11:52
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#9
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cf.addict
Join Date: Jan 2021
Location: Swansea, South Wales, UK
Age: 45
Services: 1GB Volt, Telephone all Inclusive.
Posts: 298
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Re: Upstream Question.
Thanks to everyone for the comments useful and not so.
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