Quote:
Originally Posted by Kushan
I've already conceded that 10 channels must be a thing.
Gee, thanks for that. Says the person who skipped past the post directly above them.
I'm going off what various folks have said about different UBR/CMTS's in use. Forgetting the 10 channel point, I'm still not convinced that 9 channels is anything other than a fault, albeit one that probably has zero impact. The channels are generally in even amounts - 8, 10, 12, 16, etc.
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It is configured that way, and could be intentional for reasons of needing to preserve space on the network for TV channels / VoD.
Some network are being or have been rebuilt to supply more bandwidth, RF bandwidth, for broadband and alongside this capacity for VoD has been reduced and better compression for DTV is a work in progress.
The variations between areas can be quite pronounced now.
The HFC that newly built and newly rebuilt areas will have has 5-85MHz upstream and 105-1218MHz downstream, field adjustable to deliver 5-200MHz upstream and the rest downstream.
Some areas awaiting rebuild will have 5-50MHz upstream and 65-750MHz downstream. 1.1GHz downstream versus 685MHz downstream is a big difference and is why some areas struggle to make room for 12 or 16 channels while others have space for 32 channels plus DOCSIS 3.1 carriers right now.