Quote:
Originally Posted by broadbandbug
Whilst the DoCSIS 3.0 Modems only have the ability to be registered on a single upstream and that upstream can only be 3.2Mhz QAM16 (10Mb/s) then it is very unlikely that 5Mb/s Upstream would be viable (2 simultaneous users bust the upstream). Higher Upstream may come when upstream channel bonding is available (2009/2010).
The other option is to spend shed loads of money to bring the return path up to a higher quality to support QAM32 or QAM64.
---------- Post added at 07:18 ---------- Previous post was at 06:59 ----------
I am interested how some of you feel it possible for VM to offer greater upload speeds on a network that only has 30Mhz return path spectrum in which to work?
To me that breaks down as only having between around 18Mhz and 30Mhz to use, so 4 upstream channels.. 3 x 3.2MHz QAM16 and 1 x 1.6Mhz QPSK shared across around 400 customers
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But again that goes back to the fact when 50mbit was in planning stages and they had the go ahead...they had enough money to upgrade a hell of alot of the kit and to make upstream bonding possible (i know the planned upload for 50mbit was originally 5mbit per the stage 1 planning), then..it was decided it wasnt *viable* (which really meant, stuff payin for all that, i want my big fat bonus, again) and it got scrapped, half the money got taken away and now we are going to have a half assed service.
Ironically that's what happened to comcast...till the customers found out and they were -forced- to cough up.
Too bad we cant do the same with VM.
It's like this 40G linkup fiasco, they was supposed to upgrade to 100G before neil came into play...now they are showing off about 40? that's nice..it isnt really gonna help the network when you have 50mbit coming into play. oh wait...yes it will because they refuse to provide any good type of upload.