OC it depends on the CMTS and firmware installed in it at the other end, but im pritty sure the official spec for Docsis2.0 (the default freqs etc that Docsis (2.0B-)3.0 is using states that a single Eurodocsis channel uses a MAX of 50Mbit before overheads.
take a look at the ARRIS PDF for a chart
http://www.arrisi.com/product_catalo...Technology.pdf
that shows for QAM 64 on US docsis with 2 channels,so id assume the kit can do a max upto 60 Mbit per channel before overheads with a higher QAM (is that 256 max currently ?) and a future firmware if needed.
with the current minimum Docsis 3.0 spec of 4 DS bonded channels allowed, thats 160Mbit down and 120mbit up, 40Mbit download per channel and 30Mbit upload per channel.
its all in the No.s, so...
24 bonded channels give you
960Mbit/s download and 720Mbit/s upload.
and although (if ever)it might take a while to see 125 DS channels 
the currently highest spec for 3.0, thats 5Gb/s download and 3.75Gb/s upload
its strange they didnt just TOP spec for max 10Gigabit of bonded channels Download though?...
lets just hope the 3rd party network card venders get off their backsides and start producing 2/4/6/8 and/or 10gig NCs for the home users markets.
or at the very least, (actually it might be the far better option in the SHORT TERM) microsoft provide a free generic bonding interface driver ASAP, so we can bond our NCs together to get higher throughput to the likes of freeBSD/linux home made NAS servers (and even MS machines if they supply the bond driver), and later, multi gigabit hardware devices such as any bonded cable modem above the 24 channels (1 gigbit)it would take to fill that pipe
http://www.cableforum.co.uk/board/10...l#post34456487
---------- Post added at 12:15 ---------- Previous post was at 11:25 ----------
BTW, increased security for DOCSIS 3.0 comes in with Silver certification.
some of the more vital specs per certificate:
Bronze mandate: Multicasting, IPv6, downstream channel Bonding.
Silver mandate: QOS multicasting, Enhanced security AES,Upstream channel Bonding.
FULL :with all the spec certifyed.
as for seeing at least 40Mbit on the initial 50Mbit/1.5 or 5Mbit (10/1 ration) perhaps, package once it becomes available, id assume it to supply 48.5Mbit real download on internal throughput and external routes to/from good servers, and the upload rate at 1.45/4.95Mbit servers permitting OC.
---------- Post added at 15:02 ---------- Previous post was at 14:44 ----------
Quote:
Originally Posted by sollp
Problem is,(well one of many i see) is the Access network in alot of places will need up grading to be able to achieve more bandwidth in the upstream. Many areas only have the 5-40mhz to play with on the upstream and mainly all areas only use from 18-44mhz approx. So the network architecture can vary immensely depending on the legacy companies it originated from.
So again the potential is there buts its going to cost eventually, initially it won't be much of a problem but with more channel bonding for the upstream, it's going to be tight in that small space.
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what is the general consensus here with the VM techs etc for growing that space (as layed out in the general docsis3 upgrading/todays Best Practices Preperation advice 33) within the VM network?, is it currently layed out something like the
http://www.bloobble.com/broadband-pr...epsession=true
slide 25 and 26 of the ARRIS flash presentation?, and at what % of current filtering kit within the whole UK CABLE network can take the redeployment for freqs.
in effect it seems to use the redeployment of the analogue freqs to get max benefits, is there currently enough unused freqs for use in every area of the UK cable network to start deploying docsis3 in the baguley and other headends...
perhaps a simple laymans terms document can be produced to help understand the while thing and the way it interacts for readers...