Quote:
Originally Posted by ccarmock
Spot on - my upstream is channel 2 at 25.8 Mhz, TDMA
I'll see if I can find the 29.2Mhz one. Hopefully they will move to ATDMA and 18 Mb/s before too long, since the upgrade work seems to be in progress given I noticed the move from QPSK to 16QAM on DOCSIS 1. The DOCSIS 1 network here seemed to have three upstreams. Do you know if the upstream upgrade work provides more upstream channels as well as increasing the capacity of those already available? Where more than one is available what determines which one the modem will lock onto?
Also in a given area on DOCSIS 3 are the same 4 downstreams used by all or are there a pool of channels available and the modem will select 4 of them?
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There may or may not be a 29.2MHz channel available.
There will indeed be additional upstreams ready to go with the upgrade work. At the moment the network is restricted to a shade over 30MHz as end point for upstreams, the upgrade work increases this to 85MHz.
In a given area the same downstreams on DOCSIS 3 are used by all devices - if there were two pools of channels it would make far more sense to put them all together as one single 8 channel bonded group than to split them into 2 x 4.