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DOCSIS 2.0 versus DOCSIS 1.1

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catvdude
DOCSIS 2.0 versus DOCSIS 1.1

Can someone tell me in a nutshell the main difference and benefit of 2.0 versus 1.1?

cmcaldas
Simple

Dcosis 2.0 gives you more upstream. channel width and modulation.
1.1 gives you qpsk and 16qam up to 3.2Mhz wide
2.0 gives you qpsk, 16qam, tdma, scmda up to 6.4Mhz wide. so you can now ad 32qam, 64qam and 256qam on the return

~Carl

cmcaldas
Simple

Dcosis 2.0 gives you more upstream. channel width and modulation.
1.1 gives you qpsk and 16qam up to 3.2Mhz wide
2.0 gives you qpsk, 16qam, tdma, scmda up to 6.4Mhz wide. so you can now ad 32qam, 64qam and 256qam on the return

~Carl

cmcaldas
Simple

Dcosis 2.0 gives you more upstream. channel width and modulation.
1.1 gives you qpsk and 16qam up to 3.2Mhz wide
2.0 gives you qpsk, 16qam, tdma, scmda up to 6.4Mhz wide. so you can now ad 32qam, 64qam and 256qam on the return

~Carl

blazemuffin
really d2.0 is mainly

really d2.0 is mainly upstream oriented around increased upstream bandwidth features. If your plant, cmts linecard and modems in the field can support it, you can offer greater upstream rates and decrease congestion on your return.

benefits from 2.0 - 6.4 channel width w/ docsis-mode atdma supporting up to 64Qam on the return.

windwaterwaves
Docsis Info

Wikipedia has a great write up on docsis http://en.wikipedia.org/wiki/Docsis

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