reply to daveinpoway
Re: [Business] Buying a DOCSIS 3 Compliant Cable Modem I'm not sure I see the value in that.
Rather then expending time/money/energy on making the 6120 act like a 5120 (sort of like buying a truck with a big V-8 and then cutting 7 of the sparkplug wires)
when with less effort/time/money you could write a generic "I'm a 6120, but I only run in D2 mode"
or what's really needed, "I'm a 6120,running in D3 backward compatible mode, limited to XXX/xxx speeds"
But any given cable provider stiil needs to be sure that mode will work on their system before they go with a system wide release.