[CLUE-Tech] IDSL (was Of Security and Firewalls..)

[Grant Johnson]

At 09:30 AM 03/22/2001 -0700, you wrote:
>One of the fixes too (as I had that same problem) is that the first group
>of cable modems were crap.  Was when they firware upgraded the router.
>
>There was large amounts of problems with the first modems not being
>properly DOCSIS compliant and as such when the firware was upgraded
>to be "more" DOCSIS compliant many of the original modems broke.
>
>It was only when they got to true DOCSIS on the routers and gave me a
>properly flashed cable modem when my problems stopped.
>
>ian


My problems were not firmware fixable.  The signal was clipping at the 
incoming preamp.  That clipping, squaring the waves off, gave terrible high 
frequency interference, and really confused the A/D converters or 
demodulators or something in there.