This doesn't help anyone, but is an amusing Cable modem anecdote.
I got my cabel modem way back in '97 from TCI. It worked great. I had 8 Mbps up and down load. I was in heaven.
Then AT&T took over, things started slowing down as the network got more congested. I expected that, so I accepted that.
After a couple years, the technology for Docsis cable modems had matured enough that AT&T requested that everyone trade-in their old modems so their DHCP would work better with their new windoes programs. That's the program that assigned IP addresses. I had a grandfathered static IP from the TCI days, and did not use DHCP nor windows, so there was no benefit to changing. I did not want to have to wait for an appointment. I did not want to lose the Static IP that I was given as part of my TCI contract. I simply left it the way it was.
Over the next 6 months I had several discussions with the techs at AT&T asking me to trade in my old Motorola modem for a new docsis complieant one. Each time, the tech would grudingly agree that there is no technical reason that I had to change and that there was no benefit to me. Each time the tech agreed to leave things alone and make a note on my account.
Suddenly, one day, my modem crapped out. No sync. I accessed the modem's control software and verified it had no signal. I checked everything in the house. All was OK, signal wise. I finally called tech support. They went through the normal gyrations, then declared that my signal was too low. They sent a tech within an hour!
The tech immediately replaced my modem, then chose a piece of cable where the service entered the house and declared it substandard. No tests, no investigation, no justification. He cut off the connector and replaced it with an identical one. Then he called the activation center. Like magic, everything worked, but I lost my static address.
It was not until the guy left that I realized that they had taken care of the "problem customer" who was perfectly satisfied with his old equipment. They had simply turned off the authorization for my old modem and blamed teh connection. The new modem was DHCP only (or so they said) and was capped at 1.5Mbps down and 256K up.
And to think I once worked for AT&T.
Daniel
(side note... They once turned off my TV's cable box because it failed to reply to their queries. My son, an AT&T cable rep at the time,told me that it was disabled so that I would schedule an appointment to get it fixed. It seems people aren't too willing to sit around waiting for a cable guy when the box works fine from the customer's point of view.)