Sorry, the direct link cannot be supplied.
Start at this link:
http://support.cox.com//sdcxuser/asp/cox_main.asp
Select Learning Center--Cable Modems
Then Information: Cox Compatible Cable Modems
You will get a list of supported modems.
The one I was having trouble with is the Linksys BEFCMU10 v3 .
The one we used in the test was Terayon TJ715x .
As you can see both those modems are listed in the table.
In each and every case the support person insisted that those modems were NOT supported. When I would guide them to the Cox web page where they were listed, they seemed confused. Apparently they are working from a different list or internal information different than that shown to the customer.
The Linksys modem was purchase new 5 years ago. Because of the problems, I wished to retire it and and use the Terayon modem instead, as it was rock solid and with good signal strength and SNR based on the extensive tests the 4th tech support person did.
However, each tech support person checked the MAC and SerNum of the Terayon modem and insisted that since the modem was a used modem and still registered in the Cox database as belonging to the *previous owner*, that Cox had no way of assigning it to me.
So I have a perfectly good modem, on the Cox recommened list, that Cox will not allow me to use.
Cox wants me to shell out $70 for a new modem.
That a RipOff.