Hogwash posted this last September, but his points bear repeating.
It takes four wireless access points to cover my house. They are already set up and I really don't need or want wireless capability built into my cable modem. (And, no matter what the commercial says, one wireless router simply isn't going do my whole house!)
It shouldn't be a big reach for Rogers to offer modems. The fact that they deliberately aren't offering modems is a craven, self-serving decision that attempts to maximize their monthly device rental income. It's a short sighted strategy.
Hitron makes a 24x8 DOCSIS 3.0 modem, the CDA-32372.
Given the symptoms described in this thread, it's likely that this modem would work OK. (Well, I wouldn't bet a lot on it, but odds are it would be OK.)
However, I have a question.
Hitron bills this as a "modem" only, but the App Diagram they give in the link below shows several LAN devices connected to the modem with only a "switch" in between. I always thought that you needed a full gateway/router with NAT, DHCP, etc. to hang multiple devices onto a LAN.
So either this "modem" is actually a gateway/router, or the diagram is in error. If this modem actually acts as a full gateway/NAT router, then it could very well suffer from the same problems as the CGN3 since a lot of the internal code will be in common.
http://www.hitron-americas.com/products/cda-32372/
Rogers. Please give us a plain high speed (24x8) cable modem! Maybe even one that works for more than a day at a time?