[BiPolar_Nut]

Dialup over vonage or other VoIP system may or may not work reliably. Converting analog modem signals to digital for VoIP transport then back to analog either won't work at all, will only connect at low bit rates, or will drop more often than a plain ole telephone line. If you're lucky, then it could be stable enough to work, but it's a real sketchy method.

If you had a good long distance plan to Canada over a standard copper telephone line, then the dialup route would work as well as any other dialup service to the US. You may need to disconnect your local network cable to ensure the dialup gateway gets used as the default and not your cable connection.