NO, don't try, even some ADSL modems from US are
not compatible with BELL. There are one or two
small ADSL ISP in Montreal, offer faster service
than BELL sympatico, but more expensive. ($50).
Worst thing is, you cannot use your own modem if
you subscribe to BELL except you are the employee of BELL.
You need RENT the modem which is $10 a month.