In a previous article, Brian Burger said:
Before we get all haughty, consider that Canada Custom's CANPASS number (a
1-800-#) does not work from celphones in the US.

Maybe if you dialed the right number, you'd be able to get through. (It's
1-888-CANPASS, not 1-800-CANPASS).

It works fine from celphones in Canada, and from landlines in either
country, but not from a Canadian celphone on ROAM in the US.

It also works fine from US cellphones in the US and Canada.

--
Paul Tomblin http://xcski.com/blogs/pt/
Quando omni flunkus moritati (when all else fails play dead)