I have a friend down in Houston who is on Cingular; he's traveling up to Calgary, AB for a conference the following week and has a quick question.

Which Canadian carrier will allow his Cingular account to roam in that area? I know that Bell and Rogers AT&T are TDMA/CMDA carriers but who would handle Cingular.

He's already called Cingular and has gotten no information -- general runaround, but no promises that it'd work at all.