Its better to do a face interview....
The person will only have ur resume.. it will be good to connect the resume with the face..
my example..
in one recruiting event, I received a resume from some guy I dont even remember... the resume was ok.. not much in qualifications..(no technical faults, no grammar errors... just not much experience)
I thought of not calling him for an interview... but then I had time so I scheduled a meeting...
needless to say, he was the best candidate for the job....the guy was energetic, had very good ideas of what he wanted to do in life, why he wanted the job..his preparedness and his positive attitude made him a clear winner..
now if I only met the person via phone.. i would not even find out that this guy was soo goood...
for ethnic prejudice.. I dont think it is an issue...if it is. then that person should not be in b-school or qualified to be an alum interviewer...
but even if you factor ethnic issues..if its a guy..issues fly out of the roof.
if its a woman. .she will end up talking with you about how her boyfriend is keeping the toilet seat up (guys..keep the seat down...else learn about the battle of the Bulge..and how to retreat or fight back)
I think you have a much better chance interviewing face to face.
Good luck with the interview..
I just did a proxy interview with a b-school student.. it was a comedy riot..
my why MBA answer was soo poor..