Why do think like that, be positive man. Who told the 
person who came from abroad never join in a call center.  
You want to join in a call center,u need not have past 
experience. They want only good communication skills and 
good english.if any one ask like that you tell what u have 
done in abroad.

if u will face that type of question u should give answer like 
this
      ( sir . i have six months gap, in that i have done some 
jobs .but i didnt got any chance to excell my tallent
completly. i want to do a job in which has more intraction
with the public.thats why i want join in callcenter)

hi u must tell to tthe intervier that u r dream was going 
to abroad and now geeting experience over there i would 
like to use my skills here. like to work in acall center we 
must now some knowledge about their culture and their 
behavior .and u can better understand how the opposite 
person speaks .thats all

hi u should always answer like this 
yes, i am intrested in call centre and I love to interact 
with people across the globe.

Hi dear ,I would appreciate if u keep the following points 
in mind before going for any interview:
(1):We r going for interview because we need job ,same the 
HR who is sitting there to take interview equally need a 
good candidate for his organisation ,they also have there 
deadlines so both r on same page as we need them they also 
need us ,so be confident.
(2):U have done Btech ,i know sometime it is realy 
difficult to make career in our field ,in the starting we 
will get very less salary ,but i would advice u if u can 
try to find out job in your field only ,if u want to join 
BPO try to work for TECHNICAl Process.
(3):In BPO ,the most important things that the interviewer 
look into interview are :
a.Communication Skills,
b.Stability,
c.Positive Attitude 
what ever reason u give for the gap these qualities must be 
there even u want to skipp anything u can do.