Yes, there is two types of Call Center i.e. Domestic &
International.

Domestic Call Center - The Domestic Call Center Explain in
the format like the boundary of nation, means for example in
India there is a call center, in that call center the call
receive from state to state (e.g. From Chennai to
Maharashtra)OR in District to District i.e. political
boundary is call Domestic Call Center. 

International Call Center - The International Call Center
Explain in the format like the out of boundary the nation,
means for example in India there is a call center, in that
call center the call receive from nation to nation (e.g.
From America to India) i.e. out of political boundary is
call International Call Center.