Making an overseas call

 

International country codes and exit codes

http://www.howtocallabroad.com/codes.html

International Exit Code 說明

http://blog.masterstudio101.com/2014/09/17/Country%20Calling%20Codes%20%E5%9C%8B%E9%9A%9B%E9%9B%BB%E8%A9%B1%E5%8D%80%E8%99%9F

How to Make a Phone Call in the U.S.

http://www.vidaamericana.com/english/phonecall.html