ALL OUTGOING CALLS FROM USA HAVE TO START WITH 011
SEE FOLLOWING EG WITH IMAGINARY NUMBERS--->
1.To dial a mobile number in Delhi:9219234566
011-91-9210234566
so for mobile we dont need std code of city
2.To dial a landline number say 56567575 in Delhi:
011-91-11-56567575
in this the 3rd number[-11-] is STD code of Delhi without the zer