A-Party in Delhi AIRTEL
B-Party in Delhi BSNL
Lets Say the B-Party gone to London from India.A-prty calls B and AIRTEL GMSC is getting UK-MSRN.
Who will pay this Bill ?
A-Party who just made a Local Call from ?
A-Party Network ?
B-Party wont accept if you ask him to pay this Bill.
This is where the Billing Isssue Comes Up.