1. International Reverse Charge calls- Contact the operator in the country you are calling from and if your call is placed through to Optus Operator Services, you will be asked for the phone number and for the name of the person who will agree to pay for your call.(Google)
2. Call charges will be reallocated to the main directory number if a reverse charge call is accepted on a Your Call additional telephone number.(Google)
3. In most countries you can call free of charge. Everywhere else, you can make a reverse-charge call. Our multi-lingual staff will be able to answer your questions.(Google)