International call forwarding works by receiving incoming calls from originating phone numbers (local and international calls) and forwarding the call to a number predetermined by our customer. This predetermined destination number can be a local or international number. In other words, our customers can answer incoming calls in any location. All of this is done through our call forwarding network. We have local and toll free numbers available in most countries; our inventory has numbers in 170+ countries.
Do Callers Know Their Call is Being Forwarded? | Call Forwarding
No. Callers are unable to recognize that their call is being forwarded unless you let them know. In the control panel, you can set specific local ringback tones of origination countries for more integration.