VoxNumbers service works as Pay as you Go and incoming calls are free only if you forward calls to a Voicemail or to VoIP/SIP account.
But if you use call forwarding feature you'll be charged a per-minute rate for every incoming call according to the destination you forward your calls.
Please click here to find pricing for call forwarding fees.
Your account is opened with $1 of prepaid credit so you can start receiving calls even if you forward your number to any destination in the world. But in order to continue receving calls with call forwarding feature you need to buy prepaid credit and make sure you have sufficient funds.
You can always forward calls FREE to Voicemail or to VoIP/SIP accounts.
If you are forwarding calls to another phone number in the world and if you do not have prepaid credit, your calls would be automatically forwarded to voicemail.
You will be notified with an email that your monthly fee has not been charged and if you do not pay the monthly fee of your plan in one week, your account will be cancelled.