Call barring allows you to block specified incoming calls (provided you have subscribed to caller ID). Call restriction prevents certain numbers being dialled for outgoing calls, for example you can restrict all 0845 numbers being dialled.
What does it mean when Verizon says there are calling restrictions?
If you hear this message when making calls, "Welcome to Verizon Wireless. We cannot complete your call at this time. Calling restrictions for this cellular telephone prohibit direct dialing beyond your designated service area.", check the following: Make sure you're inside your plan's coverage area.
What does it mean when you call a Verizon number and it says calling restrictions?
The key here is the reference to "Calling Restrictions." It is possible that your friend is using a call blocking feature that blocks calls from specific phone numbers.9 nov 2017