VoIP calls are not available in certain countries to comply with VoIP restriction in their regions. To make calls, you can use the Ringout feature, for more information go to Using RingOut from your RingCentral Online Account
Visual notification when VoIP calling is unavailable:
1. When I am in those countries which VoIP calls are restricted, can I still receive faxes and text messages?
Yes. You can still receive and send fax and text messages. You can also use RingOut feature to make outbound calls within those countries.
2. Which countries block VoIP calls?
Currently Cuba, Iran, North Korea, Syria, Sudan and Crimea are the countries/regions that block VoIP calls.