International Calling - Universal International Freephone Numbers (UIFN) Support
Universal International Freephone Numbers (UIFN) is a worldwide toll-free 800-number issued by the International Telecommunication Union (ITU). Like the 800-area code issued in the U.S. and Canada, and 0800 in other countries, the call is free for the caller and the receiver pays the charges.
Currently, RingCentral does NOT support calling to 00800 Universal International Freephone Numbers (UIFN).
• Calls to 00800 number is not successful or completed.
• A 404 not found error appears when sent an invite.
• Calls should go through if supported by outbound carrier.
RingCentral is currently investigating potential solutions to this issue.