International Calling from my Brenau Vonage account
International calling is available. To place an international call from your U.S. phone number. Dial 011 + Country Code + Area Code + Phone Number.
International calls are billed on a per minute basis. Go here to find out the rate your the country you are calling: https://www.vonage.com/business/international-rates/
You can read more about this feature here.