Note: The error code is the last 3 digits of the code you see in the error notification. For example, if you see the error notification Call failed (code: 2202404), the error code is 404.

If you are receiving Zoom Phone error 500: The call number is not available currently, please check call number and try again later., this means that server issues might be preventing your call from getting through.

Check if the number that you have dialed is correct. If you are dialing an international number, make sure to include the country code, area code, and phone number. If the issue persists, try to call again later.