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 504: The number you dialed is (not available/not online) currently, please try again later., this means that there is a server error with the phone number that you have dialed.

Try to call again later.