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 error 439: Your service is affected by a network issue. Please check your network and try again later., this means that network issues might be preventing your call from getting through.

Contact your Zoom Phone admin for help. You may need to change your network firewall or proxy server settings.