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 405: Your request can not be allowed. Please contact your admin., this means that network issues might be preventing your call from getting through.
Contact your Zoom Phone admin for help. Your admin may have removed a calling plan for outbound dialing. You may need to change your network firewall or proxy server settings.