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MaxoTel

Error Code 5xx

If you hear a coded error message, it is usually due to an internal error and it should be reported to our support team as soon as possible.

However, there are a couple of common ones that are encountered regularly:

503 - No Plan selected.
512 - The person you are calling has their VoIP phone switched off, or it is unreachable.
513 - Upstream carrier congestion (or disconnected phone number).
514 - The phone number you have dialed doesn't exist.

522 - You're currently using your maximum number of lines. Contact us if you need to upgrade your plan.
508 - [Anonymous SIP] If you get this error, your phone may not be authenticated with our servers.

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