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Frequently Asked Questions

SIP 404 - Not found.

SIP 404 - Not found. error means that the server could not find the extension (or number) you have dialed through the softphone.


This is usually due to either:

  • a wrong prefix (try adding or removing the international prefix or use + instead of 00 or vice versa);
  • or the number does not exist.


We suggest that you contact your VoIP service provider and ask them why you are seeing this error message.