Call Logs Response Codes

The following table describes the response codes that may appear in call logs:

Code	Reason	Description
402	Payment Required	Destination side does not allow the call due to insufficient balance. Internal SubCustomer or Customer balance is too low.
403	Forbidden	Destination side understands the request but refuses to fulfill it. Internal DID service time has expired.
404	Not Found	Destination side indicates the user does not exist at the domain specified in the Request-URI. This status is also returned if the domain in the Request-URI does not match any domain handled by the recipient.
408	SIP Transaction Timeout or Request Timeout	Destination side cannot produce a response within a specified period, or there is no response from the destination.
410	Gone	The destination number is no longer available.
480	Temporarily Unavailable	Destination is currently unavailable. Internal dedicated/flexible resources are overloaded.
486	Busy Here	The destination is busy.
487	Request Terminated (Cancel)	Origination or Destination side has canceled the call request.
500	Server Error	The server cannot fulfill the request due to an unexpected condition.
503	Service Unavailable	Destination side is unavailable and cannot process the request.
504	Server Timeout	Destination side has attempted to process the request but has not received a prompt response.
603	Decline	The destination is refusing to answer the call.
604	Does Not Exist Anywhere	Destination side indicates the requested user does not exist.