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4 – Appendices NET SatisFAXtion 8.6 Manual 188
a shorter no-answer timeout than IPFax, and so terminates the call. (See
dial_wait ; this is normally 45 seconds.) Error type: NON_RETRYABLE .
28504 488 Not acceptable here: The gateway does not support either
the G.711 µ-law or T.38 codec, or has rejected the call for some other reason.
Error type:
NON_RETRYABLE .
28507 491 Request pending. Error type: NON_RETRYABLE .
28509 493 Undecipherable. Error type: NON_RETRYABLE .
4.1.9
28672–28685: SIP 500 Messages
These are error codes returned by the media gateway or fax service. The second
number listed is the equivalent standard SIP code. Error type:
NON_RETRYABLE .
28672 500 Ser ver Internal Error: The gateway encountered an
unexpected condition that prevented it from fulfilling the request. Error type:
NON_RETRYABLE .
28673 501 Not implemented. Error type: NON_RETRYABLE .
28674 502 Bad gateway. Error type: NON_RETRYABLE .
28675 503 Service Unavailable: The gateway rejected the initial INVITE
with a generic “503 Service unavailable.” This could be due to lack of system
resources, overload, or administrative maintenance. Error type:
BUSY .
28676 504 Ser ver time-out. Error type: NON_RETRYABLE .
28677 505 Version not suppor ted. Error type: NON_RETRYABLE .
28685 513 Message too large. Error type: NON_RETRYABLE .
4.1.10
28928–28934: SIP 600 Messages
600 class errors are fatal errors returned by the SIP gateway or fax service. The
second number listed is the equivalent standard SIP code. Error type:
NON_RETRYABLE .
28928 600 Busy Ever ywhere. Error type: BUSY .
28931 603 Decline. Error type: NON_RETRYABLE .
28932 604 Does Not Exist Anywhere. Error type: NON_RETRYABLE .
28934 606 Not acceptable. Error type: NON_RETRYABLE .
4.1.11
29185–29311: Q.850 Cause Codes
These are error codes returned by the ISDN PRI circuit. For more information on
Q.850 cause codes, please see ITU-T publication Q.850, all “Q.850
descriptions” provided below come from that document. All cause codes
originate from the TDM network and are passed through the gateway to IPFax.
4.1.11.1 Normal Class
29185 Cause 1, Unallocated (unassigned) number: The TDM network
could not connect the call because the number is not in service. Error type:
NON_RETRYABLE .