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EasyLink Fax Delivery Process & Error Codes

EasyLink Services processes and successfully delivers millions of fax messages per month. Our fax delivery service is monitored 24x7, and capacity is maintained in excess of peak demand. To facilitate successful deliveries, the EasyLink fax service incorporates sophisticated message processing algorithms that automatically re-try initially failed delivery attempts. This system interprets the destination condition being experienced, and performs a specific number of attempts over a pre-determined time period. If all attempts fail, a non-delivery notice containing the error condition is then returned to the originator so that they may decide to either re-attempt delivery, or correct the destination fax number that was submitted.

The most common cause of fax delivery failures are "Ring No Answer," and "Busy" conditions. For these, EasyLink has increased both its number of attempts, and the period of time that they are re-tried.

In the table below, "Retries" references the number of attempts that will be made in five (5) minute intervals. The "IMS Error String" is the text that is returned after the final attempt is un-successful, and is contained in the cancellation notice.

 

# Retries IMS Error String Cause User Action
3 FAX DELIVERY ERROR (072) System Error, report to EasyLink System Error, call ELS
3 FAX DELIVERY ERROR (300) System Error, report to EasyLink System Error, call ELS
3 FAX DELIVERY ERROR (301) System Error, report to EasyLink System Error, call ELS
3 FAX DELIVERY ERROR (830) System Error, report to EasyLink System Error, call ELS
3 FAX DELIVERY ERROR (933) System Error, report to EasyLink System Error, call ELS
3 FAX DELIVERY ERROR (998) System Error, report to EasyLink System Error, call ELS
3 FAX DELIVERY ERROR (999) System Error, report to EasyLink System Error, call ELS
3 POSSIBLE DATA MODEM (220) Answer tone was not a FAX terminal, possible data modem. Not a Fax, Validate #
3 FAX DELIVERY ERROR (233) Fax terminal initiates disconnect. Unable to receive "fine-mode" transmission. Fine Mode error
3 DEST NOT A FAX TERMINAL (936) No Fax / Answer tone. Likely voice response. Voice Ans, Validate #
3 NO FAX ANSWER TONE (912) No Fax / Answer tone. Likely voice response. Voice Ans, Validate #
12 DEST FAX CONTINUALLY BUSY (931) Fax Terminal / Number continually Busy. Busy,12 retries, Call ELS
12 DEST FAX CONTINUALLY BUSY (932) Fax number returns Fast-Busy. Bad number dialed, or Telecom Network congestion. Fast-Busy, Call ELS
4 RING NO ANSWER (935) Ring no answer. Ring No Ans, Validate #
3 DEST NOT A FAX TERMINAL (937) No Fax / Answer tone. Likely bad connection / number. Bad connection, check #
3 DEST NOT A FAX TERMINAL (938) No Fax / Answer tone. Likely bad connection / number. Bad connection, check #
3 DISCONNECT RECEIVED (230) Fax terminal initiates disconnect while attempting to negotiate transmission characteristics. May be caused by line noise. Xmit error, Call ELS
3 FAX DELIVERY ERROR (223) Fax terminal disconnected call in progress. May be out of paper or memory. Xmit error, Call ELS
3 FAX DELIVERY ERROR (224) Fax terminal did not acknowledge page received, ELS disconnects. Xmit error, Call ELS
3 FAX DELIVERY ERROR (225) Fax terminal sent unrecognized response to a page break command, ELS disconnects. Xmit error, Call ELS
3 FAX DELIVERY ERROR (231) ELS initiates disconnect while attempting to negotiate transmission characteristics. May be caused by line noise or failure of Fax terminal to respond. Xmit error, Call ELS
3 FAX DELIVERY ERROR (268) Fax terminal initiates disconnect. Likely out of paper or memory. Line noise could also cause this error. Xmit error, Call ELS