Error Codes

You may occasionally experience a problem when receiving a fax. The delivery report will give an error code and a URL which references one of the errors listed on this page. Many of the errors should never happen, and if they do we would like to know about them.

If the error code you see is not Normal and proper end of connection, which is not really an error but a status message saying that all went well, then the sender's Fax machine will also have reported an error and they will normally try again.

1001-1099: INTERNAL SERVER ERROR CODES

This group of codes are the most common you are likely to see. They fall into two general groups Error (1001 - 1002) and EOF (1011 - 1016).

The first, Error, means that there has been some sort of error while communicating with the network modem server, and might be seen if there is a failure of the network modem server or network during a transaction. These types of error code indicate a fault of some kind at the Demon end of the connection.

The second, EOF, which stands for End Of File, means that the telephone connection between the sender and Demon has been terminated too early. This could have a number of causes such as the senders Fax machine being jammed or the phone lines between the sender and Demon's modems being cut off. These types of error code usual indicate a fault either at the senders end or in the telephony network between the sender and Demon's equipment.

1001: Error During Start of Page Receipt Sending DC2

When the software at Demon's end is ready to start receiving a page it sends a code called DC2 to the modem. This error indicates that the software encountered an error sending this code.

1002: Error During Page Receipt

This error code indicates that the software encountered an error while receiving a page from the sender.

1011: EOF During Start of Page Receipt Sending DC2

When the software at Demon's end is ready to start receiving a page it sends a code called DC2 to the modem. This error code indicates that the software encountered a dropped connection while trying to send this code.

1012: EOF During Page Receipt

1013: EOF During Chat Send

1014: EOF During Chat Expect

0-9: CALL PLACEMENT AND TERMINATION

0: Normal and proper end of connection

This is not really an error code, but a progress report saying that all went well.

1: Ring Detect without successful handshake

2: Call aborted, from +FK or AN

3: No Loop Current

4: Ringback detected, no answer (timeout)

5: Ringback detected, answer without CED

10-19: TRANSMIT PHASE A & MISCELLANEOUS ERRORS

10: Unspecified Phase A error

11: No Answer (T.30 T1 timeout)

20-39: TRANSMIT PHASE B HANGUP CODES

20: Unspecified Transmit Phase B error

21: Remote cannot receive or send

22: COMREC error in transmit Phase B

23: COMREC invalid command received

24: RSPEC error

25: DCS sent three times without response

26: DIS/DTC received 3 times; DCS not recognized

27: Failure to train at 2400 bps or +FMINSP value

28: RSPREC invalid response received

40-49: TRANSMIT PHASE C HANGUP CODES

40: Unspecified Transmit Phase C error

41: Unspecified Image format error

42: Image conversion error

43: DTE to DCE data underflow

44: Unrecognized Transparent data command

45: Image error, line length wrong

46: Image error, page length wrong

47: Image error, wrong compression code

50-69: TRANSMIT PHASE D HANGUP CODES

50: Unspecified Transmit Phase D error

51: RSPREC error

52: No response to MPS repeated 3 times

53: Invalid response to MPS

54: No response to EOP repeated 3 times

55: Invalid response to EOM

56: No response to EOM repeated 3 times

57: Invalid response to EOM

58: Unable to continue after PIN or PIP

70-89: RECEIVE PHASE B HANGUP CODES

70: Unspecified Receive Phase B error

71: RSPREC error

72: COMREC error

73: T.30 T2 timeout, expected page not received

74: T.30 T1 timeout after EOM received

90-99: RECEIVE PHASE C HANGUP CODES

90: Unspecified Receive Phase C error

91: Missing EOL after 5 seconds

92: Bad CRC or frame (ECM mode)

93: DCE to DTE buffer overflow

94: Bad CRC or frame (ECM or BFT modes)

100-119: RECEIVE PHASE D HANGUP CODES

100: Unspecified Receive Phase D errors

101: RSPREC invalid response received

102: COMREC invalid response received

103: Unable to continue after PIN or PIP

120-255: RESERVED CODES

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