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Deciphering the Resulting Status Codes in RightFax

RightFax shows a status message for each fax in Faxutil and Webutil. To learn more about why a fax transmission may have failed, the fax history includes status codes that offer concise information. This Knowledge Base article helps to decipher these Resulting status codes.

Often, with failed faxes, information on the failure can be found in the transmission record for the fax.

Resulting Status Codes

RightFax shows the line status and the fax status for T.30 (PSTN) and T.38 (FOIP) fax transmissions. These status messages can be useful in analyzing fax errors and in helping to determine the nature of a failure (to assist with issue resolution).

However, these status messages, in conjunction with troubleshooting the telephony integration, can be useful in determining the nature of failures. As the success or failure of a fax transmission is entirely dependent on the telephony transport being used, these status messages can help to determine the underlying deficiency in end-to-end communication and can be used effectively to isolate an issue when combined with further troubleshooting and error reporting in the telephony network itself.

Interpreting the Resulting Status Codes

The fax history shows a Resulting fax status code. Both the first and second sets of numbers are gathered by the Brooktrout API to report on the call progress (reflected in the first set of numbers before the semi-colon) and the fax progress (reflected in the second set of numbers after the semi-colon).

A failure to send a fax using the server computer’s telephony integration can be generally classified into one of these two categories.

Call Setup Failures

Call setup failures occur when a call cannot be successfully placed to a dialed number. The first set of numbers can be helpful in determining call setup failures. This is especially true with Analog, Analog DID, BRI, and T1 integrations. For FoIP (either TR1034 ethernet enabled fax boards or SR140 “Boardless” fax boards), the Wireshark Network capture utility is considerably more useful for troubleshooting call setup errors.

First Set of Numbers – Call Progress Status

The first set of numbers represents the RightFax call status and the call line status. The first number is typically zero (“0”) and means that the call was placed. The second number can be found in Table 1 below.

Second Set of Numbers – Fax Progress Status

(This is generally where transmission failures are reflected.)

Transmission errors occur when a call is successfully placed from the fax server to the end point fax device (or from an end point sending device to the fax server), but the overall quality of the connection between the two end points is insufficient to convey the fax data effectively to or from the remote device.

The second set of numbers in the Resulting status code reflects the outcome of the fax transmission. This information does not yield any data about why a fax failed (that is, it does not indicate the specific reason why the communication between the two end points was unsuccessful). However, it does show what happened at the time that the fax failed.

For example, a Resulting status code of “0/339; 4/75” indicates that a DCN message was received from the remote device (a DCN is the signal sent from a t.30 device that states “I’m disconnecting”). This information indicates that the remote side terminated the call, but it does not indicate specifically why the remote side terminated the call. Therefore, since this information does not explain why the remote device terminated the call, it is more useful for identifying a behavior pattern, rather than for explaining the failure of an isolated fax call.

If you are having issues with RightFax Error Codes, or any other RightFax error, please contact us at 1-866-730-1700 or

Table 1: RightFax Call Line Status

RightFax Call Line Status Message in History Status in Faxutil or Webutil
258 Dial Er: no dial tone Error: No Dial Tone
259 Dial Er: no loop current Error: Phoneline Problem
260 Dial Er: local in use Error: Line in Use
301 Normal Busy Error: Busy
302 Normal Busy Error: Busy
303 Fast Busy Error: Busy
304 Recall Dial Tone Error: Phoneline Problem
305 Confirmation tone Error: Unknown Error
306 Pulse Error: Unknown Error
308 Ringing Detected Error: No Answer
309 Double Ringing Detected Error: No Answer
316 Answer (probably human) Error: Human Answered
317 Answered, quiet followed Error: Human Answered
318 Dial tone after dialing Error: Phoneline Problem
324 Silence, no signal or CNG Error: Phoneline Problem
325 Ringing, no answer Error: No Answer
326 Group 2 Fax Machine Error: G2 Fax Machine
327 Special Info Tone Error: Phoneline Problem
328 Dead line (after dialing) Error: Human Answered
329 Vacant tone (invalid phone num?) Error: Phoneline Problem
330 Reorder tone (PBX/Carrier failure) Error: Busy
331 No circuit tone (dead line?) Error: Phoneline Problem
332 CNG fax tone detected Error: Unknown Error
333 Remote off-hook Error: Unknown Error
334 Special CP Error: Unknown Error
339 Answer Tone Detected Success

Table 2: Dialogic Status Types

Call Status Dialogic Call Status Description
0 BT_STATUS_OK Normal return
2 BT_STATUS_ERROR Error return
3 BT_STATUS_ERROR_DIAL Dialing error
5 BT_STATUS_USER_TERMINATED User function caused termination
6 BT_STATUS_TIMEOUT Timeout occurred
7 BT_STATUS_ALERT Alert occurred

Table 3: Dialogic Return Codes from the Dialogic API 6.3

Dialogic Code Value Code Description
BT_STATUS_ERROR 2/0 APIERR_UNCLASSIFIED No further info provided.
BT_STATUS_ERROR 2/1 APIERR_FILEIO File I/O error occurred.
BT_STATUS_ERROR 2/3 APIERR_BOARDCAPABILITY Hardware or firmware does not support capability.
BT_STATUS_ERROR 2/4 APIERR_NOTCONNECTED Channel not in proper state.
BT_STATUS_ERROR 2/5 APIERR_BADPARAMETER Bad parameter value used.
BT_STATUS_ERROR 2/6 APIERR_MEMORY Memory allocation error.
BT_STATUS_ERROR 2/7 APIERR_BADSTATE The channel is not in a required state.
BT_STATUS_ERROR 2/8 APIERR_TOOSOON Dialing was attempted too soon.
BT_STATUS_ERROR 2/10 APIERR_DRV_OPEN_ERROR Driver open call failed, invalid channel or driver not correctly installed.
BT_STATUS_ERROR 2/12 APIERR_VERSION Incompatible driver version.
BT_STATUS_ERROR 2/13 APIERR_INVALID_PORT Invalid port; faxinit probably not run correctly.
BT_STATUS_ERROR 2/14 APIERR_RINGING Ringing during dialing attempt.
BT_STATUS_ERROR 2/15 APIERR_INFOPKT_NESTING Indir infopkt nesting level too deep.
BT_STATUS_ERROR 2/16 APIERR_MAX_TAGS Maximum number of TIFF tags exceeded.
BT_STATUS_ERROR 2/17 APIERR_LOCK_FAILED An attempt to gain a lock failed.
BT_STATUS_ERROR 2/18 APIERR_INSUFF_BUFFER Buffer size too small to receive data.
BT_STATUS_ERROR 2/19 APIERR_INVALID_DEST_ADDR Destination address not found or invalid.
BT_STATUS_ERROR 2/20 APIERR_PACKET_CREATION Packet or command creation error.
BT_STATUS_ERROR 2/21 APIERR_PACKET_PARSE Packet or command parse error.
BT_STATUS_ERROR 2/24 APIERR_DATA DATA encountered during command processing.
BT_STATUS_ERROR 2/25 APIERR_INVAL_BOARD_PARAM Invalid parameter values received from firmware.
BT_STATUS_ERROR 2/29 APIERR_ASYNC_LP_ERR Async_lp value error.
This blog is tagged as: Error | Failures | FaxUtil | Numbers | Results | RightFax | Status Codes | WebUtil

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