What do the fax error messages mean?
Fax FAQs
The Next Step in Fax Technology
Fax technology has come a long way since Alexander Bain created the electric printing telegraph/magnafax telecopier.
Modern fax machines:
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Are often connected to a telephone network.
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Use a paper copy when sending a fax.
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Scan documents, treating text and images as a single fixed graphic image, which the machine converts into a bitmap.
The word fax (short for facsimile) brings to mind a large machine connected to a telephone line, but this isn’t necessarily always the case. With SimplyCast’s Fax tool, you can send an online fax over long distances without ever touching a fax machine!
When Fax Errors Occur
When a bulk fax is sent unsuccessfully, the receiving machine provides an error code to communicate the reason for failure. This error code (or error message) helps the bulk fax service decide if the number should be retried, delayed, or removed from the sending list.
There is an “Undelivered” section within your reports that will explain why the message was not delivered and include the error code/message.
We've compiled a list of current transmission error codes that you may see during your fax campaigns, as well as a brief explanation for each to give you a better idea of its purpose.
Keep in mind that SimplyCast only charges for successfully delivered pages and will remove any number that has been determined to be permanently unreachable.
Fax Error Codes/Messages
| Connection failed | There was no receiver to connect to on the other end of the call. |
| Document generation error | There was an error while generating the document. This file may have been deleted before sending. |
| Failed to train with any of the compatible modems | A remote fax machine was detected, but the sending and receiving modems could not establish communication. |
| Fax transmission not established | We could not detect a remote machine. This could be due to no fax machine on the receiving end or a lack of call clarity. |
| Log entry lost | The call started, but the log entry was lost or incomplete. This is a rare error that may indicate a system problem. |
| No response after sending a page | The remote machine did not acknowledge receiving a page of the fax. Depending on its behavior, the machine may have printed the page and any preceding pages. |
| Received no response to DCS or TCF | The bulk fax service could not successfully determine the remote machine's capabilities. |
| The call dropped prematurely | The call dropped due to a non-fax transmission error. It is likely that the receiver hung up. |
| The HDLC carrier did not stop in a timely manner | The service initiated a fax transmission with the receiver, but a synchronization (timing) error could not be resolved. |
| Timed out waiting for initial communication | A call was established with the receiver and the bulk fax service attempted to establish a session, but there was no response from the receiving fax machine. This could be due to no machine on the receiving end or a lack of call clarity. |
| Timed out waiting for the first message | A call was established with the receiver, and the service attempted to establish a session, but the receiving fax machine did not respond. This could be due to the lack of a machine on the receiving end or call clarity. |
| Unexpected DCN while waiting for DCS or DIS | The remote machine unexpectedly sent a disconnect message when the service asked for its fax capabilities. |
| Received bad response to DCS or training | An unexpected message was received when the bulk fax service asked for the remote machine's capabilities. |
| Invalid response after sending a page | After successfully sending a page, an unexpected message was received. Depending on the remote machine's behavior, it may have printed the sent page and any preceding pages. |
| Disconnected after permitted retries | The service unsuccessfully attempted to send the same message multiple times. This may be due to a call clarity issue. |
| Far end cannot receive at the resolution of the image | The remote machine does not support receiving faxes of the resolution that our service sends. |
| Received a DCN from remote after sending a page | After a page was successfully sent, the remote machine responded with a disconnect message. Depending on its behavior, the machine may have printed a paper copy of the sent page and any preceding pages. |
| Unexpected message received | Given the current context, the service received a message it did not expect. |
| Received other than DIS while waiting for DIS | The service expected to receive the remote machine's capabilities but received an unexpected message instead. |
| Unexpected DCN after EOM or MPS sequence | The remote machine disconnected unexpectedly after receiving a page of a multipage fax. Depending on its behavior, the machine may have printed a paper copy of the sent page and any preceding pages. |
| Document loading error | The service attempted to generate the message to send, but a document was missing. |
| Invalid ECM response received from receiver | The service received an invalid error correction message from the remote machine. |
| Unexpected DCN after RR/RNR sequence | The remote machine disconnected unexpectedly after indicating it was not ready to initiate a session. |
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