Concepts
Fax
Definition
A Fax is a document that you want to send to one or more recipients using the Fax.Plus system. Faxes can be in various formats such as PDF, Word, Excel, and other common file types.Key Concepts
Sending a Fax
When sending a fax, you typically need to provide:- The recipient’s fax number(s)
- The document(s) you want to send
- Any additional options (e.g., cover page, scheduling)
Receiving a Fax
Fax.Plus can also receive faxes on your behalf. Received faxes are typically stored in your account and can be accessed through the API or web interface.File Formats
Fax.Plus supports a wide range of file formats, including:- Documents: DOC, DOCX, PDF, TXT, RTF
- Images: JPG, PNG, TIFF
- Spreadsheets: XLS, XLSX
You can upload up to 10 different files per fax, regardless of the number of pages in each file. The maximum total file size is 30 MB.
Fax Status
After sending a fax, you can track its status. The status indicates whether the fax was successfully sent, is still in progress, or encountered an error. You can use webhooks to receive real-time updates on fax transmission status.Fax Error Statuses
Fax.Plus uses a variety of error status codes to indicate the current state of a fax. Here are the possible statuses and their meanings:| Status | Description |
|---|---|
| success | The fax was successfully sent. |
| partially_sent | The first pages were transmitted, but the call dropped due to connection issues. |
| partially_received | The first pages were received, but the call dropped due to connection issues. |
| in_progress | The fax is currently being received ; you can retrieve some pages via the API, or wait for the final status. |
| insufficient_credit | Not enough credit to send or receive pages. Add credit or wait for plan reset. |
| failed | Generic error. Retry, and contact support if the issue persists. |
| failed_internal_process_error | Generic error. Retry, and contact support if the issue persists. |
| failed_user_busy | The destination was busy. Wait and retry. |
| failed_no_answer | No answer at the destination. Retry when you know the recipient is available. |
| failed_unallocated_number | Invalid number. Check the number, including country and area codes. |
| failed_office_converter_issue | Failed to convert Microsoft Office document. Recreate and resubmit the file. |
| failed_separate_file_pages_issue | File conversion issue. Check if all pages in the source file(s) are valid. |
| failed_render_header_issue | File conversion issue. Check if all pages in the source file(s) are valid. |
| failed_invalid_number_format | Invalid number format. Check the number, including country and area codes. |
| failed_mimetype_not_supported | Unsupported file type. |
| failed_destination_not_supported | Number is a special service number or not supported by your plan. |
| failed_image_preparation | File conversion issue. Check if all pages in the source file(s) are valid. |
| failed_to_send | System was busy. Try again later. |
| failed_normal_temporary_failure | Temporary network issue. Retry immediately. |
| failed_unknown_converter_issue | File conversion failed. Check if the file is password-protected. |
| failed_normal_clearing | Destination was busy. Wait and retry. |
| failed_convert_to_tiff_issue | File conversion issue. Check if all pages in the source file(s) are valid. |
| failed_fs_2 / failed_fs_3 | The call was established, but there was no fax machine responding to the call. Check the number and retry. |
| failed_fs_48 | Remote fax machine disconnected after the same message was sent multiple times unsuccessfully. Some pages may have been transmitted. |
| failed_fs_49 | Remote fax machine disconnected unexpectedly. Some pages may have been transmitted. |
Best Practices
- File Preparation: Ensure your files are not corrupted or password-protected before sending.
- Number Verification: Double-check fax numbers, including country and area codes.
- Retry Strategy: For temporary failures, implement a retry mechanism with appropriate intervals.
Schema
The schema is of type object.