> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.ecall-messaging.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Fax settings

# Fax settings

Under fax settings you can define the following characteristics:

* sender number
* header content
* retries (number of trials/interval)
* cover sheet

### Own fax number
This number will only appear on a fax machine as the sender and will not appear on the sent fax. A maximum of 16 digits, e.g. 0041431234567, are allowed.

### Fax header ID
The content of this field is displayed in the header next to the date and time (maximum 20 digits or characters).

### Fax header info
The content of this field is displayed in the header next to the fax header ID (maximum of 50 digits or characters).

### Retries
The number of retries can be entered here (max. 9). If the recipient is not available eCall tries to achieve the specified number of times.

### Time interval
The interval of retries can be entered here (max. 99 minutes). The interval determines the time required to wait between retry attempts.

### Cover sheet
Here you can specify whether a cover sheet is used or not. If the option is not selected only the attachments are sent as a fax.

### Additional commands (parameters)
Here additional commands can be entered completely free. [Overview of additional commands (parameters)](https://help.ecall-messaging.com/en/article/additional-commands-1eb2s2f/)