When registering a recipient to the contacts list, you can also add the line setting.
Enter the printer's IP address into a browser to access Web Config.
Enter the printer's IP address from a computer that is connected to the same network as the printer.
You can check the IP address of the printer from the following menu.
Settings > General Settings > Network Settings > (Standard) > Network Status > Wired LAN/Wi-Fi Status
Enter the administrator password to log in as an administrator.
Select in the following order.
Scan/Copy tab or the Fax tab > Contacts
Select the number that you want to register, and then click Edit.
Enter the Name and Index Word.
Select Fax as the Type option.
You cannot change the Type option after registration is complete. If you want to change the type, delete the destination and then register again.
Select a line in Select Line, and then click Apply.
Note that Select Line is set to G3-Auto by default.
You can also add the recipient to the contacts list.