Lexmark CX331
A fax server mode in fax settings is not available or missing.
Going through EWS > Settings > Fax setting > Fax mode > no fax server option.
Check the firmware and make sure that it is updated to FW74 or higher. The fax server is supported in 2.8” panel size devices since FW7.4.
After upgrading the firmware, import the EnableFaxServer.zip configuration file and restart the device.
LEGACY ID: SO9036
Compruebe el tipo de fax disponible para la impresora.
Utilice Embedded Web Server o el asistente de configuración para configurar la impresora de modo que envíe y reciba mensajes de fax analógicos.