Lexmark MX521
A distinctive ring service lets you have multiple telephone numbers on one telephone line. Each telephone number is assigned a different ring pattern.
Note: These instructions apply only to printers that support analog fax. For more information, see Supported fax.
From the home screen, touch Settings > Fax > Fax Setup > Fax Receive Settings > Admin Controls > Answer On.
Select a ring pattern.
Configure you printer fax settings to answer only in response to a specific ringing pattern.
Connecting a computer to the printer using Wi‑Fi Direct is easy. Here are the steps.