Full Mode TX Timeout
You can set the time before sending operations automatically terminate if a notification e-mail message (MDN) is not received from the recipient when sending an I-fax in the Full Mode.
1.
Press 
(Settings/Registration).
(Settings/Registration).2.
Press [Function Settings] → [Send] → [E-Mail/I-Fax Settings].
3.
Press [Full Mode TX Timeout].
4.
Specify the time by pressing [-] or [+] → press [OK].