Sindoh M403 - Manual (Page 38)

Preparation for Using the Device
1-
10
Button Function
【A3/11 x 17 START】 Press the 【A3/11 x 17 START】 button to copy or fax 11 x 17
paper according to the current function. By default, while the
device is [Ready], press the 【A3/11 x 17 START】 button to copy
11 x 17 paper.
【FAX】 Press the 【FAX】 to change fax settings. Changed settings
are applied only to the selected job. To maintain the changed
setting, press the 【MENU】 button, change the default setting
and then save it.
【SPEED DIAL】 Use this button to speed dial the receiver when sending a [FAX].
【ON-HOOK】 Use this button to go to the [On-Hook] mode when making a
call to the receiver to send a [FAX].