Ricoh Type M12 Field Service Manual page 144

4. Service Tables
Alarm when the handset is off-
hook at the end of communication
1
0: Disabled
1: Enabled
2-3 Not used
Sidaa manual calibration setting
4 0: Off
1: On
5-7 Not used
142
If the customer wants to hear an alarm if the handset is
off-hook at the end of fax communication, change this
bit to "1".
Do not change these settings.
1: manually calibrates for communication with a line
whose current change occurs such as an optical fiber
line.
Do not change the settings.