Ricoh M281 Series Service Manual page 902

Bit Switches - 1
I/O rate
System Switch 01 - Not used (Do not change the factory settings.)
No Function
0-1 Not used
2 Forced reset after transmission
stalls
0: Off
1: On
3 Not used
4 File retention time
0: Depends on User Parameter
24 [18(H)]
1: No limit
5-7 -
System Switch 03 - Not used (Do not change the factory settings.)
No Function
0-2 Not used
D255/D256 FAX OPTION
0: 0 ms/line
5: 5 ms/line
10: 10 ms/line
20: 20 ms/line
25: 2.5 ms/line
40: 40 ms/line

"40" is displayed while receiving a fax message using AI
short protocol.
System Switch 02 (SP No. 1-101-003)
Do not change these settings.
With this setting on, the machine resets itself
automatically if a transmission stalls and fails to
complete the job.
Do not change these settings.
1: A file that had a communication error will not
be erased unless the communication is
successful.
Do not change this setting
System Switch 04 (SP No. 1-101-005)
Do not change these settings.
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