Ricoh D127 Service Manual page 497

Communication Switch 1C [SP No. 1-104-029]
No FUNCTION
Extension access code (8 and
9) to turn V.8 protocol On/Off
0-1
0: On
1: Off
2-7 Not used
Communication Switch 1D - Not used (do not change the settings)
Communication Switch 1E - Not used (do not change the settings)
Communication Switch 1F - Not used (do not change the settings)
SM Appendix
COMMENTS
Refer to communication switch 1B.
Example: If "8" is the PSTN access code, set bit 0
to 1. When the machine detects "8" as the first
dialed number, it automatically disables V.8
protocol. (If "9" is the PSTN access code, use bit
1.)
Do not change the settings.
5-45
Bit Switches
D127/D128