Ricoh FACSIMILE FAX77 Field Service Manual page 89

Bit Switch F
BIT FUNCTION
5 Not used
PSTN access method through PABX
6 Bit 7 Bit 6 Setting
0 0 No PABX
7 0 1 Loop start
1 0 Ground start
1 1 Flash start
DATA
Do not change the factory setting.
Set these bits to match the type of signals accepted by the
PABX.
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COMMENTS