Ricoh MP C305SPF, Field Service Manual, Page: 130 / 146

Address Function Unit Remarks
6805BD
Modem turn-on level (incoming signal
detection level) -37-0.5N
(dBm)
6805BE
to
6805C6
Not used - Do not change the settings.
6805C7
Bits 0 to 3 – Not used
Bit 4 = V.34 protocol dump 0: Simple, 1: Detailed (default)
Bits 5 to 7 – Not used.
6805C8
to
6805D9
Not used - Do not change the settings.
6805DA T.30 T1 timer 1 s
6805E0 bit
3
Maximum wait time for post message
0: 12 s
1: 30 s
1: Maximum wait time for
post message (EOP/EOM/
MPS) can be changed to
30 s.
Change this bit to “1” if
communication errors occur
frequently during V.17
reception.
6805E3
Voltage setting to detect off-hook for
voltage/DP detection for an externally
connected line.
0: Auto
1: Fixed V
Do not change these
settings
Here is a summary of the fixed voltage settings (1:
Fixed) for an externally connected line.
Bit 7 Bit 6 Bit 5 Bit 4 -
0 0 0 0 Not used
0 0 0 1 2.75 V
0 0 1 0 5.5 V
1 0 0 0 22 V
1 1 1 1 41.25 V
4. Service Tables
128