Ricoh D117 - Page 1192

NCU Parameters
SM 135 D649
Fax Option
Type C305
(D649)
Address Function Unit Remarks
6805E4
Bit 1 sets the level
of the call signal, Bit
3 sets the call
signal impedance
Bit 1
0 R T=0 (Low)
-
1 R T=1 (High)
Bit 3
0 RZ=0 (High)
1
RZ=1
(Composite)
6805E5
Bit 0 sets the ring
detection method,
Bit 1 sets the ring
detection method
when fixed.
Bit 0
0 Auto
If any setting is changed,
select a setting that is
higher than the default
setting.
1 Fixed
Bit 1
0 Us e RDTP
1 Us e RDTN
Here is a summary of the voltages for the
detection of off-hook for DP detection.
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