Ricoh D065 Service Manual page 1158

Address
Voltage setting to detect
off-hook for voltage/DP
detection for an externally
connected line.
Here is a summary of the fixed voltage settings (1:
Fixed) for an externally connected line.
Bit 7 Bit 6
6805E3
0
0
0
1
1
Bit 1 sets the level of
the call signal, Bit 3
6805E4
sets the call signal
impedance
6805E5 Bit 0 sets the ring
detection method,
Bit 1 sets the ring
detection method
SM
Function
0: Auto
1: Fixed V
Bit 5 Bit 4
0 0 0
0 0 1
0 1 0
0 0 0
1 1 1
0
Bit 1
1
0
Bit 3
1
0
Bit 0
1
Bit 1 0
145
Unit
changed to 30 s.
Change this bit to "1" if
communication errors
occur frequently during
V.17 reception.
Do not change these
settings
Not used
2.75 V
5.5 V
22 V
41.25 V
RT=0 (Low)
RT=1 (High
RZ=0 (High)
RZ=1
(Composite)
RT=0 (Low) If any setting is
changed, select a
RT=1 (High
setting that is higher
than the default setting.
Use RDTP
NCU Parameters
Remarks
D418