Ricoh B230 Service Manual page 1052

NCU Parameters
Address
PABX: 2100 Hz tone transmission
6805B9
level
Modem turn-on level (incoming
6805BD
signal detection level)
6805BE
to Not used
6805C6
Bits 0 to 3 – Not used
6805C7 Bit 4 = V.34 protocol dump 0: Simple, 1: Detailed (default)
Bits 5 to 7 – Not used.
6805C8
to Not used
6805D9
6805DA T.30 T1 timer
6805E0 Maximum wait time for post
bit 3 message
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
6805E3
0
0
0
1
1
Bit 1 sets the level of
the call signal, Bit 3
6805E4
sets the call signal
impedance
B786
Function
Bit 6 Bit 5 Bit 4
0 0 0
0 0 1
0 1 0
0 0 0
1 1 1
Bit 1
Bit 3
Unit
- N 6805B7 - 0.5N 6805B9 (dB)
-37-0.5N
(dBm)
-
-
1 s
0: 12 s
1: 30 s
0: Auto
1: Fixed V
-
Not used
2.75 V
5.5 V
22 V
41.25 V
0 RT=0 (Low)
1 RT=1 (High)
0 RZ=0 (High)
1 RZ=1
102
Remarks
Do not change the
settings.
Do not change the
settings.
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.
Do not change these
settings
0：，1：
SM