Ricoh D649 Field Service Manual page 130

4. Service Tables
Address
Modem turn-on level (incoming signal
6805BD
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 bit
Maximum wait time for post message
3
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
128
Function
Bit 6 Bit 5 Bit 4
0 0 0
0 0 1
0 1 0
0 0 0
1 1 1
Unit
-37-0.5N
(dBm)
- Do not change the settings.
- Do not change the settings.
1 s
1: Maximum wait time for
post message (EOP/EOM/
MPS) can be changed to
0: 12 s 30 s.
1: 30 s Change this bit to "1" if
communication errors occur
frequently during V.17
reception.
0: Auto
1: Fixed V
-
Do not change these
settings
Not used
2.75 V
5.5 V
22 V
41.25 V
Remarks