Ricoh C2000 Service Manual page 81

4. Service Tables
Modem rate used for the next page
after receiving a negative code
5
(RTN or PIN)
0: No change 1: Fallback
6 Not Used
4
Select detection of reverse polarity
in ringing
7
0: Off
1: On
G3 Switch 04 [SP No. 1-105-005]
No
0-3 Training error detection threshold
4-7 Not used
G3 Switch 05 [SP No. 1-105-006]
No FUNCTION
Initial Tx modem rate
Bit 3 Bit 2
0
0-3
0
0
80
Function
Bit 1 Bit 0 bps
0 0 1 2.4k
0 1 0 4.8k
0 1 1 7.2k
NResend- Number of frames to be retransmitted
1: When using ECM, the machine sends a CTC to drop
back the modem rate after receiving four PPRs.
PPR, CTC: These are ECM protocol signals.
This bit is not effective in V.34 communications.
1: The machine's tx modem rate will fall back before
sending the next page if a negative code is received. This
bit is ignored if ECM is being used.
Do not change the settings
This switch is used to prevent reverse polarity in ringing on
the phone line (applied to PSTN-G3 ringing). Do not
change this setting
0: No detection → Outside Japan
1: Detection → Inside Japan only
Comments
0 - F (Hex); 0 - 15 bits
If the number of error bits in the received TCF is below this
threshold, the machine informs the sender that training has
succeeded.
Do not change the settings.
COMMENTS
These bits set the initial starting modem rate for
transmission.
Use the dedicated transmission parameters if you need
to change this for specific receivers.
If a modem rate 14.4 kbps or slower is selected, V.8
protocol should be disabled manually.
Cross reference