Ricoh MP C407

4.Service Tables
86
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.
5 Modem rate used for the next
page after receiving a negative
code (RTN or PIN)
0: No change 1: Fallback
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.
6 Not used Do not change the settings
7 Select detection of reverse
polarity in ringing
0: Off
1: On
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
1: Detection (Japan and Korea only)
G3 Switch 04 (SP No. 1-105-005)
No Function Comments
0-
3
Training error
detection threshold
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.
4-
7
Not used Do not change the settings.
G3 Switch 05 (SP No. 1-105-006)
No Function Comments
0-
3
Initial Tx modem rate (kbps) 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
V.8 protocol on/off - G3 switch 03, bit 2
Bit 3 Bit
2
Bit
1
Bit 0 kbps
0 0 0 1 2.4
0 0 1 0 4.8
0 0 1 1 7.2
0 1 0 0 9.6
0 1 0 1 12.0
0 1 1 0 14.4
0 1 1 1 16.8
1 0 0 0 19.2
1 0 0 1 21.6