Ricoh D3D9 Field Service Manual page 116

4.Service Tables
5 Modem rate used for the next
page after receiving a negative
code (RTN or PIN)
0: No change 1: Fallback
6 Not used
7 Select detection of reverse
polarity in ringing
0: Off
1: On
G3-2 Switch 04 (SP No. 1-106-005)
No Function
0- Training error
3 detection threshold
4- Not used
7
G3-2 Switch 05 (SP No. 1-106-006)
No Function
0- Initial TX modem rate (kbps)
3
Bit 3 Bit Bit
2 1
0 0 0
0 0 1
0 0 1
0 1 0
0 1 0
0 1 1
112
Ntransmit = Number of transmitted frames
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
1: Detection (Japan and Korea 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
Bit 0 kbps
this for specific receivers.
If a modem rate 14.4 kbps or slower is selected, V.8 protocol
1 2.4
should be disabled manually.
0 4.8
Cross reference
1 7.2
V.8 protocol on/off - G3 switch 03, bit 2
0 9.6
1 12.0
0 14.4