Bit Switches
SM 103 D346
Fax Option
Type 5000
D346
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
Not used
Do not change the settings.
G3-2 Switch 04 [SP No. 1-106-005]
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.
G3-2 Switch 05 [SP No. 1-106-006]
No FUNCTION COMMENTS
Initial Tx modem rate
Bit 3 Bit 2 Bit 1 Bit 0 bps
0 0 0 1 2.4k
0 0 1 0 4.8k
0 0 1 1 7.2k
0 1 0 0 9.6k
0-3
0 1 0 1 12.0k
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, bit2
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