Bit Switches
D127/D128 5-50 SM Appendix
G3 Switch 05 [SP No. 1-105-006]
No FUNCTION COMMENTS
0-3
Initial Tx modem rate
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
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 1 0 1 12.0k
0 1 1 0 14.4k
0 1 1 1 16.8k
1 0 0 0 19.2k
1 0 0 1 21.6k
1 0 1 0 24.0k
1 0 1 1 26.4k
1 1 0 0 28.8k
1 1 0 1 31.2k
1 1 1 0 33.6k
Other settings - Not used
4-5
Initial modem type for 9.6 k or
7.2 kbps.
Bit 5: 0, Bit 4: 0 = V.29
Bit 5: 0, Bit 4: 1 = V.17
Bit 5: 1, Bit 4: 0 = V.34
Bit 5: 1, Bit 4: 1 = Reserved
These bits set the initial modem type for 9.6 and
7.2 kbps, if the initial modem rate is set at these
speeds.
6-7 Not used Do not change the settings.
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