3-87
Unique Switch 030 — Modem
Switch
Initial
Setting
Adjust Usage/Comments
7 0 Factory use only
6 0 Factory use only
5 1 3429 baud symbol rate when
communicating at V.34
0: No
1: Yes
If the error frame often occurs because of the
symbol rate is too high, setting this switch to
“1” mask that symbol rate and keep down the
occurrence of error frame.
4 1 3200 baud symbol rate when
communicating at V.34
0: No
1: Yes
3 1 3000 baud symbol rate when
communicating at V.34
0: No
1: Yes
2 1 2800 baud symbol rate when
communicating at V.34
0: No
1: Yes
1 0 Factory use only
0 1 2400 baud symbol rate when
communicating at V.34
0: No
1: Yes
See above (switch 5 to 2).
Unique Switch 031 — Modem
Switch
Initial
Setting
Adjust Usage/Comments
7 0 Forced 2400 symbol rate
when probing SNR is adverse
SNR means that Signal Noise Ratio.
If the SNR is less than the threshold you set,
the modem overrides the bandwidth evaluation
algorithm and forces the symbol rate to2400 baud.
6 0
5 0
4 1
3 0
2 1
1 0
0 0
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