NEC 750C - Manual (Page 70)

Modem Commands A-4
AT Commands (cont’d)
Command Description Default
\N1 Select normal mode connection
\N2 Select LAPM and MNP connection
\N3 Select LAPM, MNP and normal mode
connection X
\N4 Select only LAPM connection
\N5 Select only MNP connection
\V0 Disable extended result code
\V1 Enable extended result code
%C0 Disable data compression
%C1 Enable MNP 5 data compression
negotiation
%C2 Enable V.42 bis data compression
%C3 Enable both V.42 bis and MNP5 data
compression X
+MS Select modulation (see the next table for
values)
The command format is:
+MS=<mod>,<automode>,<min_rate>,<m
ax_rate>
Modulation Values
<mod> Modulation Possible Rate
0 V.21 300
1 V.22 1200
2 V.22 bis 2400, 1200
9 V.32 9600, 4800
10 V.32 bis 14400, 12000, 9600, 7200, 4800
11 V.34 336000,31200, 28800, 26400, 24000,
21400, 19200, 16800, 14400, 12000,
9600, 7200, 4800, 2400
<automode>
0 Disables automatic modulation negotiation
1 Enables automatic modulation negotiation using V.8
bis/V.8 or V.32 bis Annex A.