Digicom MTL01 User Manual page 12

MTL01
AT+MS= MODULATION FORMAT
This extended-format command selects the modulation, optionally enables or disable automode, and
optionally specifies the lowest and highest rates using one to four subparameters. the command format is:
# [mod]
# [automode]
# [min_rate]
# [max_rate]
Modulation type (see the table below)
MOD MODULATION
0 V.21
1 V.22
2 V.22bis
3 V.23
9 V.32
10 V.32bis
11 V.34
12 V.90
56 K56Flex
Automode: see the ATN command
Line speed min/max: These parameters permit to define, within a modulation standard, the minimum
and maximum connection rate.
The AT+MS? command shows the currently modem configuration, the default value is: 12,1,300,56000
Some configuration examples
Modem set up with automode enabled and connection speed between 300 bps and 56000 bps:
The modem will connect at the maximum speed available if the interface speed is equal or higher than
the max rate (56.000bps).
If the computer speed is less than the max rate, the modem will connect at the computer speed.
Modem set up in V.34 with automode disabled and speed fixed at 33.600
In this case the modem will connect only if the computer speed is equal or higher than the speed setup in
the AT+MS command.
The modem can handshake from V.32 (9600 bps) to V.21 (300 bps).
Standard Available speeds
V.90 56000, 54667, 53333, 52000, 50667, 49333, 48000, 46667, 45333, 44000, 42667, 41333,
40000, 38667, 37333, 36000, 34667, 33333, 32000, 30667, 29333, 28000
K56Flex 56000, 54000, 52000, 50000, 48000, 46000, 44000, 42000, 40000, 38000, 36000, 34000,
32000
V.34 33600, 31200, 28800, 26400, 24000, 21600, 19200, 16800, 14400, 12000, 9600, 7200,
4800, 2400
V.32bis 14400, 12000, 9600, 7200, 4800
V.32 9600, 4800
V.22bis 2400, 1200
V.22 1200
V.21 300
Bell 103 300
Bell 212 1200
AT%C DATA COMPRESSION CONTROL
%C0 Compression disabled.
%C1 MNP5 enabled only.
%C2 V42bis enabled only.
%C3 MNP5 and V42bis enabled.
AT+MS=[mod],[automode],[min_rate],[max_rate]
= modulation type
= automode enable or disable
= min. line speed
= max.line speed
POSSIBLE RATE bps
300
1200
2400 or 1200
1200
9600 or 4800
from 14400 to 4800
from 33600 to 2400
from 56000 to 28800
from 56000 to 32000
AT+MS=12,1,300,56000
AT+MS=11,0,33600,33600
AT+MS=9,1,300,9600
3.4
Modem AT Command Set