Multitech MULTI MODEM II MT5600BA - Manual (Page 50)

4 AT Commands, S-Registers, and Result Codes
44
MultiModemII User Guide
+MS=? Reports supported options in the format (list of supported mod
values),(list of supported automode values),(list of supported
min_RX_rate values),(list of supported max_RX_rate values),
(list of supported x_law values), (list of supported reserved
values),(list of supported max_TX_rate values).
Example: (0,1,2,3,9,10,11,56,64,69),(0,1),(300-33600),(300-
56000),(0,1),(0,1),(300-33600).
Subparameters
mod A decimal number that specifies the preferred modula-
tion (automode enabled) or the modulation to use in originat-
ing or answering a connection (automode disabled).
<mod>
0
1
2
3
9
10
11
12 2
56 3
64
69
Modulation
V.21
V.22
V.22bis
V.23
V.32
V.32bis
V.34
V.90
K56flex
Bell 103
Bell212
Possible rates (bps) 1
300
1200
2400 or 1200
1200
9600 or 4800
14400, 12000, 9600, 7200, or 4800
33600, 31200, 28800, 26400, 24000, 21600,19200, 16800,
14400, 12000, 9600, 7200, 4800, or 2400
56000, 54667, 53333, 52000, 50667, 49333, 48000, 46667,
45333, 44000, 42667, 41333. 40000, 38667, 37333, 36000,
34667, 33333, 32000, 30667, 29333, or 28000
56000, 54000, 52000, 50000, 48000, 46000, 44000, 42000,
40000, 38000, 36000, 34000, or 32000
300
1200
Notes:
1. See optional <automode>, <min_RX_rate>, <max_RX_rate>, and <max_TX_rate>
subparameters.
2. Selects V.90 modulation as first priority. If a V.90 connection cannot be established,
the modem attempts K56flex, V.34, V.32bis, etc. (Default.)
3. Selects K56flex modulation as first priority. If a K56flex connection cannot be
established, the modem attempts V.90, V.34, V.32bis, etc.
automode An optional numeric value that enables or disables
automatic modulation negotiation using V.8 bis/V.8 or V.32
bis Annex A. The options are:
0 = Disable automode
1 = Enable automode (default)
min_RX_rate An optional number that specifies the lowest
rate at which the modem may establish a receive connection.
The value is decimal coded in units of bps, e.g., 2400 specifies
the lowest rate to be 2400 bps. See “Possible rates” in the mod
table. The default is 300 for 300 bps.
max_RX_rate An optional number that specifies the highest
rate at which the modem may establish a receive connection.
The value is decimal coded in units of bps, e.g., 28800 specifies
the highest rate to be 28800 bps. See “Possible rates” in the mod
table. The default is 56000, for 56000 bps.