Multi-Tech Systems MT5634ZBA - Manual (Page 26)

Chapter 4 - AT Commands, S-Registers, Result Codes
26
MultiModemDID User Guide
Command: +MS= Modulation Selection
Values: See description.
Defaults: See description.
Description: This extended-format command selects modulation, enables or
disables automode, and specifies the highest downstream and
upstream connection rates using one to four subparameters.
The command syntax is
+MS=[
mod][,[automode][,[0][,[max_rate][,[0][,[max_rx_rate]]]]]]<CR>
Subparameters that are not entered retain their current value.
Commas separate optional subparameters and must be
inserted to skip a subparameter. Example: +MS=,0<CR>
disables automode and keeps other settings at current values.
+MS=? Reports supported options in the format (list of supported mod
values),(list of supported automode values),(0),(list of
supported max_rate values),(0),(list of supported max_rx_rate
values). Example: +MS: (BELL103, V21, BELL212A, V22,
V22B, V23C, V32, V32B, V34, V90, V92), (0, 1), (0), (0-33600),
(0), (0-56000)
+MS? Reports current options in the format mod, automode, 0,
max_rate, 0, max_rx_rate. Example: +MS: V92, 1, 0, 31200, 0,
56000.
Subparameters
mod Specifies the preferred modulation (automode enabled) or the
modulation to use in originating or answering a connection
(automode disabled). The default is V92.
mod Modulation Possible rates (bps) 1
V92 2 V.92 56000, 54666, 53333, 52000, 50666, 49333,
48000, 46666, 45333, 44000, 42666, 41333.
40000, 38666, 37333, 36000, 34666, 33333,
32000, 30666, 29333, or 28000
V90 3 V.90 56000, 54666, 53333, 52000, 50666, 49333,
48000, 46666, 45333, 44000, 42666, 41333.
40000, 38666, 37333, 36000, 34666, 33333,
32000, 30666, 29333, or 28000
V34 V.34 33600, 31200, 28800, 26400, 24000,
21600,19200, 16800, 14400, 12000, 9600, 7200,
4800, or 2400
V32B V.32bis 14400, 12000, 9600, 7200, or 4800
V32 V.32 9600 or 4800
V22B V.22bis 2400 or 1200
V22 V.22 1200
V23C V.23 1200
V21 V.21 300
Bell212A Bell 212A 1200
Bell103 Bell 103 300
Notes:
1. See optional <automode>, <max_rate>, and <max_RX_rate>
subparameters.
2. Selects V.92 modulation as first priority. If a V.92 connection cannot be
established, the modem attempts V.90, V.34, V.32bis, etc.
3. Selects V.90 modulation as first priority. If a V.90 connection cannot be
established, the modem attempts V.34, V.32bis, etc.