Multitech MultiModem MT5600ZDX User Manual page 39

4 AT Commands, S-Registers, and Result Codes
x_law An optional number that specifies the PCM code type
for 56K modulation. The options are:
0 = µ-Law—used in North America and Japan (default)
1 = A-Law—used outside North America and Japan
The modem automatically selects A-Law or µ-Law if the server
sends the Conexant ID. Note that the ATZ command restores
the x_law value from NVRAM. You can also manually select
A-Law or µ-Law using the %U command.
reserved Must not be changed from the default value of 0.
max_TX_rate An optional number that specifies the highest
rate at which the modem may establish a transmit connection.
The value is decimal coded in units of bps, e.g., 33600 specifies
the highest rate to be 33600 bps. See "Possible rates" in the mod
table. The default is 33600, for 33600 bps.
Command: +++AT<CR> Escape Sequence
Values: n/a
Description: Puts the modem in command mode (and optionally issues a
command) while remaining online. Type +++AT and up to ten
command characters, and then press E
sue the hang-up Command: +++ATH<CR>.
Command: -K n MNP Extended Services
n = 0, 1, or 2
Values:
Default: 0
Enables or disables conversion of a V.42 LAPM connection to
Description:
an MNP 10 connection.
-K0 Disables V.42 LAPM to MNP10 conversion.
<mod> Modulation Possible rates (bps)
0 V.21 300
1 V.22 1200
2 V.22bis 2400 or 1200
3 V.23 1200
9 V.32 9600 or 4800
10 V.32bis 14400, 12000, 9600, 7200, or 4800
11 V.34 33600, 31200, 28800, 26400, 24000, 21600,19200, 16800,
14400, 12000, 9600, 7200, 4800, or 2400
2
12 V.90 56000, 54667, 53333, 52000, 50667, 49333, 48000, 46667,
45333, 44000, 42667, 41333. 40000, 38667, 37333, 36000,
34667, 33333, 32000, 30667, 29333, or 28000
3
56 K56flex 56000, 54000, 52000, 50000, 48000, 46000, 44000, 42000,
40000, 38000, 36000, 34000, or 32000
64 Bell 103 300
69 Bell212 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.
1
. Used mostly to is-
NTER
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