4 at commands, s-registers, and result codes, Multimodemii user guide – Multitech MULTI MODEM II MT5600BA User Manual
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4 AT Commands, S-Registers, and Result Codes
33
MultiModemII User Guide
Command:
L
n
Monitor Speaker Volume
Values:
n = 1
Default:
1
Description:
L1
Select low volume.
Note:
Use the M command to turn the speaker on or off.
Command:
L5
Display Legacy Parameters
Value:
5
Default:
None
Description:
Displays the current values for the error correction, flow
control, data compression, and serial port speed commands.
Example:
atl5
&E2 &E3 &E15 $SB115200
OK
Note:
Use the &V command to display the other parameters.
Command:
M
n
Monitor Speaker Mode
Values:
n = 0, 1, 2, or 3
Default:
1
Description:
M0
Speaker is always off.
M1
Speaker is on until the carrier signal is detected.
M2
Speaker is always on when the modem is off-hook.
M3
Speaker is off when receiving carrier and during dialing, but
on during answering.
Command:
N
n
Modulation Handshake
Values:
n = 0 or 1
Default:
1
Description:
N0
Disables automode. The modem attempts a handshake at the
speed set by S37 or, if S37=0, at the most recently sensed serial
port speed.
N1
Enables automode. The modem attempts a handshake at the
speed set by S37 or, if S37=0, at the highest possible speed.
During the handshake, fallback to a lower speed can occur.
Note:
Setting the N command automatically sets the
parameter of the +MS command. N and S37 are provided only
for compatibility with existing software. +MS is the recom-
mended command.