Multi-Tech Systems MT5600DSVD - Manual (Page 31)

MultiModemDSVD User Guide 4 AT Commands, S-Registers, and Result Codes
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Command: L n Monitor Speaker Volume
Values: n = 0, 1, 2, or 3
Default: 1
Description: L0 Select low volume.
L1 Select low volume.
L2 Select medium volume.
L3 Select high 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.