Epson ESC/VP21 User Manual page 16

Control Speaker Volume
Ln
L0
L1
L2
L3
Monitor Speaker On/Off
Mn
M0
M1
M2
M3
Nn Select Data Rate Handshake
This command specifies whether the resulting modem-to-modem data rate can be
different than the local DTE-to-modem data rate.
N0
N1
8
Low volume.
Low volume.
Medium volume. (default)
High speaker volume.
Speaker is always off.
Speaker is off while receiving carrier. (default)
Speaker is always on.
Speaker disabled while dialing or receiving carrier
When originating or answering, handshake only at
the DTE-to-modem data rate.
When originating or answering, begin handshaking
at the DTE-to-modem data rate. If the remote modem
does not support the local DTE-to-modem data rate.
fall down to the highest compatible data rate. (default)
COMMAND REFERENCE - 2