At" Commands Accepted With No Effect - Multitech MultiAccess MA30120 User Manual

"AT" Commands Accepted with No Effect

This section lists the "AT" Commands that are accepted by the MultiAccess modems but have no effect. When
they are met in the command input parser, any numerical argument is checked for validity, but it is otherwise
ignored. The result code remains "OK" unless the numerical argument is out of range, in which case it is set to
"ERROR". The following list also describes the normal use of the command used by a stand-alone modem
connected to a POTS line.
Ln Monitor Speaker Loudness
The "Ln" command normally controls the monitor speaker volume. The valid range of n is 0 to 3.
Mn Monitor Speaker Mode
The "Mn" command normally controls when the monitor speaker is on. The valid range of n is 0 to 2.
P Pulse Dial
The "P" command normally changes the dialing mode to pulse.
&Cn DCD Behavior
The "&Cn" command normally controls the DCD handshake signal presented by a modem to the terminal. The
valid range of n is 0 to 1.
&Dn DTR Behavior
The "&Dn" command normally determines the behavior of the modem when a terminal DTR transition to off is
detected. The valid range of n is 0 to 3.
&Kn Flow Control
The "&Kn" command normally controls flow control. The valid range of n is 0 and 3 to 6.
&Tn Loopback and Test
The commands "&T0" through "&T8" normally start and stop various loopback and test modes or control the
response to requests for loopback from the peer modem. The valid range of n is 0 only. Other values set the
result code to "ERROR" to reflect the fact that loopbacks and tests cannot be initiated by "AT" commands.
S0=n S Register 0
Normally used to control Auto Answer. Refer to S-Registers in the next section.
MultiAccess Communications Server MA30120 User Guide
Appendix B – Modem Commands
147