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40 Chapter 9 Modem Emulation
AT&Mn Accepted but ignored.
OK n=0, 1, 2
ERROR
Otherwise
AT&Pn Accepted but ignored.
OK n=0, 1, 2
ERROR
Otherwise
AT&Qn Accepted but ignored.
OK n=0 to 8
ERROR
Otherwise
AT&Rn
RTS/CTS Option
This selects how the Digi Device Server controls CTS. CTS is modified if
hardware flow control is selected (see &K command). The parameter value,
if valid, is written to S21 bit2.
&R0CTS reflects the ability of the modem to transmit data. For example,
CTS will drop during retrains. In sync mode, CTS tracks the state of RTS;
the RTS-to-CTS delay is defined by S26. In async mode, CTS is normally
ON and will turn OFF only if required by flow control.
&R1CTS forced on (default). In sync mode, CTS is always ON (RTS transi-
tions are ignored). tracks the state of RTS. In async mode, CTS is normally
ON and will turn OFF only if required by flow control.
&R2CTS follows RTS.
OK n=0 or 1
ERROR
Otherwise
AT&Sn
DSR Override
This command selects how the modem will control DSR. The parameter
value, if valid, is written to S21 bit 6.
&S0DSR will remain ON at all times. (Default.)
&S1DSR will become active after answer tone has been detected and inac-
tive after the carrier has been lost.
OK n=0 or 1
ERROR
Otherwise
AT&Tn Accepted but ignored.
OK n= 0
ERROR
Otherwise
AT&V
Display Current Configuration and Stored Profiles
There is no NVRAM support currently.
OK
AT&Vn Accepted but ignored.
OK n=0 to 5
ERROR
Otherwise
AT&V6 Display current IP settings of the Device Server
OK
AT&Wn Accepted but ignored.
OK n=0 or 1
ERROR
Otherwise
AT&Xn Accepted but ignored.
OK n=0 or 1
ERROR
Otherwise
AT&Yn Accepted but ignored.
OK n=0 or 1
ERROR Other-
wise
AT&Zn
&Zn=x - Store Telephone Number.
Currently not supported
OK n=0 or 3
ERROR
Otherwise
AT\An Accepted but ignored.
OK n=0 to 3
ERROR
Otherwise
AT
Command
Function
Result
Code