Rockwell RCV144ACx, Command Reference Manual

Page: 32 / 186

AT Command Reference Manual
3-14 1048
3.2.2 AT& Commands
&Cn - RLSD (DCD) Option
The modem controls the RLSD output in accordance with the parameter supplied. The parameter value, if valid, is written to
S21 bit 5.
&C0 RLSD remains ON at all times.
&C1 RLSD follows the state of the carrier. (Default.)
Result Codes:
OK n = 0 or 1.
ERROR Otherwise.
&Dn - DTR Option
This command interprets the ON to OFF transition of the DTR signal from the DTE in accordance with the parameter
supplied. The parameter value, if valid, is written to S21 bits 3 and 4. Also, see S25.
&D0 - DTR drop is interpreted according to the current &Qn setting as follows:
&Q0, &Q5, &Q6 DTR is ignored (assumed ON). Allows operation with DTEs which do
not provide DTR.
&Q1, &Q4 DTR drop causes the modem to hang up. Auto-answer is not affected.
&Q2, &Q3 DTR drop causes the modem to hang up. Auto-answer is inhibited.
&D1 DTR drop is interpreted according to the current &Qn setting as follows:
&Q0, &Q1, &Q4, &Q5, &Q6 DTR drop is interpreted by the modem as if the asynchronous
escape sequence had been entered. The modem returns to
asynchronous command state without disconnecting.
&Q2, &Q3 DTR drop causes the modem to hang up. Auto-answer is inhibited.
&D2 DTR drop is interpreted according to the current &Qn setting as follows:
&Q0 through &Q6 DTR drop causes the modem to hang up. Auto-answer is inhibited.
(Default.)
&D3 DTR drop is interpreted according to the current &Qn setting as follows:
&Q0, &Q1, &Q4, &Q5, &Q6 DTR drop causes the modem to perform a soft reset as if the
Z command were received. The &Y setting determines which profile is
loaded.
&Q2, &Q3 DTR drop causes the modem to hang up. Auto-answer is inhibited.
If &Q5, &Q6, +FCLASS=1 or +FCLASS=2 is in effect, the action taken is the same as for &Q0.
&Fn - Restore Factory Configuration (Profile)
The modem loads the factory default configuration (profile). The factory defaults are identified for each command and in the
S-Register descriptions. A configuration (profile) consists of a subset of S-Registers.
&F0 Restore factory configuration 0.
&F1 Restore factory configuration 1.
Result Codes:
OK
ERROR If the modem is connected.