16
AT COMMANDS (continued)
+FCLASS=n Fax class
+FCLASS=0 Data
+FCLASS=1 Fax Class 1 (EIA 578)
+FCLASS=2 Fax Class 2 (EIA/TIA SP-2388)
&&P1
Clone Remote
&&P1
Copies firmware to the connected
modem.
&Cn
LSD Control
&C0
Forced On. Forces LSD ON at all times.
&C1
Standard RS232. LSD is ON when the
remote modem’s carrier signal is
detected. LSD is Off when carrier
signal is not detected.
&C2
Wink When Disc. LSD, normally forced
ON, turns Off for approximately 1 to 2
seconds upon disconnect.
&C3
Follows DTR. State of LSD follows state
of DTR.
&C4
Simulated Control Carrier. State of LSD
follows state of remote modem’s RTS.
&C5
=DTR/DiscOff. State of LSD follows
state of DTR except upon a disconnect
where DTR remains ON and LSD turns
Off. DTR must then toggle Off and ON to
turn LSD ON. Required for AT&T
DATAKIT
dial-out applications.
&Dn
DTR Action
&D0
Ignore. Modem ignores the DTR (Data
Terminal Ready) signal and treats it as
always ON.
&D1
Off=Command Mode. Modem enters
online Command mode when DTR is
lowered.
&D2
Standard RS232. DTR signal is
controlled by the DTE.
&D3
Off=Reload Straps. Modem loads Active
(Operating) area with Active (Saved)
area when DTR is lowered.
&D4
Controls On-Hook. Modem does not
disconnect until DTR lowered by DTE.
&D6
Off=Restrap to Async Dial. Modem loads
Async Dial template when DTR switches
off.
&Fn
Loads Factory Configuration
&F0
Loads the Async Dial template into the
Active(Operating) area.
&F1
Loads Sync Dial.
&F2
Loads Sync Leased (Answer Mode).
&F3
Loads Unix Dial.
&F4
Loads Sync Leased (Originate Mode).
&F5
Loads Cellular (Mobile) (if ETC installed).
&F6
Loads Cellular (PSTN) (if ETC installed).
&Gn
V.22bis Guard Tone
&G0
Disables guard tone.
&G1
Sets guard tone to 550 Hz.
&G2
Sets guard tone to 1800 Hz.
AT COMMANDS (continued)
&
I
n
Dial Transmit Level
&
I
10
–10 dBm.
&
I
11
–11 dBm.
•
•
•
•
&
I
32
–32 dBm.
&
I
99
ETC 1.0 (if ETC installed).
&
I
100
ETC 1.1 (if ETC installed).
&Jn
Dial Transmit Level Type
&J0
Modem sets dial transmit level to
Permissive mode at –9 dBm.
&Ln
Leased-Line Mode
&L0
Disables leased-line operation.
&L1
2-wire originate leased-line operation.
&L3
2-wire answer leased-line operation.
&Mn,&Qn Async/Sync Mode and DTE Dialer Type
&M0,&Q0 Modem operates in Async mode and
uses AT command protocol.
&M1,&Q1 Modem operates in Sync mode and uses
AT command protocol.
&M2,&Q2 Modem operates in Sync mode and dials
the number stored in directory location 1
when DTR signal turns Off and then ON.
&M3,&Q3 Modem operates in Sync mode and uses
AT command protocol.
&M231, &Q231 Modem operates in Async mode;
the DTE Dialer Type is disabled.
&M232, &Q232 Modem operates in Async mode;
V.25bis Async dialing is enabled.
&M233, &Q233 Modem operates in Sync mode;
V.25 Bisync dialing is enabled.
&M234, &Q234 Modem operates in Sync mode;
V.25bis HDLC dialing is enabled.
&Rn
RTS Action
&R0
Standard RS232. RTS action is
controlled by DTE.
&R1
Ignores RTS. Modem ignores RTS
signal and treats it as always ON.
&R2
Simulated Control Carrier. State of RTS
follows state of LSD.
&Sn
DSR Control
&S0
Forced On. Forces DSR signal ON.
&S1
Standard RS232. Modem controls DSR
signal.
&S2
Wink When Disc. DSR signal turns Off
for approximately 1 to 2 seconds upon
disconnecting.
&S3
Follows DTR. Modem sends DSR to DTE
when it receives DTR from DTE.
&S4
On Early. DSR is Off when modem is in
idle state. DSR goes ON when modem
enters Data mode.
&S5
Delay to Data. DSR does not turn ON
until the modem enters Data mode.
