Paradyne COMSPHERE 3800PLUS User Manual page 145

AT Command
&M n
Async/Sync Mode and DTE Dialer Type
and &Q n
&M0, &Q0
&M1, &Q1
&M2, &Q2
&M3, &Q3
&M6, &Q6
&M231, &Q231
&M232, &Q232
&M233, &Q233
&M234, &Q234
&M235, &Q235
&M236, &Q236
The &M2, &Q2, &M6, &Q6, &M231, &Q231, &M236, and &Q236
commands disable the use of AT commands and force the modem into
Dumb mode. The only way to gain control of the modem is the front panel.
&R n RTS Action
&R0 Standard RS232. RTS must be ON for the DTE to transmit to the
modem.
&R1 Ignores RTS. Modem acts as if RTS is always ON.
&R2 Simulated Control Carrier. RTS input controls the remote modem's
LSD signal.
&R3 Control Carrier. The DTE's RTS signal controls the modem's carrier
signal.
&S n DSR Control
&S0 Forced On. DSR output is constantly ON.
&S1 Standard RS232. The modem controls DSR to the DTE, turning ON
DSR when handshaking begins, and Off upon disconnect.
&S2 Wink When Disconnect. DSR is normally ON, but is forced Off
momentarily during a disconnect.
&S3 Follows DTR. When the modem receives DTR from the DTE, it
sends DSR to the DTE.
&S4 On Early. DSR is Off when the modem is in an idle state, and goes
ON when a command is received to enter Data mode.
&S5 Delay to Data. Like Standard RS232, but DSR is not turned ON
until the modem is in Data mode.
&S6 Dial Backup Toggle. DSR is turned Off during a dial backup attempt,
and ON when the attempt is completed.
3980-A2-GB30-40
Table 13-1
(9 of 15)
3800 Plus AT Commands
Description
Modem operates in Asynchronous mode and uses
AT Command protocol.
Modem operates in Synchronous mode and uses
AT Command protocol.
Modem operates in Synchronous mode and dials telephone
number stored in directory location 1 when DTR signal turns
Off and then ON.
Modem operates in Synchronous mode and uses
AT Command protocol.
Modem operates in Synchronous mode and dials telephone
number stored in directory location 1 when DTR signal turns
Off and then ON and the leased line is down.
Modem operates in Asynchronous mode; the DTE Dialer
Type is disabled.
Modem operates in Asynchronous mode; V.25bis Async
dialing is enabled.
Modem operates in Synchronous mode; V.25bis Bisync
dialing is enabled.
Modem operates in Synchronous mode; V.25bis HDLC
dialing is enabled.
Modem operates in Asynchronous mode; AT&T
Exclusive dialing is enabled.
Modem operates in Synchronous mode; the DTE Dialer
Type is disabled.
October 1998
AT Command Set and S-Registers
Front Panel Branch
Configure\Edit\
DTE Dialer
Configure\Edit\
DTE Interface
Configure\Edit\
DTE Interface
13-11