Paradyne 3800 User Manual
Page 50
4. AT Command Set and S-Registers
4-15
3830-A2-GB91-20
November 1996
Table 4-2
(9 of 22)
Model 3830 AT Commands
&D
n
DTR Action
Data Terminal Ready (DTR) is a signal from the DTE to the modem
indicating that the DTE is connected and ready for operation.
&D0 Ignore. Modem ignores the true status of DTR and treats it as
always ON.
&D1 Off=Command Mode. Modem enters online Command Mode if
connected when DTR switches off.
&D2 Standard RS232. DTR Signal is controlled by the DTE.
&D3 Off=Reload Strap. Follows Standard RS232 operation, except that
when DTR switches Off, the modem loads the Active (Saved) area into
the Active (Operating) area.
&D4 Controls On-Hook. Follows Standard RS232 operation, except that
modem does not disconnect until DTR is lowered by the DTE.
&F
n
Select Factory Default Configuration Options
Loads factory configuration options into the Active (Operating) area. The
&F5 and &F6 options invoke the Enhanced Throughput Cellular
t
(ETC
t
) feature.
&F0
Async Dial
&F3
UNIX Dial
&F5
Cellular (Mobile)
&F6
Cellular (PSTN)