Data Terminal Ready (&D); Serial Port Ring Indicate (\R) - Black Box 325 User Manual

MODEM 325 AND MODEM 325 CARD
6.9.3 D T
ATA ERMINAL
In data mode, DTR may be used for modem control.
Command
&D
&D1
&D2
&D3
†default
If DTR Controls Dialer is selected, then &D1 and &D2 will cause an autodial after an off-to-
on transition of DTR.
6.9.4 S -P R
ERIAL ORT ING
Determines indication mode of serial-port ring indicate line (pin 22) and LCD display.
Command
\R
\R2
†default
6 8
R (&D)
EADY
Table 6-9. Data Terminal Ready (&D).
I (\R)
NDICATE
Table 6-10. Serial Port Ring Indicate (\R).
Description
Causes the modem to ignore DTR†
Causes the modem to go to command mode from data mode when
DTR goes from on to off.
Commands the modem to disconnect when DTR goes from on to off
and disables autoanswer while DTR is off.
Disconnects, recalls command mode, and resets the modem to a
stored configuration when DTR goes from on to off. In dial-line mode,
the modem will disconnect; in leased-line mode, the modem will
retrain.
NOTE
Operation
Causes the LCD ring-indicate display and EIA-232 pin 22 to turn on
(high) when the phone rings and remain on during the duration of the
call.
Causes the LCD ring-indicate display and EIA-232 pin 22 to turn on
(high) when the phone rings and turn off (low) when the call is
answered.†