Toshiba Portege 3500 User Manual page 197

User's Manual
O0
Instructs the modem to exit on-line command
mode and return to data mode (see AT escape
sequence, +++).
O1
This command issues a retrain before returning to
on-line data mode.
O3
This command issues a rate renegotiation before
returning to on-line data mode.
Result Codes:
n = 0, 1, 3
OK
Otherwise
ERROR
This command configures the modem for pulse (non touch-tone)
dialing. Dialed digits are pulsed until a T command or dial
modifier is received. Tone dial is the default setting.
AT Commands
H-7