Maxim Integrated Teridian V.22 bis Linux Softmodem for 73M1822/73M1922 MicroDAA - Manual (Page 13)

UG_1x22_043 V.22 bis Linux Softmodem for 73M1x22 MicroDAA User Guide
Rev. 1.5 13
O6 Enables rate change to 1200 bps
O7 Enables rate change to 2400 bps
The O[n] command is used to go back on-line when the command state was entered by
issuing the +++ escape sequence or turning
DTR from ON to OFF with the appropriated S-
Register setting in effect. The O[n] command applies only to asynchronous operation.
Note: If commands O0 or O1 are given to the modem while not connected, it will respond
with ERROR.
P Pulse Dial
Causes the modem to pulse dial.
The P modifier can be issued in conjunction with the dial command, or alone, to designate
the method used for subsequent dialing.
Q Result Codes Control
 Q0 Result codes enabled
Q1 Result codes disabled
Refer also to the V[n] and X[n] commands.
R Data Terminal Ready (
DTR) Action
 R0 Modem ignores DTR
R1 Modem assumes the Command State when DTR transitions from ON to OFF
R2
Modem goes on-hook (hangs up), disables the Auto Answer mode, and
assumes the Command State when
DTR transitions from ON to OFF.
Turning
DTR back ON will enable auto-Answer mode.
R3 Modem is reset when
DTR transitions from ON to OFF
R4
Enable V.23 Turnaround in Master Mode (On to Off DTR transition starts the
turnaround). Turnaround is done via RTS in all other R command settings.
R5 Power Down with DTR toggle (need hard reset)
The R[n] command selects how the Data Terminal Ready ( DTR) signal is used by the
modem.