Z02215
Single Chip Modem with Integrated Controller, Data Pump, and AFE
27
Table 3. AT Command Set (Continued)
Function and Description
Command
O
Return to
ON-LINE
Mode
The O command returns the modem to the ON-LINE mode. It frequently follows
the escape character sequence (+++) to resume communication with the
remote modem. If handshaking is started, the modem uses ORIGINATE or
ANSWER mode handshaking.
O0
This option returns the modem to the ON-LINE state from
the COMMAND state during a telephone line connection.
The modem starts handshaking if there is no telephone line
connection but the modem was off-hook.
O1
This option returns the modem to the ON-LINE state and
retrains its data pump during a telephone line connection.
The modem starts handshaking if no telephone line
connection exists and the modem is off-hook.
P
Pulse
Dialing
Selects the PULSE method of dialing. Pulse is the default dialing method in
North America.
&P
Pulse Dial
The &P command sets the cadence of the pulse dial. The country configuration
Make/Break may disable this command, forcing particular pulse dialing parameters. When
Ratios
country restrictions are in effect and this command is issued, the modem
returns an ERROR result.
&P0
&P1
&P2
&P3
39%/61% make/break ratio and 10 pulses per second when
pulse dialing. This value is the default value.
33%/67% make/break ratio and 10 pulses per second when
pulse dialing.
39%/61% make/break ratio and 20 pulses per second when
pulse dialing.
33%/67% make/break ratio and 20 pulses per second when
pulse dialing.
Q
Result Code This command enables or disables display of result codes.
Display
Q0
For this option, result codes are displayed. This value is the
Options
default value for North America.
Result codes are not displayed.
Q1
PS001907-0904
AT Command Set
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