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References DART 300 Modem
Page 102 2110212 Rev 1.0
Table 12-1: AT Commands in CDPD Mode (continued)
Command Description
Z
Reset to Stored Profile
The modem loads the profile from permanent storage into the active memory.
Any non-stored parameters previously set by the user are returned to the factory settings. See &W
for information on saving the user profile. See Section 12.6 for information on what settings are
recalled and factory default settings.
The modem will not change state or condition.
Any parameter value is ignored. There is only one CDPD profile saved.
Table 12-2: AT [&] Commands in CDPD Mode
Command Description
&C[n]
Data Carrier Detect Control
This command is supported for backward compatibility only. The modem takes no action. Any
parameter value is ignored.
DCD reflects the session state of the modem. If DCD is active, there is an open session.
&D[n]
Data Terminal Ready Options
Determines what actions are taken by the modem in response to an on-to-off transition in the Data
Terminal Ready (DTR) signal from the host (DTE).
Value Setting
0 Ignore DTR. After entering the data state, command state cannot be re-entered again
without a modem reset or detecting the escape sequence.
1 Enter command state. The modem condition (on or off-line) is not affected.
2 Perform the equivalent of ATH0, and then enter command state. If +WS173=1
(Auto-register) then the modem will switch off DCD but remain registered. (Default)
&F
Factory Settings Restore
Reloads the factory-stored default configurations for the CDPD mode into active memory. See
Section 12.6 for information on what settings are stored and factory default values.
The modem will not change state or condition.
Any parameter value is ignored.
&I
Ring Indicator
Enables of disables the use of the Ring Indicator (RI) signal when in SLIP or PPP packet service
with an open session. When enabled, the RI signal toggles active for 1 second and off for 3
seconds when a CDPD message arrives. This may or may not be a complete IP packet. At the
end of the 4-second cycle a new check is made for active message reception. If there is a message
coming in, the modem repeats the cycle; otherwise the RI remains off until the next CDPD
message arrives.
Value Setting
0 Disable RI.
1 Enable RI (Default)
&W
Write the Active Profile
Saves the configuration in active memory to the stored CDPD profile in non-volatile memory.
See Section 12.6 for information on what settings are saved.
Any parameter value is ignored. There is only one CDPD profile stored.