References

DART 300 Modem

Table 12-1: AT Commands in CDPD Mode (continued)

Command Description

ZReset 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

0Ignore DTR. After entering the data state, command state cannot be re-entered again without a modem reset or detecting the escape sequence.

1Enter command state. The modem condition (on or off-line) is not affected.

2Perform 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.

 

 

 

 

 

 

 

 

 

 

 

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Sierra Wireless DART 300 manual AT Commands in Cdpd Mode Command Description, AT & Commands in Cdpd Mode Description