Chapter 3: AT Commands Reference

+CFUN, Shut Down Phone Functionality

This command shuts down the phone functionality of smart phones and PDAs with phone capabilities in order to prevent interference from a nearby environment. This enables other functionality to continue to be used in environments where phone use is either impractical or not permitted. For example, on airplanes the use of Transceiver modules is forbidden during the entire flight, but the use of computers is allowed during much of the flight. This command enables other functionality to continue while preventing use of phone functionality.

 

 

 

 

Command

 

 

 

Type

Syntax

Response/Action

Remarks

 

 

 

 

 

 

 

 

Set

AT+CFUN=[<fun>

OK

The Set command selects the level of

 

[,<rst>]]

+CME ERROR: <err>

functionality <fun> in the smart phone or

 

 

 

PDA incorporating the G24-L.

Read

AT+CFUN?

+CFUN: <fun>

The Read command displays the current

 

 

OK

level of functionality.

 

 

 

 

Test

AT+CFUN=?

+CFUN: (list of

The Test command displays the list of

 

 

supported <fun>s), (list

supported functionality settings.

 

 

of supported <rst>s)

 

 

 

OK

 

 

 

 

 

 

 

 

 

The following table shows the AT+CFUN parameters.

 

 

 

Table 3-92: +CFUN Parameters

 

 

 

 

<Parameter>

 

 

Description

 

 

 

 

 

 

<fun>

 

Functionality levels:

 

 

0, 1 Full functionality (default 0)

 

 

4

Disables phone transmit & receive RF circuits

 

 

5-127

Reserved for future use

 

 

 

 

<rst>

 

0

Sets functionality to <fun> without resetting the device (default)

 

 

1

Resets the device before setting functionality to <fun>

 

 

 

 

 

 

 

 

Examples

 

 

AT+CFUN=?

 

 

+CFUN: (0-4), (0-1)

 

 

OK

 

 

AT+CFUN?

 

 

+CFUN: 0

 

 

OK

 

 

AT+CFUN=4

 

//Disable phone transmit and receive RF circuits

Ok

 

 

April 15, 2008

G24-L AT Commands Reference Manual

3-141

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PIONEERPOS G24-LC manual +CFUN, Shut Down Phone Functionality, 92 +CFUN Parameters, Parameter Description Fun, Rst