Chapter 14 – Specific AT Commands

Set Voice Privacy Level +WPRV

Description: This command requests the CDMA voice privacy level. CDMA voice privacy is an optional feature of CDMA networks. Therefore, voice privacy will only become enabled during a voice call if the base station supports voice privacy; otherwise this feature is unavailable on your CDMA carrier. Thus, this command enables a request from the modem to the base station for voice privacy. If voice privacy is activated by the base station, the unsolicited command +WPRV:1 will appear indicating the long code PN mask for the traffic channel has been scrambled by the base station (also see Chapter 19). This command may be issued before or during a voice call.

Note: When voice privacy is enabled, an audible alert will be generated if the state of voice privacy changes (loss or establishment).

Values:

<voice privacy level>

 

 

 

0: Normal (default)

 

 

 

1: Private

 

 

Syntax:

Command syntax: AT+WPRV=<voice privacy level>

 

Command

 

Possible Responses

 

AT+WPRV=0

 

OK

 

Note: Set to normal voice call

 

 

 

AT+WPRV=1

 

OK

 

Note: Request a secure voice call

 

OK

 

 

 

 

ATD18005551212;

 

+WORG:18005551212

 

 

 

+WCNT:3

 

 

 

+WPRV:1

 

 

 

Note: Voice Privacy is now ON

Multi-Tech Systems, Inc. CDMA Wireless AT Commands - PN S000294C

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Multi-Tech Systems CDMA Wireless Modem Set Voice Privacy Level +WPRV, Values Voice privacy level, Normal default Private