Specifications

AirPrime UMTS / LTE MC/SL-Series Extended AT Command Reference
144 Proprietary and Confidential 2130616
!AVNS
Supporting chipsets (voice-
enabled devices only):
• MDM6200
• MSM6290 (min f/w rev:
K1_0_2_0ap)
Enable/disable noise suppression
Set the noise suppression mode for a specified profile. The noise suppressor
reduces or eliminates continuous background noise, providing a clearer Rx audio
signal.
This setting is stored in non-volatile memory and persists across power cycles.
Device-specific details:
• MSM6290 (Firmware revisions K2_0_7_8ap and lower):
• The change takes effect the next time the modem restarts.
• All other chipsets/firmware revisions:
• The change takes effect immediately for the specified profile.
Usage:
• Execution: AT!AVNS=<profile>, <value>
Response:
OK
Purpose: Set the noise suppression mode for the specified <profile>.
• Query: AT!AVNS?<profile>
Response:
<value>
OK
Purpose: Return the noise suppression mode (<value>) for the specified
<profile>.
Parameters:
<profile> (Audio profile number)
• MSM6290:
• 0=Handset
• 1=Headset
• 2=Car kit
• 3=Speaker phone
• 4=Auxiliary
• 5=TTY
• 6=Auxiliary external PCM (128 kHz clock)
• 7=Primary external PCM (2 MHz clock)
• MDM6200:
• 7=Primary external PCM (2 MHz clock)
<value> (Turn noise suppression mode on/off)
• 0=Noise suppression mode off
• 1=Noise suppression mode on
Table 7-5: Voice command details (Continued)
Command Description