Specifications

AirPrime UMTS / LTE MC/SL-Series Extended AT Command Reference
132 Proprietary and Confidential 2130616
Command reference
Table 7-5: Voice command details
Command Description
!AVAUDIOLPBK
Supporting chipsets (voice-
enabled devices only):
• MDM6200
• MSM6290 (min f/w rev:
K1_0_1_0ap)
• QSC6270 (min f/w rev: S2.0)
Enable/disable an audio loopback
Configure an audio loopback. The loopback occurs at the vocoder interface and tests
the audio front end with the EFR (Enhanced Full Rate) vocoder.
Usage:
• Execution: AT!AVAUDIOLPBK=<enable>
Response:
OK
Purpose: Enable or disable audio loopback.
Parameters:
<enable> (Enable/disable the loopback)
• 0=Loopback off
• 1=Loopback on
!AVCODECRXG
Supporting chipsets (voice-
enabled devices only):
• MSM6290 (min f/w rev:
K1_0_2_0ap)
• QSC6270 (min f/w rev: S2.0)
Set/report CODEC Rx gain
Set the CODEC Rx gain for the specified audio profile. The CODEC Rx gain is
applied to the digital signal prior to its conversion to the analog domain to provide
additional gain range from -84dB to +12dB in the receive direction.
This setting is stored in non-volatile memory and persists across power cycles.
Note: This command has no effect when PCM audio is being used.
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!AVCODECRXG=<profile>, <value>
Response:
OK
Purpose: Set the CODEC Rx gain for the specified <profile>.
• Query: AT!AVCODECRXG?<profile>
Response:
<value>
OK
Purpose: Return the current CODEC Rx gain (<value>) for the specified
<profile>.
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