Specifications

Voice Commands
Rev. 8 May.12 Proprietary and Confidential 137
!AVDTMFTXG
Supporting chipsets (voice-
enabled devices only):
• MDM6200
• MSM6290 (min f/w rev:
K1_0_2_0ap)
• QSC6270 (min f/w rev: S2.0)
Set/report the DTMF Tx gain
Set the DTMF Tx gain for the specified audio profile. The DTMF Tx gain determines
the gain, from -84dB to +12dB, for the DTMF tone that is transmitted over the air.
This setting is stored in non-volatile memory and persists across power cycles. The
change to the audio system takes effect when a phone call is made or received.
Usage:
• Execution: AT!AVDTMFTXG=<profile>, <value>
Response:
OK
Purpose: Set the DTMF Tx gain for the specified <profile>.
• Query: AT!AVDTMFTXG?<profile>
Response:
<value>
OK
Purpose: Return the current DTMF Tx gain (<value>) for the specified
<profile>.
Parameters:
<profile> (Audio profile number)
• MSM6290, QSC6270:
• 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> (Gain value for selected <profile>)
• The value is entered/returned in hexadecimal format.
Valid ranges:
• 0x0000–0x4B0 (0x0000=mute)
• 0xEC78–0xFFFF
• To calculate the gain in dB, convert <value> to decimal (<decvalue>) and use
the following formula:
Gain = 20 log
10
(<decvalue> / 16384)
• Unity gain=0x4000
Table 7-5: Voice command details (Continued)
Command Description