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AirPrime UMTS / LTE MC/SL-Series Extended AT Command Reference
158 Proprietary and Confidential 2130616
!AVTXVOL
Supporting chipsets (voice-
enabled devices only):
• MDM6200
• MSM6290 (min f/w rev:
K1_0_2_0ap)
• QSC6270 (min f/w rev: S2.0)
Note: For MDM8200A, see
!AVTXVOL on page 178.
Set Tx volume
Set the Tx volume gain for the specified audio profile. The Tx volume gain
determines the gain, from -84 dB to +12 dB, for the voice that is transmitted over the
air. This gain is applied to the PCM voice packets prior to feeding them into the
vocoder, which encodes the PCM packets into a more efficient format for over the air
transmission.
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 when a phone call is made or received.
• All other chipsets/firmware revisions:
• The change takes effect immediately for the specified profile.
Usage:
• Execution: AT!AVTXVOL=<profile>, <value>
Response:
OK
Purpose: Set the Tx volume gain for the specified <profile>.
• Query: AT!AVTXVOL?<profile>
Response:
<value>
OK
Purpose: Display the Tx volume gain 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> (Tx volume gain)
• The value is entered/returned in hexadecimal format:
• Min=0x0000 (mute)
• Max=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 value is 0x4000
Table 7-5: Voice command details (Continued)
Command Description
- AirPrime MC/SL-Series 1
- (UMTS/LTE) 1
- Extended AT Command 1
- Reference 1
- Trademarks AirCard 4
- Contact 4
- Information 4
- Revision 5
- Contents 11
- 1: About This Guide 13
- Command access 14
- Command timing 14
- Result codes 15
- References 15
- Terminology and acronyms 15
- Current firmware versions 15
- Document structure 16
- About This Guide 17
- Table 1-9: GPS commands 22
- Conventions 25
- 2: AT Password Commands 27
- Return modem hardware ID 36
- Return modem hardware version 37
- Generate melody on buzzer pin 39
- Enable/disable DARP for SAIC 47
- Configure DIO channels 49
- Enable/disable GCF test mode 53
- Set/return current SIM type 53
- Set/return HSDPA category 54
- Set/report HSUPA category 54
- Configure LTE NAS settings 56
- Configure MT PDP port mapping 57
- (or Release 99) 59
- Return Network Subset codes 62
- Return package version string 66
- Ping an IP address 71
- Select RAT acquisition order 75
- Read modem’s SKU 77
- Set/report Sleep Enable state 78
- Return wake-up event type 80
- 4: Diagnostic Commands 85
- Set/report TE-DCE baud rate 89
- 5: Test Commands 93
- Test Commands 95
- Return MT RSSI and RSQ 97
- !DAFTMACT 98
- • 0=R0 (highest gain) 99
- !DAGGAVGRSSI 99
- Return raw RSSI value 100
- Return synthesizer lock state 101
- !DASBAND 103
- !DASCHAN 103
- !DAGSTXBURST 103
- Set GSM Tx frame structure 104
- • 0=R0 (Highest gain) 105
- !DALSRXBW 105
- !DALGAVGAGC 105
- !DALGRXAGC 106
- (continued) 108
- Place modem offline 109
- Set frequency band 110
- Set modem channel (frequency) 111
- Set LNA gain state 112
- Set PDM value 113
- Turn Tx PA off 113
- Turn Tx PA on 114
- !DAWGRXAGC 115
- Set PA range state machine 118
- Enable/disable IMS test mode 120
- Key off the transmitter 120
- Key on the transmitter 121
- Turn second receiver on/off 122
- Read second receiver Rx AGC 123
- Read first receiver Rx AGC 123
- Turn transmitter on/off 123
- Set desired Tx AGC 124
- 6: Memory Management Commands 125
- Command reference 126
- 7: Voice Commands 127
- Audio profiles 128
- Profile activation 130
- Command summary 131
- Set/report CODEC Tx gain 135
- Set/report the DTMF Tx gain 137
- Set/report microphone gain 143
- Play DTMF tone 152
- Set Tx AGC 154
- Set/report Tx PCM filter tap 155
- Set Tx volume 158
- Voice Commands 159
- !AVTONEPLAY command 159
- 8: I2S Audio Commands 163
- Read a codec register 166
- Select codec mode 168
- Set codec register bit width 169
- Set/report voice decoder gain 169
- Set/report Rx voice volume 172
- Set I2S sample rate 175
- Select codec controller 178
- 9: GPS Commands 179
- Clear all GPS assistance data 184
- End an active session 184
- Initiate GPS position fix 185
- Set GPS LBS APNs 187
- Set GPS LBS APNs (continued) 188
- Set/report NMEA sentence type 192
- Request satellite information 196
- Set/report SUPL server URL 198
- !GPSTRACK 200
- Set GPS XTRA APNs 202
- Set GPS XTRA APNs (continued) 203
- Set/report GPS XTRA settings 203
- Error codes 208
- GPS Commands 209
- 10: STK Commands 211
- Display STK version 222
- 11: PAD Commands 243
- Disconnect PAD connection 246
- Disable PAD server 246
- Switch active PAD session 250
- 12: OMA-DM Commands 251
- Enter DM account credentials 255
- Configure DM sessions 258
- Commands 259
- Execution (GSM): 261
- Response: 261
- Set/report SAR backoff state 262
- (or Disable) 265
- A: Module Customization 269
- Table B-1: GSM/EDGE channels 275
- Table B-2: WCDMA Channels 276
- C: HSDPA/ HSUPA Categories 277
- D: Band Definitions 279
- Table 4-2: 3GPP bands 280
- E: ASCII Table 281
- Index (AT commands) 283
- Index — AT Commands 285
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