Specifications

Table Of Contents
Chapter 15 Audio Commands
Multi-Tech Systems, Inc. CDMA C1 AT Commands Reference Guide 93
Values: <Level>
0
-84dB (no output)
1
-32dB
2
-28dB
3
-24dB
4
-20dB
5
-16dB
6
-12dB
7
-8dB
8
-4dB
9
0dB (default)
10
4dB
11
8dB
12
12dB
If no argument is supplied to the command, the default value is assumed. The configuration is
saved immediately. See the Audio Overview section for more information.
Special
Considerations:
The +CLVL gain value is added onto the +WDGR gain. Depending on the gain setting of +WDGR,
the full range of the +CLVL command may not be realized.
Example: If +WDGR is set to +12dB gain, the +CLVL command cannot add any more positive gain. Setting
the +CLVL command to +12dB gain would not yield a total of +24dB gain, since the gain stage
can only supply a maximum of +12dB gain.
The following formulas govern the total digital receive gain:
Total Gain = (WDGR Gain + CLVL Gain)
-84dB <= Total Gain <= +12dB
Initialize Voice Parameters +VIP
Description: This resets audio parameters back to factory default values.
The following parameters are restored:
Gain control (+VGR, +VGT)
Speaker & microphone selection (+SPEAKER)
Echo cancellation (+ECHO)
Side tone selection (+SIDET)
Digital gain (+WDGT, +WDGR)
Microphone gain enable (+MGE)
Loudspeaker volume level (+CLVL)
Syntax: AT+VIP
Command
Possible Responses
AT+VIP
OK
Note: Command valid