Siemens TC37 Module - AT+CLVL Loudspeaker Volume Level

AT Command Set
TC3X_ATC_01_V04.00 Page 83 of 204 29.05.2002
4.21 AT+CLVL Loudspeaker volume level
Test command
AT+CLVL=?
Response
+CLVL: (list of supported <level>s)OK
Read command
AT+CLVL?
Response
+CLVL: <level>
OK/ERROR/+CME ERROR
Write command
AT+CLVL=<level>
Response
OK/ERROR/+CME ERROR
Parameter
<level> Loudspeaker Volume Level (0-4)
Reference
GSM 07.07
Note
· The write command can only be used in audio mode 2 – 6.
· The values of the volume steps can be specified with the parameters
<outCalibrate[0]>,...<outCalibrate[4]> of the AT^SNFO command (see
Chapter 6.24).
· As an alternative to AT+CLVL, you can use AT^SNFV as described in
Chapter 6.27. The parameter <level> is identical with <outStep> used
in the AT^SNFV command.
· Any change to <level> (or <outStep>) takes effect in audio modes 2 to
6. That is, when you change <level> (or <outStep>) and then select
another mode with AT^SNFS, the same value will be applied. The
only exception is audio mode 1 which is fixed to <level>=4 (or
<outStep>=4).
· The value of <level> (or <outStep> is stored non-volatile when the ME
is powered down with AT^SMSO or reset with AT+CFUN=1,1. Any
other values changed with AT^SNFO need to be saved with
AT^SNFW for use after restart.