Siemens M20 Terminal Technical Description page 90

Siemens Information and Communication Products
AT+FMR Fax: report revision ID
Test command Response
AT+FMR=? OK
Read command Response
AT+FMR TA reports one or more lines of information text which permit the user to identify the version, re-
vision level or data or other information of the device.
<Revision Id>
Parameters
<Revision Id> according to the revision
Reference Note
AT+VGR Receive gain selection of speaker
Test command Response
AT+VGR=? +VGR: (list of supported <n>)
OK
Parameter
see set command
Read command Response
AT+VGR? +VGR: <n>
OK
Parameter
see set command
Set command Response
AT+VGR=<n> TA sets amplification of audio samples sent from the TA to the computer.
OK
Parameter
<n>
:
Note
Reference Note
GSM 07.07 Set command works only in audio mode 3.
Version 8 dated 15.03.00
OK
0 – Automatic gain control
1(0x1)-128(0x80)-255(0xFF)
gain=20*log(n/128)
default value is 64.
Hex input not accepted
AT command interface
A
90