Digicom pocket GSM User Manual page 64

PocketGSM
A.3.1. Values of the Microphone transmission (AT+VGT=<val>)
"telephone handset"
<val>
0 – 31
32 – 63
64 – 95
96 – 127
128 – 159
160 – 191
192 – 223
224 – 255
Values for
Gain
+30 db
+33 db
+36 db
+39 db
+42 db
+45 db
+48 db
+51 db
Values for
"loud speaking telephone"
<val>
0
1
2
3
...
19
20
21 – 60
61
62
...
101
102 – 127
128 – 243
244
245
246
...
255
A.6
Appendix A
Gain
+0 db
+0,5 db
+1 db
+1,5 db
...
9,5 db
10 db
30 db
30,5 db
31 db
...
50,5 db
51 db
-6,5 db
-6 db
-5,5 db
-5 db
...
-0,5 db