Digicom pocket GSM User Manual page 63

PocketGSM
A.3. Values of the speaker gain (AT+VGR=<val>)
<val>
0 – 15
16 – 31
32 – 47
48 – 63
64 – 79
80 – 95
96 – 111
112 – 127
128 – 143
144 – 159
160 – 175
176 – 191
192 – 207
208 – 223
224 – 239
240 – 255
Speaker gain
+6 db
+4 db
+2 db
+0 db
-2 db
-4 db
-6 db
-8 db
-10 db
-12 db
-14 db
-16 db
-18 db
-20 db
-22 db
-24 db
A.5
Appendix A