Longshine LCS-8156C1 - Manual (Page 127)

AT Commands for CX930xx Modem Reference Manual
102752B Conexant 3-103
S22 - Speaker/Results Bit Mapped Options Status
S22 indicates the status of command options.
Default: 117 (75h) (01110101b)
Bits 0-1 Speaker volume (Ln)
0 = Low volume (L0)
1 = Low volume (L1) (Default.)
2 = Medium volume (L2)
3 = High volume (L3)
Bits 2-3 Speaker control (Mn)
0 = Speaker is always off (M0)
1 = Speaker is on during call establishment, but off when
receiving carrier (M1) (Default.)
2 = Speaker is always on (M2)
3 = Speaker is off when receiving carrier and during dialing,
but on during answering (M3)
Bits 4-6 Limit result codes (Xn)
0 = X0
4 = X1
5 = X2
6 = X3
7 = X4 (Default.)
Bit 7 Reserved