Specifications

AT Command Set Reference
Ver. 1.00
GSM1308AT001 Page 215 Ver. 1.00 – 10/29/2008
4.3.4. $SPKCFG Set Downlink Voice Parameters
(continued)
< volume > The value of volume is as follows:
0 => Mute
1 => -24 dB
2 => -18 dB
3 => -12 dB
4 => -6 db
5 => 0 dB
< filter > 0 - on
1 - off
Enable/disable voice filter. Filter coefficients set by $DFIR/$UFIR
commands
<highpass filter > 0 - on
1 – off
<headset Ov Mid> 0 - no pseudo ground is provided on
terminal HSOVMID (Pin 61)
1 - a pseudo ground is provided on terminal
HSOVMID (Pin 61)
Note: Please refer to the Integration Guide for proper use of the
HSOVMID (headset output common mode feature.)
<voice mode> 0 Selects handset for voice
1 Selects headset for voice
3 Automatic mode
Reference N/A
Standard Scope Optional
Enfora Implementation Scope Full
Notes When filter =1, volume controls are
disabled. Volume is fixed to a moderate
level and cannot be changed.