HP Compaq Presario,Presario 2105 Reference Manual page 122

Voice Commands (Continued)
Command
+VSP=
a
+VTD=
n
+VTR
+VTS=
string
+VTX
AT* Commands
Command
*B
*D
Reference Guide
(Conexant)
Disable ( a =0) or enable ( a =1) speakerphone.
Set beep duration (1 to 500 × 0.01 sec).
Start voice transmission and reception.
Send voice tones.
Start voice transmission.
(Conexant)
Display black-listed numbers.
Display delayed numbers.
Reference Information
7–13