5-24 User
Manual
Command
Description
Function
+VGT=n Volume
Selection
n=121-131
n=128 ( default )
+VIT=n DTE/DCE
Inactivity Timer
n=0-255 ( units of 1.0 second )
n=0 Disables inactivity timer
( default )
n
≠
0 Inactivity timer active
+VNH=n Automatic
Hang-UP
Control
0 = The modem retains automatic
hang-up as normal in data and
fax modes ( default )
1 = The modem disable automatic
hang-up usually found in
non-voice modes
2 = The modem disable all automatic
hang-up usually found in
non-voice modes except a
'logical' hang-up
+VRA=n Ringback-Goes-
Away Timer
n=0-50 ( in 100ms increments )
n=0 The DCE returns the 'OK' code
immediately after ringback
n=50 ( default )
+VRN=n Ringback-Never
-Appeared
Timer
n=0-255 ( in 1-second increments )
n=0 The DCE returns the 'OK' code
immediately after dialing
n=10 ( default )
+VRX
Record Mode
This command causes the modem to
enter record mode to record voice
messages
+VTX
Play Mode
This command causes the modem to
start voice transmission ( playback
mode ) and play back a previously
recorded voice messages
+VSP=n Speakerphone
On/Off Control
0 = Speakerphone mode disabled
(default )
1 = Speakerphone mode enabled
