User`s guide

37
Command Option Function
11 DCE on-hook, DCE connected to microphone
13 DCE off-hook, DCE conneted to telco, speaker,
and microphone (speakerphone)
+VNH Automatic Hang-up Control
+VNH=0 Retain automatic hang-ups
+VNH=1 Disable DCE-initiated automatic hang-ups
+VNH=2 Disable all Automatic hang-ups
+VPR Voice DTE-DCE Rate
+VPR=0 Autobaud
+VRA Ringback Gone Timer
If, after detecting ringback, no further ringbacks
are detected after n /10 seconds, operate as
if the remote device answered the call.
+VRA= n If no ringback is received, after n /10 seconds,
assume that the remote device has answered
the call; n =0-255
+VRN Ringback Never Occurred
+VRN= n After n /10 seconds, operate as if ringback has
never occurred; n = 0-255
+VRX Voice Receive Mode
Determines whether the modem generates a
periodic beep, audible to both parties on the
speakerphone, indicating that the call is being
recorded.
Notes: the speakerphone state does not have
to be reset after recording to the line or playing
a message to the line. The baud rate is not set
before the StartPlay and StartRecord
commands. The baud rate is not reset after the
StopPlay and Stoprecord. Commands.
+VRX or VRX=0
Produce Periodic DCE Tone While Recording
+VRX=1 Disable Periodic DCE Tone Production
During Recording
+VSD Remote Silence-Detection Properties
+VSD= m,n Used in answering-machine mode.
Specifies the volume and duration
thresholds that determine whether the
remote device has hung up.
m options: Specifies the silence-detection level
0 Used current + VSM value; or, if current +VSM
value is 0, use 128.
127 Low Threshold (most sensitive)
128 Medium Threshold
129 High Threshold (least sensitive)
n options: Specifies the silence-detection duration
0 Disable
1-255 Detect n/ 10 seconds silence; n = 0-255
60 Default=6 seconds
+VSM Speech Compression Properties