Telenetics 56 - Manual (Page 191)

AT Commands
Page 183
Table A-32. +VNH Command Behavior
Command Response
Command No Carrier
Present
ATH ATZ DTR & D2
+VNH=0 Y Y Y Y
+VNH=1 N Y Y Y
+VNH=2 N N N Y
Notes:
Y= will hang-up; N= will not hang-up.
How +VNH is reset:
DTE uses +VNH command to change setting.
DTE issues another +FCLASS mode change without issuing another +VNH.
A hang-up event occurs (see this table).
DTE issues +VIP command.
Reporting Current or Selected Values
Command: +VNH?
Response:
Example:
0 For the default setting.
Reporting Supported Range of Parameter Values
Command: +VNH=?
Response: (
range)
Example: (0-2)
Result Codes
OK = 0-2.
ERROR Otherwise.
Voice Commands
+VIP - Voice Initialize All Parameters
This command causes the modem to initialize all voice parameters to their default
values.
Syntax +VIP
Result Codes
OK
ERROR If not in Voice Mode.
+VRX - Start Modem Receive (Record)
This command causes the modem to start the voice reception process.
Syntax +VRX
Result Codes
OK
ERROR If not in Voice Mode.