Product data

USRobotics
Command Reference
Voice Commands - 139
Defined Values
<interval> Decimal number (0-255) specifying the silence interval time in
units of 0.10 second between the end of one ring interval and the
start of the next ring interval. A value of 0 forces the modem to
report the OK result code immediately after the first Ringback.
The range is 0.01 to 60.0 seconds for <interval> = 1 to 255.
Reporting Current or Selected Values
Command: +VRA?
Response: +VRA: <interval>
Example: +VRA: 50 (0.5 seconds) For the default setting.
Reporting Supported Range of Parameter Values
Command: +VRA=?
Response: +VRA: (<interval> range)
Example: +VRA: (0-255)
Result Codes
OK <interval> = 0-255
ERROR Otherwise, or if not in Voice Mode.
+VRN - Ringback Never Appeared Timer
This command sets the length of time the modem will wait between ringbacks
during call origination before the modem can assume that the remote station has
gone off hook.
Syntax
+VRN=<interval>
Defined Values
<interval> Decimal number (0-60) specifying the time period, in units of 1.0
second, that the modem will wait for Ringback during call
origination. A value of 0 forces the modem to report the OK result
code immediately after dialing. The range is 1 to 60 seconds for
<interval> = 1 to 60.
Reporting Current or Selected Values
Command: +VRN?
Response: +VRN: <interval>