Westermo TDW-33 - Manual (Page 35)

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+VRN – Ringback Never Appeared Timer
Supported by: TDW-33 TD-36 TD-36 485 TR-36 TR-36B
Description:
This command sets the length of the time the modem will wait between ringbacks during
call originating before the modem can assume that the remote staion has gone off hook.
Syntax
+VRN=<n>
+VRN?
+VRN=?
Parameters
<n>
Decimal number 0 specifying the time period that the modem will wait for Ringback
during call origination.
A value of 0 forces the modem to report the OK result code. All other values give
ERROR as a result code.
S register: None
+VTS – Send Voice Tone(s)
Supported by: TDW-33 TD-36 TD-36 485 TR-36 TR-36B
Description:
This command causes the modem to send DTMF digits.
Syntax
+VTS=[<freq1>,<freq2>,<dur>]
+VTS=?
Parameters
freq1 (200-3000)
freq2 (200-3000)
dur (0-255)
S register: None