required.
EMS: Current Disconnect Duration
[CurrentDisconnectDuration]
Defines the duration (in msec) of the current disconnect
pulse.
The range is 200 to 1500. The default is 900.
Notes:
 This parameter is applicable for FXS and FXO
interfaces.
 The FXO interface detection window is 100 msec below
the parameter's value and 350 msec above the
parameter's value. For example, if this parameter is set
to 400 msec, then the detection window is 300 to 750
msec.
 For this parameter to take effect, a device reset is
required.
[CurrentDisconnectDefaultThreshold]
Defines the line voltage threshold at which a current
disconnect detection is considered.
The valid range is 0 to 20 Volts. The default value is 4
Volts.
Notes:
 This parameter is applicable only to FXO interfaces.
 For this parameter to take effect, a device reset is
required.
[TimeToSampleAnalogLineVoltage]
Defines the frequency at which the analog line voltage is
sampled (after offhook), for detection of the current
disconnect threshold.
The valid range is 100 to 2500 msec. The default value is
1000 msec.
Notes:
 This parameter is applicable only to FXO interfaces.
 For this parameter to take effect, a device reset is
required.
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