AudioCodes E-SBC User Manual page 488

CHAPTER 19 Coders and Profiles
Parameter
Analog
'Enable Polarity Reversal'
polarity-rvrsl
[TelProfile_
EnableReversePolarity]
'Enable Current Disconnect'
current-disconnect
[TelProfile_
EnableCurrentDisconnect]
Mediant 1000 Gateway & E-SBC | User's Manual
Description
Note:
■ For more information on AGC, see
Control (AGC).
■ The corresponding global parameter is EnableAGC.
Enables the Polarity Reversal feature for call release.
■ [0] Disable (default)
■ [1] Enable = Enables polarity reversal:
✔
FXS Interfaces: The device changes the line
polarity on call answer and then changes it back on
call release.
✔
FXO Interfaces: The device sends a SIP 200 OK
response when polarity reversal signal is detected
(applicable only to one-stage dialing) and releases
a call when a second polarity reversal signal is
detected.
Note:
■ The parameter is applicable to FXS and FXO
interfaces.
■ The corresponding global parameter is
EnableReversalPolarity.
Enables call release upon detection of a Current
Disconnect signal.
■ [0] Disable (default)
■ [1] Enable = Enables the current disconnect service.
✔
FXO Interfaces: The device releases a call when a
current disconnect signal is detected on its port.
✔
FXS Interfaces: The device generates a 'Current
Disconnect Pulse' after the call is released from
the IP side.
Note:
■ The parameter is applicable to FXS and FXO
interfaces.
■ The current disconnect duration is configured by the
CurrentDisconnectDuration parameter.
■ The current disconnect threshold (FXO only) is
configured by the CurrentDisconnectDefaultThreshold
parameter.
■ The frequency at which the analog line voltage is
sampled is configured by the
TimeToSampleAnalogLineVoltage parameter.
■ The corresponding global parameter is
EnableCurrentDisconnect.
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