AudioCodes Mediant 800B User Manual page 1166

Parameter
Disconnect Call on Busy Tone
Detection
configure voip > gateway analog fxo-
setting > disc-on-bsy-tone-c
[DisconnectOnBusyTone]
Polarity (Current) Reversal for Call Release (Analog Interfaces) Parameters
configure voip > interface fxs-fxo >
default-linepolarity-state
[SetDefaultLinePolarityState]
Enable Polarity Reversal
configure voip > sip-definition
settings > polarity-rvrsl
[EnableReversalPolarity]
User's Manual

IP-to-ISDN calls are disconnected on detection of SIT
tones only in call alert state. If the call is in connected
state, the SIT does not disconnect the calls. Detection of
busy or reorder tones disconnects the IP-to-ISDN calls also
in call connected state.

For IP-to-CAS calls, detection of busy, reorder, or SIT
tones disconnect the calls in any call state.
Global parameter enabling call disconnection upon detection
of a busy tone.
You can also configure the functionality per specific calls,
using Tel Profiles (TelProfile_DisconnectOnBusyTone). For a
detailed description of the parameter and for configuring the
functionality in the Tel Profiles table, see Configuring Tel
Profiles on page 439.
Note: If the functionality is configured for a specific Tel Profile,
the settings of the global parameter is ignored for calls
associated with the Tel Profile.
Defines the FXO line polarity, required for DID signaling.

[0] = Positive line polarity

[1] = Negative line polarity

[2] = (Default) Auto - The device detects the polarity upon
power-up or upon insertion of the RJ-11 cable, and uses it
as a reference polarity.
Typically, if the RJ-11 cabling is connected correctly (without
crossing, Tip to Tip, Ring to Ring), the Tip line is positive
compared to the Ring line. In this case, set the parameter to 0.
With this configuration, the device assumes that the idle line
polarity is Tip line positive.
When the device receives a SIP INVITE, it checks the FXO
line polarity. If the polarity is "Reversed", it skips this FXO line
and goes to the next line.
Note:

For the parameter to take effect, a device reset is required.

To take advantage of this new feature, configure all FXO
lines as a single Trunk Group with ascending or
descending channel select mode, and configure routing
rules to route incoming INVITE messages to this Trunk
Group.

The parameter is applicable only to FXO interfaces.
Global parameter enabling the Line Polarity Reversal feature
for call release.
You can also configure the functionality per specific calls,
using Tel Profiles (TelProfile_EnableReversePolarity). For a
detailed description of the parameter and for configuring the
functionality in the Tel Profiles table, see Configuring Tel
Profiles on page 439.
Note:

The parameter is applicable to FXS and FXO interfaces.

If the functionality is configured for a specific Tel Profile,
1166
Mediant 800B Gateway & E-SBC
Description
Document #: LTRT-10298