User's Manual 1254 Document #: LTRT-10632
Mediant 800B Gateway & E-SBC
Parameter Description
[BrokenConnectionDuringSilence] Enables the generation of the BrokenConnection event during
a silence period if the channel’s NoOp feature is enabled
(using the parameter NoOpEnable) and if the channel stops
receiving NoOp RTP packets.
 [0] Disable (default)

Enable
Trunk Alarm Call Disconnect
Timeout
trk-alrm-call-disc-to
[TrunkAlarmCallDisconnectTimeout]
Defines the duration (in seconds) to wait after a E1/T1/BRI
trunk "Red" alarm (LOS / LOF) is raised, before the device
disconnects the SIP call. If this timeout expires and the alarm
is still raised, the device sends a SIP BYE message to
terminate the call. If the alarm is cleared before this timeout
expires, the call is not terminated, but continues as normal.
The range is 1 to 3600. The default is 0 (20 for BRI, 20 for E1
and 40 for T1).
Disconnect Call on Busy Tone
Detection (ISDN)
disc-on-bsy-tone-i
[ISDNDisconnectOnBusyTone]
Determines whether a call is disconnected upon detection of a
busy tone (for ISDN).
 [0] Disable = (Default) Do not disconnect call upon
detection of busy tone.
 [1] Enable = Disconnect call upon detection of busy tone.
Note:
 The parameter is applicable only to ISDN protocols.
 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-
in call connected state.
 For IP-to-CAS calls, detection of busy, reorder, or SIT
tones disconnect the calls in any call state.
Disconnect Call on Busy Tone
Detection
configure voip > gateway analog fxo-
setting > disc-on-bsy-tone-c
[DisconnectOnBusyTone]
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 473.
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.
Polarity (Current) Reversal for Call Release (Analog Interfaces) Parameters
configure voip > interface fxs-fxo >
default-linepolarity-state
[SetDefaultLinePolarityState]
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.
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