AudioCodes Mediant 800B - Page 1083

Version 7.2 1083 Mediant 800B Gateway & E-SBC
User's Manual 72. Configuration Parameters Reference
Parameter Description
LAN Watchdog
[EnableLanWatchDog]
Enables the LAN watchdog feature. The LAN watchdog detects any
logical network failure.
 [0] Disable (default)

[1] Enable & Reset = Enables LAN watchdog. If the device detects
a network failure, the device resets.
 [2] Enable & No Reset = Enables LAN watchdog. If the device
detects a network failure, it does not undergo a reset.
The LAN watchdog periodically checks the device's overall
communication integrity by pinging the network. If the device detects
a communication failure lasting longer than three minutes, it performs
a self-test:

Test succeeds: The problem is due to a logical link failure (i.e., the
Ethernet cable has been disconnected on the remote switch) and
the following mechanisms are activated if enabled:

Busy Out (see the EnableBusyOut parameter)

Lifeline (see the LifeLineType parameter)
 Test fails: The device resets (if the parameter is set to [2]) to
overcome the internal communication error.
Note:
 For the parameter to take effect, a device reset is required.
 LAN watchdog is applicable only if the Ethernet connection is full
duplex.
[LifeLineType] Defines the condition(s) upon which the Lifeline analog (FXS) feature
is activated. The Lifeline feature can be activated upon a power
outage or network failure (i.e., loss of IP connectivity). Upon any of
these conditions, the Lifeline feature provides PSTN connectivity and
thus call continuity for the FXS phone users.
If the device is in Lifeline mode and the scenario that caused it to
enter Lifeline (e.g., power outage) no longer exists (e.g., power
returns), the device exists Lifeline and operates as normal.
 [0] = (Default) Lifeline is activated upon power outage.
 [1] = Lifeline is activated upon power outage.
 [2] = Lifeline is activated upon a power outage network failure
(logical link disconnection), or when the Trunk Group is in Busy
Out state (see the EnableBusyOut parameter).
The Lifeline (FXS) phone is connected to the following port:
 FXS Port 1
FXS Port 1 connects to the POTS (Lifeline) phone as well as to the
PSTN / PBX, using a splitter cable.
Note:
 For the parameter to take effect, a device reset is required.
 The parameter is applicable only to FXS interfaces.
 To enable Lifeline upon network failure, the LAN Watchdog
feature must be activated (see the EnableLANWatchDog
parameter).
 The number of supported Lifelines depends on the device’s
hardware configuration. For the combined FXS/FXO configuration,
one Lifeline is available; for the 12-FXS configuration, up to three
Lifelines are available.