AudioCodes Mediant 800B MSBR User Manual page 786

Parameter
Web: Enable LAN Watchdog
[EnableLanWatchDog]
[LifeLineType]
User's Manual
Enables the LAN watchdog feature, which 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 it detects a
communication failure for more than three minutes, the device
performs a self test:

Test succeeds: The problem is due to a logical link failure (i.e.,
Ethernet cable disconnected on the remote switch) and the
following mechanisms are activated if enabled:

Busy Out mechanism (see the EnableBusyOut parameter)

Lifeline mechanism (configured by the LifeLineType
parameter)

Test fails: The device resets (if this parameter is set to [2]) to
overcome the internal communication error.
Notes:

For this parameter to take effect, a device reset is required.

LAN watchdog is applicable only if the Ethernet connection is
full duplex.
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.
Notes:

For this parameter to take effect, a device reset is required.

This 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.

For information on Lifeline cabling, refer to the Installation
786
Mediant 800B MSBR
Description
Document #: LTRT-12813