Pim Configuration Data; Entering Sls Mode; Unregistered State - Avaya G450 Manual

The required Communication Manager translations for SLS include fields on the Station and
Media Gateway forms. See
more information about the information types and how to administer Communication Manager
for SLS.

PIM configuration data

SLS also requires PIM configuration data, some of which the G450 extracts from the Avaya
Communication Manager translations. PIM aggregates the required data and copies the
provisioning data over a secure communication path to non-volatile RAM (NVRAM) on the
G450. After the initial data collection, PIM retains a copy of the data set for each G450. This set
is compared with subsequent data sets to determine if anything has changed:
If the data set changes, the newer data set is pushed down to the media gateway
●
If the data set does not change, the data set in NVRAM remains unchanged
●
Users can schedule when to collect and push data, perform scheduled and manual backups,
and enable and disable SLS, as well as display (but not change) the data to ensure correct
information. See
If PIM is unavailable, the SLS data set can be manually configured in the G450 CLI. For
information on configuring SLS, both manually and via PIM, see

Entering SLS mode

When SLS is enabled, the MGC list displays a fifth element called SLS. This element is always
past the Transition Point. After the Link Recovery search concludes for the primary MGC list
(entries above the Transition Point), it searches the alternate MGC list (entries below the
Transition Point), ending with SLS, the last choice for the G450.
When the Link Recovery search settles on the SLS entry in the MGC list, the G450 registers
with SLS (resident on the G450) for its call control.
SLS transitions between four possible SLS states: Unregistered, Setup, Registered, and
Teardown.

Unregistered state

This is the normal state in which SLS waits for an H.248 registration request from the G450.
When SLS receives the request, it registers the G450 and transitions to the Setup state.
Configuring Communication Manager for SLS
Using PIM to manage SLS administration on the gateway
on page 133 for
on page 138.
Configuring SLS on page 132.
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