Avaya G430 Manual page 108

Standard Local Survivability (SLS)
SLS transitions between four possible SLS states: Unregistered, Setup, Registered, and
Teardown.
Related topics:
Unregistered state
Setup state process
Registered state process
Teardown state
Unregistered state
This is the normal state in which SLS waits for an H.248 registration request from the Branch
Gateway. When SLS receives the request, it registers the Branch Gateway and transitions to
the Setup state.
Setup state process
In this transitional state, SLS performs the following activities:
1. Checks for proper provisioning data. If there is insufficient provisioning, the
2. Initializes SLS components, such as Gatekeeper data (for example, IP endpoint's
3. Registers with the Branch Gateway.
4. Creates the H.323 Gatekeeper socket after successful registration.
When Setup is complete, SLS transitions to the Registered state.
Registered state process
SLS can only process calls while it is in the Registered state in which it performs the following:
1. Constructs endpoint objects based on board insertion and IP registration.
2. Tears down endpoint objects based on board removal and IP unregistration.
3. Handles registration requests from H.323 endpoints that properly authenticate by
4. Handles stimuli from all interfaces to establish and remove calls.
SLS remains in the Registered state as long as the socket to SLS is open.
108 Administering Avaya G430 Branch Gateway
on page 108
on page 108
on page 108
on page 109
registration request is denied, and SLS returns to the Unregistered state.
E.164 addresses and passwords), dial plan, and ARS routing.
using their extension number as a 'terminal alias', and the password as the
registration encryption key.
Comments? infodev@avaya.com
October 2013