Avaya G430 - SLS Interaction with Specific Branch Gateway Features

Teardown state
SLS transitions to the Teardown state whenever the following events occur:
• The Branch Gateway administrator uses the set sls disable command from the
Branch Gateway CLI or manual MIB browser using the SNMP read/write attribute
avSurvAdminState.
• The Branch Gateway closes the SLS socket after maintenance determines that it has
completed an H.248 registration with the primary MGC.
• SLS determines that it needs to unregister with the Branch Gateway due to internal error
conditions.
Related topics:
Teardown state process on page 109
Teardown state process
1. Tears down endpoint objects.
2. Sends unregistration requests to IP endpoints that are not on active calls. IP
endpoints lose registration with SLS and display the discovered IP address during
re-registration with an MGC.
3. Closes the H.323 Gatekeeper socket.
After Teardown is complete, SLS transitions to the Unregistered state and starts searching at
the top of the MGC list for a controller.
SLS interaction with specific Branch Gateway features
SLS interacts differently with the various Branch Gateway features.
Related topics:
Direct Inward Dialing in SLS mode on page 110
Multiple call appearances in SLS mode on page 110
Hold in SLS mode on page 111
DCP and IP phones on page 111
Using the Flash button on page 112
Using the switchhook button on page 112
Call Transfer in SLS mode on page 113
Using contact closure in SLS mode on page 115
Administering IP Softphone in SLS mode on page 116
Standard Local Survivability (SLS)
Administering Avaya G430 Branch Gateway October 2013 109