Related Links
User interface in failover/failback on page 135
User experience during failover transition on page 135
User experience during stable failover on page 137
User experience during failback on page 138
User interface failover operation for features on page 139
User interface in failover/failback
• Failover (F/O) transition - Connection to SES/SM failed, the phone detects F/O and blocks new
invites while the phone is in transition.
• Stable in F/O where the non-primary proxy is the active controller.
• Fail Back (F/B) transition to normal - The phone detects that the primary server is up,
regardless if the secondary is up. New invites are blocked while the phone is in transition. The
phone is in a stable Normal mode with SES/SM as the active controller. Any cached changes
(for example, to Contacts or other Avaya Menu options and settings) are updated to the PPM
once the phone is registered back to the primary controller.
Related Links
About the user interface/failover experience on page 134
User experience during failover transition
SIP software Release 6.0 expanded deskphone reliability during the transition from one controller to
another.
Related Links
About the user interface/failover experience on page 134
Failover to a secondary controller for alternate registration (SES F/O to SM to a non-AST
controller) on page 135
Moving subscriptions from one SM to another SM/BSM (Branch System Manager) due to failover on
page 136
Failover to a secondary controller for alternate registration (SES F/O to SM
to a non-AST controller)
Transition is comprised of the following conditions:
• Limbo - The phone has lost its connection to its primary controller, but has not yet detected this
condition regardless of whether a user is on a call or not.
• Acquiring Services - The phone has detected a lost connection to the primary controller and
displays an Acquiring Services Screen if the phone is idle.
• Call Preservation - During an active call, the phone has detected a lost connection to the
primary controller and displays a Call Preservation screen.
About the user interface/failover experience
August 2015 Administering Avaya 9601/9608/9611G/9621G/9641G/9641GS IP Deskphones SIP 135
Comments on this document? infodev@avaya.com
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