Chapter 14: Limited Access During Failover - Avaya one-X 9640 User Manual

Chapter 14: Limited access during failover

One or more telephone system servers provide your phone with its connectivity, features, and functionality.
If a disconnect or switch from one server to another occurs, your phone goes into "failover" mode to keep
it operating while alternate server resources are established. Depending on the server your phone is on,
a Failover icon may appear on the top display line to notify you that failover is in effect.
Failover has different stages. For example, while your phone transitions to a new server it is in "limbo"
and functionality may be limited. Then when the alternate server is active, your phone assumes the
functionality available on that server, which may not be the same as your original server. When the original
server is restored, your phone transitions back (failback) and functionality may again be limited during the
transition. When your phone is back on the original server, normal functionality is restored. Failover and
failback are automatic; you have no control over failure mode.
Keep in mind that during failover certain features may not be available and telephone functionality may
be limited. Check the softkeys at the bottom of the display to determine the actions you can take during
failover; also try the Phone button to display the Avaya Menu for possible actions.
Important:
Do not log your telephone off during failover or until normal service is restored on your original telephone
server. Logging off during failover, during transition to or from an alternate server, or while your phone
is active on an alternate server may cause your phone to become inoperable.
The following conditions apply when your telephone is in failover mode:
• Messages like "Acquiring service" (if telephone registration has not completed), "Link recovery,"
"Limited phone service" (if the telephone is unable to log in to any of the servers), and "Calls may be
lost " may inform you of a failover situation.
• If you are on a call when failover occurs, that call will remain active. You cannot initiate new calls
while your phone transitions to the alternate server.
• Certain softkeys may not display and their related functions may be unavailable until transition to the
alternate server is complete.
• Call connection may take longer than usual.
• During the transition to a new server, any active conference calls, call transfers, and held calls may
be dropped. Incoming calls may not reach you; such calls may go to voice mail.
• Emergency calls may or may not work, depending on the stage of failover and the functionality
available on the alternate server.
• Once the transition to a new server has occurred, bridged call appearances are available. Despite
a "Log Bridged Calls" option setting of yes, bridged calls are not logged during failover but are
available once the phone transitions to the alternate server.
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