Failover/Failback Behavior; System Performance; Telephone Behavior During Failover - Avaya 9608 Administrator's Manual

System Failover and Survivability
ListOfOneTouchDialData
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ListOfButtonAssignments
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SoftMenuKeyList
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DialPlanData
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ListOfSpeedDialData
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ListOfMaintenanceData
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ListOfTimers
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VMONInfo
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ListOfRingerOnOffData
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ListOfNumberFormatRules - applies only when registered to a Session Manager (SM)
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ListOfIdentities - only when registered to a SM
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MWExt - applies only when registered to an SM
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VMNumber - applies only when registered to an SM
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If the getAllEndpointConfiguration request fails, the phone does not continue with the other
PPM requests. In this case the getContactList request doesn't occur causing no contacts and no
"New" softkey to be displayed in the Contact list.

Failover/failback behavior

System performance

The survivability characteristics of the system as a whole are dependant on the configuration
and behaviors of all the SIP network elements such as phones and proxy servers as well as the
traditional network elements like routers and DNS servers. The endpoint detects a failure within
approximately 90 seconds of the time the failure occurs when TCP or TLS connections are
used. Once a failure has been detected, the endpoint completes its selection of an 'Active'
controller within approximately 5 seconds.
With simultaneous registration, available in a multiple SM environment with SIP software
Release 2.6, both failover/failback transition time and behavior is minimized.

Telephone behavior during failover

During failover, 9600 Series SIP IP Deskphones will:
Locate multiple controller addresses in priority order,
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Detect the availability of each controller,
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150 Deskphone SIP 9608, 9611G, 9621G, 9641G Administrator Guide Release 6.0.1