Panasonic KX-NS1000 Feature Manual page 40

3.1.1 Backup Master Mode and Isolated Mode
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Only a KX-NS1000 PBX can be designated as the Backup Master unit. Other KX-NS series PBXs (e.g.,
KX-NS700) cannot be designated as the Backup Master unit. However, any KX-NS series PBX can function
in Isolated mode.
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The following options are available in Web Maintenance Console to recover from Isolated mode to Normal
mode:
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Recover immediately manually
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Recover manually by specifying a time or day to return
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Automatically detect a recovery to Normal mode
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Set a schedule for recovery (one time, weekly, monthly, etc.)
For details about recovering from Isolated mode, refer to the Installation Manual (® 8.4.2 One-look
Networking Survivability) and the PC Programming Manual (® 9.5.1 PBX Configuration—[1-1]
Configuration—Slot—Site Property—Main—Main—
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Recovering from Isolated mode to Normal mode can be performed automatically depending on system
settings. However, automatic recovery is not available if a Backup Master unit exists in the One-look
network. This limitation applies to the following recovery options:
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Recover manually by specifying a time or day to return
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Automatically detect a recovery to Normal mode
–
Set a schedule for recovery (one time, weekly, monthly, etc.)
For details, refer to the PC Programming Manual (® 9.5.1 PBX Configuration—[1-1]
Configuration—Slot—Site Property—Main—Main—
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When the Master unit recovers, extension and CO lines cannot be used because they are in suspended
mode. However, normal operation can be resumed after recovery if set to do so through system
programming. For details, refer to the PC Programming Manual (® 9.4 PBX Configuration—[1-1]
Configuration—Slot—System Property—Multisite—
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When operation switches modes (e.g., normal operation to Backup Master operation), service at all sites
is temporarily interrupted. For example, all active calls will be disconnected, including P2P calls.
In this case, all units will restart. Depending on the makeup of the network, it may take 15 minutes or more
for the system to come completely back online.
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Activation keys are copied and are available to the Backup Master unit or Isolated units for use in their
respective modes. However, trial activation keys will not be available. Copied activation keys are valid for
10 days, starting when the unit begins operation. When operation is returned to normal, this 10 day limit
is reset.
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During normal operation, system data is copied from the Master unit to all Slave units. System data includes
information such as extension settings, system speed dialing, time mode, etc.
System data is copied from the Master unit to the designated Backup Master unit as soon as Backup Master
operation is enabled through system programming.
System data is copied from the Master unit to Slave units whenever system data is saved. Data is saved
when the programmer clicks the save button in Web Maintenance Console and when the programmer logs
out of Web Maintenance Console. Data is also saved automatically every 30 minutes.
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During Backup Master operation and Isolated operation, system data can be changed. However, the
changed data is not copied back to the Master unit (or Backup Master unit) when normal operation resumes.
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Unified Messaging data is not copied to the Backup Master unit or other Slave units. For details about
Unified Messaging survivability features, see "20.1.1 UM Group Failover".
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SRAM data such as SMDR data, the error log, timed reminders, etc., is not copied to the Backup Master
unit or other Slave units. While the Master unit (or Backup Master unit) is offline, the SRAM data is
maintained so that when normal operation resumes, the SRAM is in the same state it was in when the
Master unit (or Backup Master unit) went offline.
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During Backup Master operation or Isolated operation, data stored in the SRAM, such as SMDR data, is
collected at the Backup Master unit (in Backup Master mode) or Isolated unit (in Isolated mode). However,
this data is not copied back to the Master unit (or Backup Master unit) when normal operation resumes. If
it is necessary to output this data, connect a printer to the appropriate unit and print out the necessary data.
Outputting the SRAM data must be done in Backup Master mode for the Backup Master unit or in Isolated
mode for an Isolated unit.
40 Feature Manual
Normal Mode Auto Recovery).
Normal Mode Auto Recovery).
Master Suspend if Backup Master Detected).
Document Version 2016-03