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• Activate WMS network between the PBXs
• Set failover PBX in WMS -> Users -> PBXs:
  • Click Failover column near the PBX you wish to set up failover for
  • Failover setup dialog opens
  • Select the failover PBX from the list
  • Click Ok
• Make all the configuration on the main PBX (devices, Dialplan, call groups etc.)
• Disable devices sync from WMP on Failover PBX (available starting from WMS version 3.88.41514.30): add “disable_sync_portal=1”, “disable_sync_manual=1” to the config file /rw2/etc/pbx/device_sync.conf
• Make replication for main Main PBX configuration:
  • Access the failover PBX via SSH as root
  • Run shell script sync_pbx
  • Select 1 (Configure)

  • Enter IP

    of the Main PBX

    or PBX domain of the Main PBX
    

    Note
    Note: Starting from WMS 5.04 Beta, it is possible to enter remote PBX domain name instead of PBX IP.

    
    

  • Enter the admin password of the Main PBX
• Set failover PBX as secondary DNS server on unsupported devices

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Current limitations 

• No support for failover mode via /rw2/etc/phone_failover.conf

• No support for failover mode via secondary DNS Configuration
• No Full TLS Support (check the table provided in the Chapter “Device configuration and switching timeout”)
• It’s necessary to configure separate DHCP server in the local network where phones and gateways are connected
• Changes to configurations of the PBX which synchronizes its configuration from another one will be lost after each sync, Admin should apply all changes only on the source PBX
• No notification present on phone’s display when switching to backup PBX in failover scheme
• Unsupported devices (see the chapter “Failover by DNS”):
  • W-AIR
  • W04BRI
  • W01GSM
  • W01FXS (pre 2015)
  • Outgoing SIP trunks
  • iOS clients
  • W-PA
• No XML Browser-based services like history / phonebooks when connected to failover PBX
• Call group with ‘Call All 32’ strategy – calls do not work for failover user
• Call through remote PBXs of WMS network does not work if Main PBX is unavailable
• Continuity feature does not work after switch to failover PBX (invalid for WMS 5.0, refer to the chapter Support of user features)
• Pre-answer services do not work after switch to failover PBX (invalid for WMS 5.0, refer to the chapter Support of user features)
• Call to the failover WP480 2015-2016 device can not be completed normally
• Return from semi-attended transfer is not performed
  • after transfer from remote user to failover user
  • after transfer from failover user to remote user
• BLF presence status of the local user is unavailable for failover user; call can’t be picked up via BLF key
• BLF presence status of the failover user is unavailable for local user; call can’t be picked up via BLF key
• Impossible to perform calls from Kite to failover user via WMS network Server PBX in case main PBX is unavailable
• Email notifications are unavailable for failover user; user features are not available on failover PBX (invalid for WMS 5.0, refer to the chapter Support of user features)
• Login/logout via 99 service is restricted for failover user
• Language and region settings are not synced during sync_pbx script execution

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• Run the following command on a Failover PBX to copy user files (which are encrypted) from a Main PBX: 

  Code Block
  scp admin@<pbx A>:/etc/user.d/*.lua /etc/user.d/ or scp -P 2222 admin@<pbx A>:/etc/user.d/*.lua /etc/user.d/ - for Cloud

   where <PBX A> is a domain name of a Main PBX.

• Then you need to set an owner of the copied files by running the command on the Failover PBX:

  Code Block
  chown wms:wms /etc/user.d/*lua

  
  

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