Data Center Resiliency

Data Center Resiliency ensures that minimum basic call functions remain available in the event of a server shutdown or Wide area network (WAN) outage.

The following phones support Data Center Resiliency:
  • VVX 201, 300/310, 301/311, 400/410, 401/411, 500/501, and 600/601 business media phones
  • VVX 250, 350, and 450 business IP phones
  • SoundStructure VoIP Interface using Polycom UC Software 5.1.1 or later

Phones you register with Skype for Business on-premises are enabled with this feature by default and no additional configuration is required.

In the event of an unplanned server shutdown or outage, phone behavior changes to the following:
  • The phone displays a scrolling banner message 'Limited functionality due to outage'.
  • Your presence status displays as 'Unknown'.
  • The presence status of your contacts displays as 'Unknown'.
  • You cannot change your presence status.
  • You cannot add or delete Skype for Business contacts.
  • Phones in the locked state display a message on the Sign In menu 'Limited functionality due to outage'.
  • You can access current Call Forwarding settings in read-only mode.