Cytracom's Active Geo-redundancy (AGR) ensures industry-leading availability and uptime by connecting users to multiple data centers simultaneously. This means no service-impacting maintenance windows or downtime due to failover delays will occur. 

Active vs. Passive Geo-Redundancy

  • Active: Cytracom architecture by which phones are actively connected to multiple data centers at the same time
  • Passive: A legacy, industry-wide strategy for managing a system failover

How do I know if my clients’ devices are configured for Active Geo-Redundancy?

  • Log in at
  • Click on PBX
  • Click on Extensions
  • Choose the extension
  • Click on the box to the right labelled CONNECTED to see the Geo-Redundancy mode:
    • Active - AGR
    • Passive - Legacy


The device pictured above is currently showing as connected (registered) and in an active Geo Redundancy mode which indicates that it is actively connected to a primary and a secondary data center.

If the device is not showing Active Geo-Redundancy, what do I need to do?

  • Ensure the devices are either Cytracom’s D2 and Grandstream’s GXP series, because they have the capability to be simultaneously registered to two SIP proxies (other devices will not populate with the Geo-Redundant state)
  • Check for the latest firmware
  • Ensure the firewall is configured correctly
  • Reboot the device (unplug and plug it back in to power cycle or click Reboot Device(s))
  • Check the extension in the portal for the Geo-Redundancy active state

Email for further assistance.

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