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HA PREREQUISITES
Prerequisites
The two UCM used for High Availability deployment must be the same model and use the same firmware
version to ensure proper sync-up on the configuration and data.
Connecting UCM for HA Setup
The two UCM in High Availability setup must be deployed in the same location and connected directly to
each other via heartbeat port on each UCM.
• Connect a straight-through Ethernet cable between the heartbeat port on the primary UCM and
secondary UCM.
• For each UCM, connect its WAN or LAN port to the uplink network device (such as a switch or
router).
• For FXO port, an RJ11 telephone adapter is required to split the PSTN line connection into two
ports for each UCM’s FXO port to connect to. The same FXO port must be used on each UCM
when connecting to the adapter.
Network Configuration
Before enabling High Availability feature on the two UCM, the system admin must configure each UCM with
proper network settings.
Notes:
• The network “Method” on the UCM must be set to “Switch” or “Router”.
• The IPv4 address configured on the UCM must be static IP. It can be configured under UCM web
UI→Network Settings→Basic Settings.
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