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Syn248 Installation and Configuration Guide Back to Contents
Troubleshooting 90
Power Failure Recovery Procedure
The Syn248 system automatically recovers after a power failure. The following describes
the recovery process.
Allow about a minute for the Gateway to boot up when power returns after a power
failure. The power-up sequence for the Gateway follows:
1. About 20 seconds after turning on power to the device, the POWER LED turns on.
2. When the device finds the network, Synchronizing momentarily appears, indicating
that the device is in the process of detecting and synchronizing with other system
devices.
3. Once the device has successfully finished synchronizing with the rest of the system,
Synchronized appears.
When AC power returns after a power failure, the system self-assigns a link-local address
to the Deskset beginning with number 169.254.
If the Deskset is set for automatic IP address configuration, it searches for the
DHCP server. If the DHCP server is found, it assigns an IP address.
If the Deskset is set with static IP addresses, the address does not change.
We recommend that you check each Deskset and Gateway to confirm that it has started
up properly.
If any of the system devices’ screens report Synch Failed or Synchronizing for more
than 10 minutes, see “Reintroducing a Deskset Into the System” on page 88 for recovery
methods from these states.
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The time and date may not be correct. The time and date are set using the
WebUI “System Settings” on page 30.
The Desksets also automatically restart and synchronize after an AC power
failure.
Some systems will take longer than others depending on the network topology.
91


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