Installation guide
Synapse Installation Guide Back to Contents
Troubleshooting 105
Power Failure Recovery Procedure
The Synapse system automatically recovers after a power failure. The following describes
the recovery process.
Allow about a minute for the Gateways and ATA to boot up when power returns after a
power failure. The power-up sequence for the Gateways and ATA 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, Gateway and ATA 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 “Reconnecting a Deskset to the System” on page 102 and
“Reconnecting a Gateway or ATA to the System” on page 104 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 Basic Settings” on page 29.
The Desksets also automatically restart and synchronize after an AC power
failure.
Some systems will take longer than others depending on the network topology.