Power Failure Recovery Procedure - AT&T Synapse Installation Manual

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, as shown in Figure 157.
3. Once the device has successfully finished synchronizing with the rest of the system,
Synchronized appears, as shown in Figure 158.
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.

The time and date may not be correct. The time and date are set in System Basic
Settings on the WebUI.
The Desksets also automatically restart and synchronize after an AC power failure.
Troubleshooting
Synapse Installation Guide
155
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Figure 157. Synchronizing
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Figure 158. Synchronized