For Desk Phones Powered via PoE (Power over Ethernet): - Unplug the Ethernet cable from the back of the phone. - Wait 30 seconds. - Reconnect the Ethernet cable. - Allow 2–5 minutes for the phone to restart and reconnect. - Verify the phone is registered and the display is normal, then place a test call.

For Desk Phones Using an External Power Adapter: - Unplug the power adapter from the phone. - Wait 30 seconds. - Reconnect the power adapter. - Allow 2–5 minutes for the phone to restart and reconnect. - Verify the phone is registered and the display is normal, then place a test call.

Press and hold the Power button on the W56H handset.

Select Power Off and confirm.

Wait 30 seconds.

Press and hold the Power button again to turn it back on.

Allow 2–5 minutes for the handset to reconnect to the base station.

Verify the handset is registered and place a test call.

Power-Cycle All Voice Equipment: - Turn off all handsets and the base station. - Wait 30 seconds. - Power them back on. - Allow the handsets to search for and reconnect to the base station.

Test Calls: - Test both outbound and inbound calls to ensure functionality.

Full Handset Recovery (if calls still fail): - Perform a factory reset on the handset. - Locate the handset’s IPv4 address from its network/status menu. - Enter the IP address in a web browser on a computer connected to the same network to access the handset’s web interface. - Reconfigure or re-register the handset according to your system settings. - Save the settings and reboot the handset.