Hold the (or the volume keys) while booting the phone to enter the configuration menu.
: This clears any residual configurations that might be blocking the connection. Unplug the power/Ethernet. Hold the # key while plugging it back in. When "Configure Phone?" appears, select * for Yes . mitel-5320e-ip-phone-stuck-on-dhcp-discovery
: Mitel systems often require specific DHCP Options (like Option 43 or 125) to tell the phone where the MiVoice Business controller is located. If these aren't set correctly in your DHCP server, the phone may loop during discovery. Hold the (or the volume keys) while booting
: Mitel phones often operate on a specific Voice VLAN. If the switch port isn't configured to "tag" the voice traffic or if the DHCP server isn't listening on that specific VLAN, the discovery process will fail. Hold the # key while plugging it back in
: Confirm that your router or server has an active DHCP pool with available addresses. If the pool is full, the phone will wait indefinitely.
Navigate through the menu using the keys to find and select Yes .
: If DHCP continues to fail, you can manually assign an IP address to the phone.