: If DHCP continues to fail, you can manually assign an IP address to the phone.
When a Mitel 5320e IP phone Go to product viewer dialog for this item. mitel-5320e-ip-phone-stuck-on-dhcp-discovery
Hold the (or the volume keys) while booting the phone to enter the configuration menu. : If DHCP continues to fail, you can
: 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. : Mitel phones often operate on a specific Voice VLAN
: 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.