Topic: IP Phone and PDU are ignored during snmp discovery and inventory

Dear all
I am using GLPI 9.3 with Fusion Inventory plugin. Trying to add all my snmp devices and network swicthes..
I have administred the discovery and the inventory for all the specific VLAN.
On the inventory side, I can see all the snmp swicth as a network equipment, snmp printer as printer. My problem is that I can't see my IP PHone and PDU (snmp activated and tested with snmpB and MIB Browser agent). I can see theses Phone (@IP, @MAC...) on the ignored equipment during import
Any help on how may I fix this.
Thanks and Regards