Hello, Maybe i'm doing wrong. I want to manage different voIP vlans I've added voIP vlans in NAV Portadmin.conf (separated with comma) voice_vlans = <My first voIP ID>,<my other voIP vlan ID> When I activate VOIP to the interfaces directly in JunOS console (1) , It will create two separate configurations on the device: - Interface configuration with port-mode ACCESS and vlan XXXX (not the VOIP vlan) - a VOIP configuration with all "voIP" interfaces (command: show ethernet-switching-options voip ) However, NAV see this interface has a trunk port, with a native vlan YYYY and a trunk vlan corresponding to voIP vlan. When I want to change of vlan trunk configuration in Portadmin page, I have the following error: "Error editing trunk: Device raised RpcError: error: VOIP can only be configured on access ports error: configuration check-out failed" because Juniper doesn't allow VoIP setup on trunk ports. If I remove the voIP configuration on Juniper device, and keep NAV using trunks with a native vlan, the voIP phones are not working. Question is : How can we manage multiple VoIP vlans for Juniper with NAV ? It is possible to activate voIP on interface, by adding some button in portadmin page (for example) ? Regards, Ludovic Four IT Staff / Network manager Faculty of pharmacy University of Strasbourg - FRANCE (1) Depending on JunoS Version the command is - set ethernet-switching-options voip interface <interface number> vlan <voIP vlan ID> - set switch-options voip interface <interface number> vlan <voIP vlan ID>