Kilvington IP Phones The IT and Marketing teams locate at Kilvington Drive use NEC DT800 IP handsets as desk phones  These phones are connected to the core switch stack in the Kilvington comms rooms and are configured to use VLAN mode on both the LAN and PC ports. The phones are provided with an IP address via the DHCP server located on pbr-wsus-kl1. The reason the handsets operate in VLAN mode is due to a bug with Cisco SG300 switches which causes the core stack to reboot in certain scenarios when using LLDP.  Configuring an NEC Handset to use VLAN Mode at Kilvington Drive Before following these steps ensure that the associated switch port has been tagged for VLANS 100 and 134. Press the Menu key. (Note if the phone is first booting up you may have to wait 20 seconds before you can get into setup.) If the phone is already booted up you will have to press the Menu key and dial (0) on the key pad. When prompted for credentials, enter the credentials below and press the OK key: User name: ADMIN Password:  6633222 Press 1 to get into Network Settings and then 6 for Advanced Settings Press 1 for LAN Port Settings and 2 for VLAN Mode Select Enable and press the OK key: Press 3 for VLAN ID Enter 100 and press the OK key Press the Exit key Press 2 for PC Port Settings and 2 for VLAN Mode Select Enable and press the OK key: Press 3 for VLAN ID Enter 134 and press the OK key Press the Exit key Keep pressing Exit and then select Save when it is displayed. The handset will reboot. The phone has now been configured to use VLAN mode with the correct VLAN IDs.