316 Configuring Device InformationThere are two operational modes for IP Phones:• IP phones are configured with VLAN-mode as enabled, ensuring that tagged packets are used for allcommunications.• If the IP phone’s VLAN-mode is disabled, the phone uses untagged packets. The phone uses untaggedpackets while retrieving the initial IP address through DHCP. The phone eventually use the Voice VLANand start sending tagged packets.This section contains the following topics:• Defining Voice VLAN Properties Page• Defining Voice VLAN Port Settings• Defining OUIsDefining Voice VLAN Global ParametersThe Voice VLAN Global Parameters page contains parameters that apply to all Voice VLANs on thedevice.To open the Voice VLAN Global Parameters page, click Switch→ Voice VLAN → Global Parametersin the tree view.Figure 7-48. Voice VLAN Global Parameters• Voice VLAN Status — Indicates if Voice VLAN is enabled on the device. The possible field values are:– Enable — Enables Voice VLAN on the device.– Disable — Disables Voice VLAN on the device. This is the default value.• Voice VLAN ID — Defines the Voice VLAN ID number.
