Planet IGS-5225-16T4S User Manual page 314

 Application Type
 Policy
 TAG
3. Location Identification
4. Extended Power via MDI - PSE
5. Extended Power via MDI - PD
6. Inventory
7. Reserved
Application Type indicating the primary function of the application(s) defined for
this network policy, advertised by an Endpoint or Network Connectivity Device.
The possible application types are shown below.

Voice - for use by dedicated IP Telephony handsets and other similar
appliances supporting interactive voice services. These devices are typically
deployed on a separate VLAN for ease of deployment and enhanced
security by isolation from data applications.

Voice Signaling - for use in network topologies that require a different policy
for the voice signaling than for the voice media.

Guest Voice - to support a separate limited feature-set voice service for
guest users and visitors with their own IP Telephony handsets and other
similar appliances supporting interactive voice services.

Guest Voice Signaling - for use in network topologies that require a different
policy for the guest voice signaling than for the guest voice media.

Softphone Voice - for use by softphone applications on typical data centric
devices, such as PCs or laptops.

Video Conferencing - for use by dedicated Video Conferencing equipment
and other similar appliances supporting real-time interactive video/audio
services.

Streaming Video - for use by broadcast or multicast based video content
distribution and other similar applications supporting streaming video
services that require specific network policy treatment. Video applications
relying on TCP with buffering would not be an intended use of this
application type.

Video Signaling - for use in network topologies that require a separate
policy for the video signaling than for the video media.
Policy indicates that an Endpoint Device wants to explicitly advertise that the
policy is required by the device. Can be either Defined or Unknown

Unknown: The network policy for the specified application type is currently
unknown.

Defined: The network policy is defined.
TAG is indicating whether the specified application type is using a tagged or an
untagged VLAN. Can be Tagged or Untagged

Untagged: The device is using an untagged frame format and as such does
not include a tag header as defined by IEEE 802.1Q-2003.
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User's Manual of IGS-5225 series