OPTICAL SYSTEMS DESIGN
DOC ID: 10120001
OSD2524 OPERATOR MANUAL
PAGE 169
ID for the policy. This is auto generated and shall be used when selecting the policies that shall be
mapped to the specific interfaces.
Application Type
Intended use of the application types:
1.
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.
2.
Voice Signalling
(conditional) - for use in network topologies that require a different policy for the
voice signalling than for the voice media. This application type should not be advertised if all the same
network policies apply as those advertised in the
Voice
application policy.
3.
Guest Voice
- 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.
4.
Guest Voice Signalling
(conditional) - for use in network topologies that require a different policy for
the guest voice signalling than for the guest voice media. This application type should not be advertised if
all the same network policies apply as those advertised in the
Guest Voice
application policy.
5.
Softphone Voice
- for use by softphone applications on typical data centric devices, such as PCs or
laptops. This class of endpoints frequently does not support multiple VLANs, if at all, and are typically
configured to use an 'untagged' VLAN or a single 'tagged' data specific VLAN. When a network policy is
defined for use with an 'untagged' VLAN (see Tagged flag below), then the L2 priority field is ignored
and only the DSCP value has relevance.
6.
Video Conferencing
- for use by dedicated Video Conferencing equipment and other similar
appliances supporting real-time interactive video/audio services.
7.
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.
8.
Video Signalling
(conditional) - for use in network topologies that require a separate policy for the
video signalling than for the video media. This application type should not be advertised if all the same
network policies apply as those advertised in the
Video Conferencing
application policy.
Tag
Tag
indicating whether the specified application type is using a 'tagged' or an 'untagged' VLAN.
Untagged
indicates that the device is using an untagged frame format and as such does not include a tag
header as defined by IEEE 802.1Q-2003. In this case, both the VLAN ID and the Layer 2 priority fields
are ignored and only the DSCP value has relevance.
Tagged
indicates that the device is using the IEEE 802.1Q tagged frame format, and that both the VLAN
ID and the Layer 2 priority values are being used, as well as the DSCP value. The tagged format includes
an additional field, known as the tag header. The tagged frame format also includes priority tagged
frames as defined by IEEE 802.1Q-2003.
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