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DWR-980 Wireless AC1200 4G LTE Router
with VDSL2 Support, Gigabit Ethernet Ports,
2 FXS Ports, and USB Port
User Manual
Parameter
QoS class
For the ATM section only.
A class of traffic for this connection.
UBR (Unspecified Bit Rate): The UBR service is used for
•
applications that allow various delays and losses of packets.
It is appropriate to use the UBR service for text/data/image
transfer applications, as well as messaging, distribution,
retrieval, and remote terminal applications.
UBR with PCR (Unspecified Bit Rate with Peak Cell
•
Rate): The UBR service is used for applications that allow
various delays and losses of packets. The Peak Cell Rate is a
determining factor in how often cells are sent in an effort to
minimize lag or jitter caused by traffic inconsistencies.
When you select this value from the drop-down list, the
Peak cell rate field is displayed. Specify a required value
(in cells per second).
CBR (Constant Bit Rate): This service is used for
•
applications that require a constant data rate. It is mostly
used for transferring uncompressed audio and video, e.g.
videoconferencing,
audio/video distribution (television, distance education, e-
shops), and retrieval (video-on demand, audio libraries).
When you select this value from the drop-down list, the
Peak cell rate field is displayed. Specify a required value
(in cells per second).
Non Realtime VBR (Non-Real-time Variable Bit Rate):
•
This service can be used for transferring data that have
critical response-time requirements, e.g. air ticket booking,
bank transactions, and process monitoring. When you select
this value from the drop-down list, the Peak cell rate,
Sustainable cell rate, and Maximum burst size fields
are displayed. Specify required values.
Realtime VBR (Real-time Variable Bit Rate): This service
•
is used for delay-sensitive applications such as real time
video. The Rt-VBR provides higher network flexibility than
the CBR service. When you select this value from the drop-
down list, the Peak cell rate, Sustainable cell rate, and
Maximum burst size fields are displayed. Specify
required values.
Page 142 of 372
Configuring via Web-based Interface
Description
interactive
audio
(telephony),
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