B222s User’s Guide
83
C
H A P T E R
9
Quality of Service (QoS)
9.1 Overview
This chapter discusses the LTE Device’s QoS screens. Use these screens to set up your LTE Device
to use QoS for traffic management.
Quality of Service (QoS) refers to both a network’s ability to deliver data with minimum delay, and
the networking methods used to control the use of bandwidth. QoS allows the LTE Device to group
and prioritize application traffic and fine-tune network performance.
Without QoS, all traffic data is equally likely to be dropped when the network is congested. This can
cause a reduction in network performance and make the network inadequate for time-critical
application such as video-on-demand.
The LTE Device assigns each packet a priority and then queues the packet accordingly. Packets
assigned a high priority are processed more quickly than those with low priority if there is
congestion, allowing time-sensitive applications to flow more smoothly. Time-sensitive applications
include both those that require a low level of latency (delay) and a low level of jitter (variations in
delay) such as Internet gaming, and those for which jitter alone is a problem such as Internet radio
or streaming video.
Note: The LTE Device has built-in configurations for Voice over IP (IP). The Quality of
Service (QoS) feature does not affect VoIP traffic.
• See
Section 9.6 on page 92
for advanced technical information on SIP.
9.1.1 What You Can Do in this Chapter
• Use the General screen to enable QoS, set the bandwidth, and allow the LTE Device to
automatically assign priority to upstream traffic according to the IEEE 802.1p priority level, IP
precedence or packet length (
Section 9.2 on page 84
).
• Use the Queue Setup screen to configure QoS queue assignment (
Section 9.3 on page 86
).
• Use the Class Setup screen to set up classifiers to sort traffic into different flows and assign
priority and define actions to be performed for a classified traffic flow (
Section 9.4 on page 87
).
• Use the Monitor screen to view the LTE Device’s QoS-related packet statistics (
Section 9.5 on
page 92
).
9.1.2 What You Need to Know
The following terms and concepts may help as you read this chapter.
Summary of Contents for B222s
Page 4: ...Contents Overview B222s User s Guide 4 ...
Page 12: ...Table of Contents B222s User s Guide 12 ...
Page 13: ...13 PART I User s Guide ...
Page 14: ...14 ...
Page 28: ...28 ...
Page 78: ...Chapter 7 Routing B222s User s Guide 78 ...
Page 82: ...Chapter 8 DNS Route B222s User s Guide 82 ...
Page 102: ...Chapter 10 Network Address Translation NAT B222s User s Guide 102 ...
Page 114: ...Chapter 12 Firewall B222s User s Guide 114 ...
Page 120: ...Chapter 14 Parental Control B222s User s Guide 120 ...
Page 125: ...Chapter 15 VoIP B222s User s Guide 125 ...
Page 144: ...Chapter 15 VoIP B222s User s Guide 144 ...
Page 154: ...Chapter 17 Traffic Status B222s User s Guide 154 ...
Page 156: ...Chapter 18 User Account B222s User s Guide 156 ...
Page 170: ...Chapter 24 Backup Restore B222s User s Guide 170 ...
Page 172: ...Chapter 25 Diagnostic B222s User s Guide 172 ...
Page 218: ...Appendix B Setting Up Your Computer s IP Address B222s User s Guide 218 ...
Page 228: ...Appendix C Pop up Windows JavaScript and Java Permissions B222s User s Guide 228 ...
Page 252: ...Appendix E Common Services B222s User s Guide 252 ...