X2002 User’s Guide
167
C
H A P T E R
8
QoS
8.1 Overview
This chapter shows you how to configure the X2002’s Quality of Service (QoS)
settings in the
Configuration > PBX > Server Configuration > QoS
screen.
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. 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 applications such as VoIP.
The following problems can occur on a congested network with poor QoS settings:
•
Latency
- delay of packet delivery. This can cause echoes during a
conversation.
•
Jitter
- variations in delay of packet delivery. This could cause strange sound
effects. The X2002 utilizes a jitter buffer to minimize the effects of jitter.
•
Packet Loss
- packets are dropped due to an overwhelming amount of traffic
on the network. Some degree of packet loss will not be noticeable to the end
user, but as packet loss increases the quality of sound degrades.
The X2002 can be configured to change the priority field of IP packets for all
outgoing RTP (Real Time Protocol) packets. The X2002 supports Type of Service
(ToS) and Differentiated Services (Diffserv) for implementing QoS. Configure the
X2002 with the QoS settings that your network uses for VoIP.
8.1.1 What You Can Do in this Chapter
Use the
QoS
screen to configure the type of QoS you want to use, and to specify
the level of service you want to use for the X2002’s traffic on your network. See
.
8.1.2 What You Need to Know
The following terms and concepts may help you as you read through the chapter.
Содержание X2002
Страница 2: ......
Страница 24: ...Table of Contents X2002 User s Guide 24...
Страница 25: ...25 PART I User s Guide...
Страница 26: ...26...
Страница 40: ...Chapter 2 How It Works X2002 User s Guide 40...
Страница 99: ...99 PART II Technical Reference...
Страница 100: ...100...
Страница 124: ...Chapter 5 Network Deployment X2002 User s Guide 124...
Страница 166: ...Chapter 7 Auto Provision X2002 User s Guide 166...
Страница 170: ...Chapter 8 QoS X2002 User s Guide 170...
Страница 248: ...Chapter 16 Click To Talk Group X2002 User s Guide 248...
Страница 252: ...Chapter 17 Group Access Code X2002 User s Guide 252...
Страница 304: ...Chapter 19 Auto Attendant X2002 User s Guide 304...
Страница 312: ...Chapter 20 LCR X2002 User s Guide 312...
Страница 346: ...Chapter 22 Call Services X2002 User s Guide 346...
Страница 380: ...Chapter 25 Status Observation X2002 User s Guide 380...
Страница 402: ...Chapter 27 Call Detail Record CDR X2002 User s Guide 402...
Страница 410: ...Chapter 28 ACD Logs X2002 User s Guide 410...
Страница 416: ...Chapter 29 Administrator Accounts X2002 User s Guide 416...
Страница 424: ...Chapter 30 Diagnostics X2002 User s Guide 424...
Страница 426: ...Chapter 31 X2002 User s Guide 426...
Страница 446: ...Chapter 32 Remote Management X2002 User s Guide 446...
Страница 448: ...Chapter 33 TFTP Management X2002 User s Guide 448...
Страница 462: ...Chapter 35 License Control X2002 User s Guide 462...
Страница 482: ...Chapter 36 Web Portal X2002 User s Guide 482...
Страница 508: ...Chapter 39 Product Specifications X2002 User s Guide 508...
Страница 548: ...Appendix C Legal Information X2002 User s Guide 548...
Страница 562: ...Index X2002 User s Guide 562...