Avaya IP Telephony Konfigurationsanleitung Seite 127
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Chapter 6 Setting up VoIP trunks for outgoing calls 127
IP Telephony Configuration Guide
Resetting the log
With PSTN Fallback metrics selected: On the top menu, click Configuration menu, and select
Clear data and time.
Quality of Service Monitor
The Quality of Service Monitor is an application that monitors the quality of the IP channels. It
does this by performing a check every 15 seconds. The QoS Monitor determines the quality of the
intranet based on threshold tables for each codec. If the QoS Monitor is enabled, and it determines
that the quality of service falls below the indicated threshold, it will trigger fallback to PSTN. For
information about setting up the system to use QoS and fallback to PSTN, see “Setting up VoIP
trunks for fallback” on page 112.
Bandwidth required for QoS monitor: There are monitoring packets that are sent back and forth
between any two Business Communications Managers that are configured with each other as
remote gateway entries, to determine the available bandwidth for VoIP phone calls. These packets
are 88 bytes in length, and are sent 100 times a minute, at evenly spaced intervals, in each
direction. The bandwidth required for this monitoring is then 2 X 100 X 88 bytes / 60 seconds =
293 bytes/second or 2346 bits/second, in each direction, for a total of 586 bytes/second or 4693
bits/second.
For further information about QoS, refer to the information under the following headings:
• “Quality of Service Status”
• “Updating the QoS monitor data” on page 128
• “Viewing QoS monitoring logging” on page 128
Quality of Service Status
The QoS Status displays the current network quality described as a Mean Opinion Score (MOS)
for each IP destination. A pull-down menu allows the administrator to view the MOS mapping.
The table below shows a sample QoS Monitor.
Table 28 QoS status
Warning: Network note: All systems in a private network must be running BCM 3.5 or
newer software or have the QoS 3.0.0.25 or later patch. Business Communications
Managers running BCM 3.0.1. or earlier software without installing the patch will be
unable to support the new version of H.323.
IP
QoS
Monitor
G.711
aLaw
G.711
uLaw
G.723.1 5.3
kbit/s
G.723.1 6.3
kbit/s
G.729
Tx Rx Tx Rx Tx Rx Tx Rx Tx Rx
47.192.5.2Enabled 4.004.304.004.304.804.904.754.704.504.50
47.192.5.6 Disabled N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
- Business Communications 1
- Manager 3.6 1
- IP Telephony Configuration 1
- Trademarks 2
- Contents 3
- Chapter 3 4
- Chapter 4 4
- Chapter 5 5
- 10 Contents 10
- P0609327 02 10
- Before you begin 15
- Symbols used in this guide 15
- Text conventions 16
- Acronyms 17
- Related publications 18
- How to get help 19
- 20 Preface 20
- Chapter 1 21
- Introduction 21
- IP telephones and VoIP trunks 22
- Figure 1 Network diagram 24
- Telephones 25
- Gatekeepers on the network 25
- IP network 26
- Key IP telephony concepts 27
- Jitter Buffer 28
- QoS routing 29
- Chapter 2 31
- Prerequisites checklist 31
- Network devices 32
- Network assessment 33
- Resource assessment 33
- Keycodes 34
- Option Description 35
- VoIP trunks 39
- IP telephone records 40
- Installing IP telephones 41
- Choosing a codec 45
- Choosing a Jitter Buffer 46
- Before installing 46
- Using a 3-port switch 46
- Display buttons 48
- Troubleshooting IP telephones 51
- Operation issues 52
- Configuring DHCP 53
- IP telephony DHCP notes 54
- Checking IP server status 56
- Figure 7 IP Terminal status 57
- Notes about Hot Desking 62
- Customizing feature labels 63
- Moving IP telephones 69
- Figure 16 i2050 Switch type 72
- Handset and call functions 74
- Configuring NetVision records 75
- Assigning general settings 76
- Changing a handset Name 82
- Deregistering a telephone 83
- Configuring local VoIP trunks 85
- Published IP address 86
- Counting IP trunks 87
- Configuring media parameters 89
- Setting up the local gateway 91
- How to use target lines 98
- Configuring target lines 99
- Chapter 6 101
- Field Value Description 104
- 6 Click the Save button 105
- Outgoing call configuration 107
- H.323 trunks 108
- SIP trunks 108
- Keycodes: 2 108
- PSTN call to remote node 109
- Call process 110
- Describing a fallback network 113
- Adding routes for fallback 114
- Figure 35 Route XXX screen 115
- Figure 36 VoIP schedule 117
- How fallback routing works 120
- Settings for 124
- Santa Clara 124
- Connecting an i200X telephone 125
- PSTN fallback metrics 126
- Quality of Service Monitor 127
- Updating the QoS monitor data 128
- Chapter 7 129
- 3 Enter the port settings 130
- Modifying PortRanges 131
- Using a gatekeeper 133
- 8 Click Submit 140
- Gatekeeper call scenarios 141
- Faxing over VoIP lines 142
- Chapter 8 147
- WarehouseHead Office 148
- Appendix A 153
- Efficient Networking 153
- Network engineering 154
- LAN engineering examples 157
- WAN engineering 158
- Setting Non-linear processing 159
- Enough link capacity 161
- Further network analysis 162
- Components of delay 163
- Reduce link delay 163
- Reducing hop count 164
- Adjust the jitter buffer size 164
- Reduce packet errors 164
- Routing issues 165
- Appendix B 167
- Silence compression 167
- Time -> 169
- Bandwidth -> 169
- Channel/Link Max 169
- Comfort noise 172
- Appendix C 173
- Network performance utilities 173
- Appendix D 175
- Interoperability 175
- Speech path setup methods 176
- Media path redirection 177
- Gatekeeper 177
- No feedback busy station 178
- Interoperability 179 179
- 180 Interoperability 180
- Using VLAN on the network 181
- 182 Interoperability 182
- Symbol NetVision telephones 183
- 184 Interoperability 184
- Interoperability 185 185
- 186 Interoperability 186
- Interoperability 187 187
- 188 Interoperability 188
- Interoperability 189 189
- 190 Interoperability 190
- Appendix E 191
- Quality of Service 191
- 192 Quality of Service 192
- Measuring Intranet QoS 193
- Recording routes 194
- Adjusting Ping measurements 195
- Measurement procedure 196
- Quality of Service 197 197
- Traffic mix 198
- TCP traffic behavior 199
- Network Quality of Service 200
- Quality of Service parameters 201
- Fallback to PSTN 201
- 202 Quality of Service 202
- Glossary 203
- 204 Glossary 204
- Glossary 205 205
- 206 Glossary 206
- Glossary 207 207
- 208 Glossary 208
- Glossary 209 209
- 210 Glossary 210
- 222 Index 222
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