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38 Chapter 3 Installing IP telephones
P0937663 03.1
When you have entered all the configuration information, the telephone attempts to connect to
the Business Communications Manager. The message
Locating Server
appears on the
display. If the connection is successful, the message changes to
Connecting to Server
after about 15 seconds. Initialization may take several minutes. Do not disturb the telephone
during this time.
Once the telephone connects to the server, the display shows the DN number and a date
display. As well, the six keys at the top of the display are labelled.The telephone is ready to
use.
Troubleshooting an IP telephone
If the system is not properly configured, several messages can appear, as listed in Table 9.
Note: If the DN record has not yet been configured, as will be the case with auto-assigned
DNs, you will only be able to make local calls, until other lines have been assigned.
Note: If the telephone has not been registered before, you will receive a
New Set
message. Enter the information you are prompted for. Refer to “Registering the telephone
to the system” on page 35.
Table 9 IP telephony display messages
Message Description/Solution
SERVER: NO PORTS LEFT
The Business Communications Manager has run out of ports. This message
will remain on the display until a port becomes available and the telephone is
powered down then powered up.To obtain more ports, you may need to install
additional keycodes. See the Keycode Installation Guide.
Invalid Server Address
The S1 is incorrectly configured with the IP address of a Business
Communications Manager network adapter other than the published IP
address.
Registration Disabled
The Registration on the Business Communications Manager is set to OFF.
INCOMING PACKET LOSS
While on a call, the number of voice packets is less than expected.
This message may appear occasionally in normal circumstances. In this case,
the message can be ignored.
If the message appears frequently or does not go away, it indicates that the far
end voice packets are not being properly routed. Ask your system administrator
to check the configuration settings for any NAT, DHCP server, firewall and
router between the telephone and the far end.
Note: The IP telephone monitors the number of incoming voice packets every
five seconds.
SERVER UNREACHABLE.
RESTARTING . . .
Check that you have entered the correct Netmask and gateway IP addresses.
If the settings are correct, contact your system administrator.
NEW SET
The telephone has not been connected to the Business Communications
Manager before, and must be registered.
- Business Communications 1
- Manager 2.5 1
- IP Telephony Configuration 1
- Trademarks 2
- Contents 3
- Chapter 4 4
- Chapter 5 5
- Chapter 6 6
- Appendix A 6
- 12 Tables 12
- Before you begin 13
- Symbols used in this guide 13
- Text conventions 14
- Acronyms 14
- Related publications 15
- How to get help 16
- Chapter 1 17
- Introduction 17
- IP telephones and VoIP trunks 18
- Figure 1 Network diagram 19
- Telephones 20
- IP network 21
- Key IP telephony concepts 22
- Jitter Buffer 23
- QoS routing 23
- Chapter 2 25
- Prerequisites checklist 25
- Network assessment 26
- Resource assessment 27
- Keycodes 27
- Defining published IP address 28
- IP telephones 30
- NetVision wireless telephones 30
- Chapter 3 31
- Installing IP telephones 31
- Choosing a codec 33
- Choosing a Jitter Buffer 34
- Before installing 34
- Using a 3-port switch 35
- NORTEL NETWORKS 36
- Manual Cfg DHCP(0 no, 1 yes) 36
- Field Value Description 37
- Slow connection 40
- One-way or no speech paths 40
- Dropped voice packets 40
- Changing the contrast level 40
- Configuring DHCP 41
- Figure 5 IP Terminal status 42
- Figure 6 Configuration menu 42
- Figure 8 Configuration menu 44
- Download Pending 44
- Customizing feature labels 46
- Moving IP telephones 47
- Keep DN alive 48
- Figure 12 i2050 Switch type 49
- 7 Click on the BCM option 50
- Configuring NetVision records 52
- /symbol.com> 53
- <http:/ 53
- Testing the handset functions 55
- Changing a handset Name 57
- Configuring VoIP trunks 59
- Configuring media parameters 60
- Setting silence compression 61
- Setting jitter buffers 62
- Outgoing call configuration 63
- Figure 18 Trunk/Line data 64
- Configuring a remote gateway 66
- Configuring PSTN fallback 68
- Enabling PSTN fallback 69
- Setting up the VoIP schedule 69
- Configuring routes 70
- Figure 26 VoIP schedule 73
- Activating the VoIP schedule 74
- Turning on QoS monitor 75
- Incoming call configuration 76
- Example configuration 78
- Making calls 82
- Connecting an i200X telephone 83
- Quality of Service Monitor 86
- Port settings 86
- Using firewalls 87
- Using a gatekeeper 88
- The call signaling method 89
- Gatekeeper call scenarios 91
- Typical applications 93
- Setting up the system 95
- Efficient Networking 99
- Network engineering 100
- LAN engineering examples 103
- WAN engineering 104
- Setting Non-linear processing 105
- (8 kb/s) 106
- P0937663 03.1 106
- Traceroute 106
- Enough link capacity 107
- Not enough link capacity 107
- Further network analysis 108
- Reduce link delay 109
- Reducing hop count 109
- Adjust the jitter buffer size 110
- Reduce packet errors 110
- Routing issues 111
- Appendix B 113
- Silence compression 113
- Comfort noise 116
- Appendix C 117
- Network performance utilities 117
- Appendix D 119
- Interoperability 119
- Speech path setup methods 120
- Media path redirection 120
- Gatekeeper 120
- Symbol NetVision telephones 121
- 122 Interoperability 122
- Appendix E 123
- Quality of Service 123
- Measuring Intranet QoS 124
- Recording routes 125
- Adjusting Ping measurements 126
- Measurement procedure 127
- 128 Quality of Service 128
- Traffic mix 129
- TCP traffic behavior 129
- Network Quality of Service 130
- Quality of Service parameters 131
- Fallback to PSTN 132
- Glossary 133
- 134 Glossary 134
- Glossary 135 135
- 136 Glossary 136
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