Avaya BCM 2.5 IP Telephony Guide de configuration

Part No. P0937663 02Business Communications Manager 2.5IP Telephony Configuration GuideReturnto Menu

10P0937663 02.0 Figure 41 Local gateway IP interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81Figure 42 Business Com

100 NetworkingP0937663 02.0 • Serialization delay: The serialization delay is the time it takes to transmit the voice packet one bit at a time over a

Networking 101IP Telephony Configuration Guide • Improve meshing. Add links to help improve routing, adding a link from router1 to router4 instead of

102 NetworkingP0937663 02.0 Saturation refers toa situation where too many packets are on the intranet. Packets can be dropped on improperly planned o

103IP Telephony Configuration Guide Appendix BSilence compressionSilence compression reduces bandwidth requirements by as much as 50%. This appendix e

104 Silence compressionP0937663 02.0 Figure 48 One Call on a Half Duplex Link Without Silence compression When silence compression is enabled, voice

Silence compression 105IP Telephony Configuration Guide The affect of silence compression on half-duplex links is therefore to reduce the peak and ave

106 Silence compressionP0937663 02.0 Figure 51 One Call on a Full Duplex Link Without Silence compression When silence compression is enabled, voice

Silence compression 107IP Telephony Configuration Guide Figure 52 One Call on a Full Duplex Link With Silence compression When several calls are mad

108 Silence compressionP0937663 02.0 Figure 53 Two Calls on a Full Duplex Link With Silence compression Comfort NoiseTo provide a more natural sound

109IP Telephony Configuration Guide Appendix CNetwork Performance UtilitiesThere are two common network utilities, Ping and Traceroute. These utilitie

11IP Telephony Configuration Guide TablesTable 1 Network diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

110 Network Performance UtilitiesP0937663 02.0

111IP Telephony Configuration Guide Appendix DInteroperabilityBusiness Communications Manager 2.5 IP Telephony adheres with the ITU-T H.323v2 standar

112 InteroperabilityP0937663 02.0 Speech Path Setup MethodsBusiness Communications Manager 2.5 currently only initiates calls using H.323 slowStart me

Interoperability 113IP Telephony Configuration Guide GatekeeperThe Business Communications Manager is designed to interoperate with any H.323v2 gateke

114 InteroperabilityP0937663 02.0 Symbol TelephonesThe Business Communications Manager currently can only receive slowStart calls from a Symbol phone.

115IP Telephony Configuration Guide Appendix EQuality of ServiceSetting QoSThe users of corporate voice and data services expect these services to mee

116 Quality of ServiceP0937663 02.0 The settings in Table 18 on page 116 indicate the quality of voice service. IP telephony periodically calculates t

Quality of Service 117IP Telephony Configuration Guide The file can be analyzed by the administrator using spreadsheets and other statistics packages.

118 Quality of ServiceP0937663 02.0 Adjusting ping measurementsThe Ping statistics are based on round-trip measurements. While the QoS metrics in the

Quality of Service 119IP Telephony Configuration Guide Program a script to run the Ping program during intranet’s peak hours, repeatedly sending a ser

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120 Quality of ServiceP0937663 02.0 If QoS levels of some or all routes fall short of being Good, evaluate options and costs for upgrading the intrane

Quality of Service 121IP Telephony Configuration Guide TCP traffic behaviorMost of corporate intranet traffic is TCP-based. Different from UDP, that h

122 Quality of ServiceP0937663 02.0 The model is the reason for compression characteristics of the codecs. Each codec delivers a different MOS for the

Quality of Service 123IP Telephony Configuration Guide Delay variation (jitter)The amount of variation in packet delay is otherwise known as delay var

124 Quality of ServiceP0937663 02.0

125IP Telephony Configuration Guide GlossarybackboneA network’s major transmission path, handling high-volume, high-density traffic.bandwidthA measure

126 GlossaryP0937663 02.0 H.323The ITU standard for multimedia communications over an IP network. Enterprise Edge IP Telephony supports H.323.HubCente

IP Telephony Configuration Guide127IndexAacronyms 15Cchanges to the intranet 102checklist 27codecsdefined 23for IP sets 33Conventions and symbols 14D

128 IndexP0937663 02.0Jitter bufferdefined 24IP sets 33jitter buffer size 101Llink delay 100MM1-ITGdefined 22Interoperatibility 111Measuring Intran

13IP Telephony Configuration Guide PrefaceThis guide describes IP Telephony functionality for the Business Communications Manager 2.5 system. This inc

14 PrefaceP0937663 02.0 Symbols used in this guideThis guide uses these symbols to draw your attention to important information:Text conventionsThis g

Preface 15IP Telephony Configuration Guide AcronymsThis guide uses the following acronyms:italic text Represents terms, book titles and variables in c

16 PrefaceP0937663 02.0 UDP User Datagram ProtocolUTPS UNISTEM Terminal Proxy ServerVoIP Voice over Internet ProtocolWAN Wide Area Network

Preface 17IP Telephony Configuration Guide Related publicationsDocuments referenced in the Business Communications Manager 2.5 IP Telephony Configurat

18 PrefaceP0937663 02.0 How to get helpYour local distributor can provide technical support for your Business Communications Manager system or have ac

19IP Telephony Configuration Guide Chapter 1IntroductionIP Telephony provides the flexibility, affordability and expandability of the Internet to the

2P0937663 02.0 Copyright © 2001 Nortel NetworksAll rights reserved. The information in this document is subject to change without notice. The statemen

20 Chapter 1 IntroductionP0937663 02.0 IP telephones IP telephones offer the functionality of regular telephones, but do not require a hardwire connec

Chapter 1 Introduction 21IP Telephony Configuration Guide Figure 1 Network diagramBusiness Communications ManagerThe Business Communications Manager

22 Chapter 1 IntroductionP0937663 02.0 M1-ITGThe Meridian 1 Internet Telephony Gateway lets the M1 communicate with H.323 devices including the Busine

Chapter 1 Introduction 23IP Telephony Configuration Guide WANA Wide Area Network (WAN) is a communications network that covers a wide geographic area,

24 Chapter 1 IntroductionP0937663 02.0 Jitter BufferVoice frames are transmitted at a fixed rate, because the time interval between frames is constant

Chapter 1 Introduction 25IP Telephony Configuration Guide The Business Communications Manager system does QOS routing, but if one or more routers alon

26 Chapter 1 IntroductionP0937663 02.0

27IP Telephony Configuration Guide Chapter 2Prerequisites checklistBefore you set up VoIP trunks or IP telephones on a Business Communications Manager

28 Chapter 2 Prerequisites checklistP0937663 02.0 Table 2 Network device checklistNetwork assessmentThis section ensures that the network is capabl

Chapter 2 Prerequisites checklis t29IP Telephony Configuration Guide Table 4 Resource AssessmentKeycodesAll elements of VoIP trunks and IP telephony

3IP Telephony Configuration Guide ContentsPreface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

30 Chapter 2 Prerequisites checklistP0937663 02.0 Table 6 Business Communications Manager system configurationIP TelephonesComplete this section onl

31IP Telephony Configuration Guide Chapter 3Installing IP TelephonesAn IP telephone converts the voice signal into data packets and sends these packet

32 Chapter 3 Installing IP TelephonesP0937663 02.0 Figure 2 Set registration properties2 Set Registration to ON to allow new IP clients to register

Chapter 3 Installing IP Telephones 33IP Telephony Configuration Guide 6 From the Codec menu, select a default Codec, or leave the Default Codec at Aut

34 Chapter 3 Installing IP TelephonesP0937663 02.0 Installing and Configuring i2004 Internet TelephonesThe telephone can be configured by the end user

Chapter 3 Installing IP Telephones 35IP Telephony Configuration Guide Configuring the i2004 telephoneDepending on how you set up terminal registration

36 Chapter 3 Installing IP TelephonesP0937663 02.0 After you have configured a telephone, it attempts to connect to the Business Communications Manage

Chapter 3 Installing IP Telephones 37IP Telephony Configuration Guide • Registration Disabled--The Registration on the Business Communications Manager

38 Chapter 3 Installing IP TelephonesP0937663 02.0 Configuring DHCPAn alternative to manually configuring the IP sets is to use Distributed Host Contr

Chapter 3 Installing IP Telephones 39IP Telephony Configuration Guide Figure 4 DHCP summary4 Set the Status box to Enabled.5 Open Services/DHCP/Loca

4P0937663 02.0 Chapter 3Installing IP Telephones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Preparing your Bus

40 Chapter 3 Installing IP TelephonesP0937663 02.0 Figure 5 DHCP range6 Set each of the following:• Scope Status: set this to Enabled• Default Gatew

Chapter 3 Installing IP Telephones 41IP Telephony Configuration Guide 1 In the Unified Manager, open Services, IP Telephony, and click on Nortel IP Te

42 Chapter 3 Installing IP TelephonesP0937663 02.0 Figure 7 Configuration menu5 From the menu, select Modify Codec/Jitter Buffer. The Terminal dialo

Chapter 3 Installing IP Telephones 43IP Telephony Configuration Guide Download Firmware to an i200X telephoneFirmware is the software stored in the te

44 Chapter 3 Installing IP TelephonesP0937663 02.0 The system drops any active call on that telephone, and downloads a new firmware load into the sele

Chapter 3 Installing IP Telephones 45IP Telephony Configuration Guide 4 Open the Configuration menu, or right-click anywhere on the listing for the te

46 Chapter 3 Installing IP TelephonesP0937663 02.0 Moving IP telephonesIP telephones retain their DN when they are moved to a new location. The follow

Chapter 3 Installing IP Telephones 47IP Telephony Configuration Guide Figure 12 i2050 Communications server2 Enter the Published IP address of the B

48 Chapter 3 Installing IP TelephonesP0937663 02.0 Adding H.323 devices to the systemThe Business Communications Manager can support devices that use

Chapter 3 Installing IP Telephones 49IP Telephony Configuration Guide Figure 15 H.323 Terminal list dialog3 Type a valid DN, password, and the IP ad

5IP Telephony Configuration Guide Turning on QoS monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68Enabling

50 Chapter 3 Installing IP TelephonesP0937663 02.0

51IP Telephony Configuration Guide Chapter 4VoIP Trunk ConfigurationThis chapter explains how to configure VoIP trunks on a Business Communications Ma

52 Chapter 4 VoIP Trunk ConfigurationP0937663 02.0 1 In Unified Manager, open Services and click on IP Telephony. The Global settings tab appears.Figu

Chapter 4 VoIP Trunk Configuration 53IP Telephony Configuration Guide Figure 17 Setting the Published IP address If you using IP telephones on the n

54 Chapter 4 VoIP Trunk ConfigurationP0937663 02.0 Configuring codecsThis section explains how to select the codecs that are used for VoIP trunks. Fo

Chapter 4 VoIP Trunk Configuration 55IP Telephony Configuration Guide G.723.1 and G.729 support silence compression. If a conversation is using G.711,

56 Chapter 4 VoIP Trunk ConfigurationP0937663 02.0 Figure 20 Media parameters3 In the Voice Jitter Buffer, select a value. Outgoing call configurati

Chapter 4 VoIP Trunk Configuration 57IP Telephony Configuration Guide Putting VoIP lines into a line poolLines 001 to 060 are reserved for VoIP trunks

58 Chapter 4 VoIP Trunk ConfigurationP0937663 02.0 Configuring the Access code for the Line PoolAn access code is a number that users dial from their

Chapter 4 VoIP Trunk Configuration 59IP Telephony Configuration Guide 1 In Unified Manager, open Services, Telephony Services, System DNs, Assigned DN

6P0937663 02.0 Additional feature configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96Setting Non-lin

60 Chapter 4 VoIP Trunk ConfigurationP0937663 02.0 2 In the Configuration menu, select Add a new entry. The Remote Gateway window appearsFigure 24 R

Chapter 4 VoIP Trunk Configuration 61IP Telephony Configuration Guide Figure 25 PSTN fallback diagramBefore configuring fallback, you must have both

62 Chapter 4 VoIP Trunk ConfigurationP0937663 02.0 Figure 26 VoIP schedule2 Select a schedule that will not be used for another purpose, typically

Chapter 4 VoIP Trunk Configuration 63IP Telephony Configuration Guide Figure 27 VoIP Routing Service5 Change the Service setting to Manual. 6 Change

64 Chapter 4 VoIP Trunk ConfigurationP0937663 02.0 Figure 28 Route list2 Click the Add button. The Add Routes dialog appears.Figure 29 Add route d

Chapter 4 VoIP Trunk Configuration 65IP Telephony Configuration Guide Figure 30 Add route dialog3 Type a number between 001 and 999 to define this r

66 Chapter 4 VoIP Trunk ConfigurationP0937663 02.0 Figure 32 Normal schedule5 Change Use Route to the route you configured for your PSTN fallback li

Chapter 4 VoIP Trunk Configuration 67IP Telephony Configuration Guide Figure 33 VoIP schedule7 Change Use Route to the route you configured for your

68 Chapter 4 VoIP Trunk ConfigurationP0937663 02.0 To activate the VoIP lines: 1 Dial Feature 873 from the control set for the VoIP trunk. The phone p

Chapter 4 VoIP Trunk Configuration 69IP Telephony Configuration Guide Figure 34 Remote Gateway list2 Select the Remote Gateway for which you want to

7IP Telephony Configuration Guide Recording routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117Adj

70 Chapter 4 VoIP Trunk ConfigurationP0937663 02.0 communications in one direction are more important than in the other direction, you can set up asym

Chapter 4 VoIP Trunk Configuration 71IP Telephony Configuration Guide 8 Click the key beside Trunk/line data.9 Click on Received number.10 In the Publ

72 Chapter 4 VoIP Trunk ConfigurationP0937663 02.0 • Private IP address: 10.10.5.1• Public IP address: 47.62.84.1• Phones 321-331• From this system, d

Chapter 4 VoIP Trunk Configuration 73IP Telephony Configuration Guide • Service: Manual• Overflow: Y8 The installer defines a new route called Route 0

74 Chapter 4 VoIP Trunk ConfigurationP0937663 02.0 pool, because the access code would not work with fallback. Instead, the line pool will be accessed

Chapter 4 VoIP Trunk Configuration 75IP Telephony Configuration Guide • 7 is the destination code. If a suitable level of QoS is available, the call i

76 Chapter 4 VoIP Trunk ConfigurationP0937663 02.0 To use NetMeeting:1 Install NetMeeting on the client computer. 2 In the Tools menu, click Options.

Chapter 4 VoIP Trunk Configuration 77IP Telephony Configuration Guide Repeat this procedure for every NetMeeting client you want to set up.Quality of

78 Chapter 4 VoIP Trunk ConfigurationP0937663 02.0 Using firewallsFirewalls can interfere with communications between the Business Communications Mana

Chapter 4 VoIP Trunk Configuration 79IP Telephony Configuration Guide Figure 40 Port ranges dialog4 Change the port settings.5 Click the Save button

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80 Chapter 4 VoIP Trunk ConfigurationP0937663 02.0 Using a gatekeeperThe Business Communications Manager supports the use of an ITU-H323 gatekeeper.

Chapter 4 VoIP Trunk Configuration 81IP Telephony Configuration Guide • E.164 — numeric identifier containing a digit in the range 0-9 (commonly used

82 Chapter 4 VoIP Trunk ConfigurationP0937663 02.0 If selecting GateKeeperRouted or GateKeeperResolved, in the Alias Names box type one or more alias

Chapter 4 VoIP Trunk Configuration 83IP Telephony Configuration Guide 1 Business Communications Manager Ottawa send an AdmissionRequest to the gatekee

84 Chapter 4 VoIP Trunk ConfigurationP0937663 02.0

85IP Telephony Configuration Guide Chapter 5Typical applicationsThis section explains several common installation scenarios and provides examples for

86 Chapter 5 Typical applicationsP0937663 02.0 • Set phones to receive incoming calls through target lines. • Configure the PSTN fallback and enable Q

Chapter 5 Typical applications 87IP Telephony Configuration Guide Figure 44 Multiple Business Communications Manager systems network diagramTo set u

88 Chapter 5 Typical applicationsP0937663 02.0 Figure 45 M1 to Business Communications Manager network diagramTo set up this system:1 Ensure that th

Chapter 5 Typical applications 89IP Telephony Configuration Guide Business Communications Manager to IP TelephonesThis system allows for home-based us

9IP Telephony Configuration Guide FiguresFigure 1 Network diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

90 Chapter 5 Typical applicationsP0937663 02.0

91IP Telephony Configuration Guide Appendix ANetworkingThis appendix provides information on making your network run more efficiently. Determining the

92 NetworkingP0937663 02.0 The difference between the current capacity and its acceptable limit is the available capacity. For example, a T1 link used

Networking 93IP Telephony Configuration Guide Table 10 Voice over IP Transmission Characteristics for unidirectional continuous media streamBandwidt

94 NetworkingP0937663 02.0 Table 11 Bandwidth Requirements per BCM Gateway port for half-duplex links.Bandwidth Requirements on Full Duplex LinksTab

Networking 95IP Telephony Configuration Guide The bandwidth made available by silence suppression on full-duplex links with continuous transmission ra

96 NetworkingP0937663 02.0 WAN engineeringWide Area Network (WAN) links are typically full-duplex links - both talk and listen traffic use separate ch

Networking 97IP Telephony Configuration Guide Each site supports four VoIP ports. Assume the codex is G.729 Annex B, 20 ms payload. Assuming full-dupl

98 NetworkingP0937663 02.0 Enough link capacityTable 13 on page 98 sorts the computations so that for each link, the available link capacity is compar

Networking 99IP Telephony Configuration Guide Other intranet resource considerationsBottlenecks caused by non-WAN resources do not occur often. For a