Avaya BCM 2.0 IP Telephony Uživatelský manuál

1-800-4 NORTELwww.nortelnetworks.com© 2000 Nortel NetworksP0911590 Issue 02Enterprise Edge 2.0IP TelephonyConfiguration Guide

10 OverviewEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Network Quality of ServiceEnterprise Edge VoIP Gateway uses a metho

Overview 11P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideThe VoIP Gateway monitoring function can take about 3 mins to respo

12 OverviewEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Network Performance UtilitiesThere are two common network utilities

Overview 13P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideAll gateways in the intranet must use the same codec types. Each ga

14 OverviewEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Jitter bufferA major cause to reduced voice quality is IP network p

P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideEngineering guidelinesThe engineering guidelines address the design of an IP tru

16 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Correct design procedures and rules are a must if a co

Engineering guidelines 17P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideFigure 1 IP Telephony network engineering process show

18 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Table 1 LAN and WAN IP bandwidth usage per Enterprise

Engineering guidelines 19P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideWhen a user at DN-A calls DN-C, the IP addresses in th

20 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02LAN engineering Engineering the network for worst case

Engineering guidelines 21P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideFor more information about silence compression and fax

22 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02With Table 2 LAN and WAN IP bandwidth usage per Enterp

Engineering guidelines 23P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideDetermining WAN link resourcesFor most installations,

24 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Determining network loading caused by IP telephony tra

Engineering guidelines 25P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideTable 3 Link capacitySome network management systems h

26 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Setting QoSThe users of corporate voice and data servi

Engineering guidelines 27P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideThe settings in Table 4 indicate the quality of voice

28 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02The file can be analyzed by the administrator using sp

Engineering guidelines 29P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideTable 6 Computed load of voice traffic per linkAdjusti

Contents 3P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideContentsChapter 1 Overview 7About this document 8System Functions

30 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Program a script to run the Ping program during intran

Engineering guidelines 31P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideIf QoS levels of some or all routes fall short of bein

32 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Queuing delayThe queuing delay is the time it takes fo

Engineering guidelines 33P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration Guiderouter1 to router4 instead of having the call routed f

34 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Saturation refers to too many packets on the intranet.

Engineering guidelines 35P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideTraffic mixThis section describes what QoS mechanisms

36 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02utilization. When received, the WAN link marks the H.3

Engineering guidelines 37P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideIP telephony settingsCodec typesThe term codec refers

38 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02The G.723.1 codec uses a different compression method

Engineering guidelines 39P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideFigure 5 Silence compressionTo provide a more natural

4 ContentsEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Components of delay 31Reduce link delay 32Reducing hop count 32

40 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Echo cancellationWhen a two-wire telephone cable conne

Engineering guidelines 41P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideWhen a voice packet is delayed and does not arrive at

42 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02• Interoperability with other IP gateways. A terminati

Engineering guidelines 43P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideSet the Tx and Rx thresholds (MOS numbers) for the rem

44 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Private network calls are done by dialing a 4-digit pr

Engineering guidelines 45P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideTable 9 Private and public network routing (West End t

46 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02In this example, outgoing public network calls dialed

Engineering guidelines 47P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideSee the gatekeeper’s software documentation for inform

48 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Users at both locations access the public network by d

Engineering guidelines 49P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideTable 10 Private and public network routing (Toronto t

Contents 5P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideQuality of Service Status 69Using the QoS Monitor pull-down View me

50 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02To Public Network:Services/Routing Service Destination

Engineering guidelines 51P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideThe impact on the configuration on each node are:• eac

52 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Program Remote Packages so that the IP trunks in Pool

Engineering guidelines 53P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideWhen operating IP telephony services, a customer’s org

54 Engineering guidelinesEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02At the end of the month, the administrator can analyze

P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideEngineering checklistHow do you determine if you have enough available bandwidth

56 Engineering checklistEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02

P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideInstallation Before configuration of the Enterprise Edge IP Telephony install th

58 InstallationEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02— Enter the fax jitter buffer value.— Enter the local gateway IP

Installation 59P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration Guide• Select the VoIP Gateway radio button.— Configure IP address fo

6 ContentsEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02

60 InstallationEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Fallback to normal circuit-switched services configurationIf the

P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideConfigurationEnterprise Edge VoIP Gateway uses a menu-driven interface for oper

62 ConfigurationEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02User Interface OverviewUse the following steps to modify an en

Configuration 63P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideFigure 15 Sample dialog box - sample display - new screen cap

64 ConfigurationEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Table 13 Sample Local Gateway ConfigurationThe Local Gateway C

Configuration 65P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration Guide• The Call Signaling field displays the selected IP address co

66 ConfigurationEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Table 14 Sample Remote Gateway ConfigurationThe Remote Gateway

Configuration 67P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideThe Modify Entry option allows the administrator to change the

68 ConfigurationEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02With the fallback feature disabled, calls move across the IP t

P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideMaintenanceQuality of Service MonitorThe Quality of Service Monitor is a softwa

P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideOverviewThe Enterprise Edge VoIP Gateway reduces communication costs by routing

70 MaintenanceEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02

P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideInteroperabilityEnterprise Edge IP Telephony is compatible with the ITU-T H.323

72 InteroperabilityEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Asymmetrical media channel negotiationBy default, the Enter

P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideGlossaryBackbone A network’s major transmission path, handling high-volume, high

74 GlossaryEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02ITU International Telecommunications Unionkbit/s kilobits per second

Enterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02Index 75IndexAalarms 69Aliasname field 65CCall Signaling 65changes to the intra

76 IndexEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02VVoice Jitter Buffer 64

8 OverviewEnterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02About this documentThis guide provides information about the Enterpr

Overview 9P0911590 Issue 02 Enterprise Edge 2.0 IP Telephony Configuration GuideVoIP Gateway trunks, are supervised trunks with answer and disconnec