Multicast | Nortel Networks NN43001-504 manual

Placement guidelines for the WLAN IP Telephony Manager 2245 65

returns. If the wireless handset is conﬁgured to use ESSID of the new WLAN, it automatically discovers the ESSID of the APs operating in broadcast mode.

Table 6 "Roaming and handover capabilities summary" (page 65) summarizes the capabilities.

Table 6

Roaming and handover capabilities summary

IP address	WSS in use	Roaming capability	Handover capability

Static	No	No	No

Static	Yes	Yes	Yes

DHCP	No	Yes, if the	No
		wireless handset
		is power-cycled
		between subnets.

DHCP	Yes	Yes	Yes

Multicast

IP multicast addresses are used by the WLAN Handset 2211 and the WLAN IP 6120 Handset Push-to-talk (PTT) feature. The use of IP multicast addresses requires that multicasting be enabled on the Layer 2 switch used by the deﬁned group (WLAN IP Telephony Manager 2245 master and slaves and wireless handsets).

Routers are typically conﬁgured with ﬁlters to prevent multicast trafﬁc from ﬂowing outside of speciﬁc domains. The wireless LAN can be placed on a separate VLAN or subnet to reduce the effects of broadcast and multicast trafﬁc from devices in other network segments.

Placement guidelines for the WLAN IP Telephony Manager 2245

To reduce the impact that jitter, delay and packet loss has on voice quality, proper placement of the WLAN IP Telephony Manager 2245 is critical. See Figure 10 "Maximum delay, jitter and packet loss" (page 66). The WLAN IP Telephony Manager 2245 provides three critical functions to help achieve exceptional voice quality over WLAN:

•Timing

•Quality of Service (QoS)

•Connection Admission Control

Nortel Communication Server 1000

WLAN IP Telephony Installation and Commissioning

NN43001-504 01.02 Standard

Release 5.0 15 June 2007

Copyright © 2004-2007, Nortel Networks

Image 65

Nortel Networks NN43001-504 manual Multicast, Placement guidelines for the Wlan IP Telephony Manager

Contents

Wlan IP Telephony Installation and Commissioning Page June Revision historyMay August Revision history Contents Planning System information Installation Troubleshooting 119 Release Appendix C Compatible Access Points 223 Index 224 Procedures Copyright 2004-2007, Nortel Networks Other changes Feature descriptionNew in this release Open and use the Admin menu on the handset Zones for wireless handsetsAdmin menu options for the Wlan Handset 6120/6140 Feature programming for the Wlan Handset 6120/6140 New messages are Error Server Unavailable. Restarting Wireless handset status messages New in this release Getting help from the Nortel Web site How to get helpGetting help over the phone from a Nortel Solutions Center Getting help through a Nortel distributor or reseller Subject Overview System migration Applicable systems Resources ConventionsNTPs Online Shielded cable Wireless telephone network descriptionDeclaration of conformity Wireless telephone network description Call Server Typical wireless telephone network conﬁguration Tftp Server Dhcp ServerFirewall Wlan Handset 2210/2211/2212 and Wlan Handset 6120/6140 Components Licenses Wi-Fi MultimediaLanguage Wi-Fi Protected Access Wired Equivalent PrivacyWi-Fi Protected Access2 Push-to-talk feature Loud noise environments Wlan IP Telephony Manager Wlan Application Gateway Access Points Loss of signal Handset switchoverHandset switchover Overview Challenges of integrating voice applications Planning Rate scaling and variable capacity High overhead Quality of Service Power adjustments and variable capacity Dhcp server planning Dhcp server planning Sample Dhcp reservation showing assigned parameters Tftp Server planning Tftp Server planning Recommendation Access point planningSyslog Server planning Site survey Site Survey modeAccess point requirement considerations for b radio Frequencies used by b radio Network usage Effective site surveyMobility requirements Physical site study Walk-through and survey RF transmission testingExample of AP placement Sample AP placement diagram for b radio Solving coverage issuesSolving overlap issues Radio assignment Network planningNetwork recommendation Network management Sample Access Control List Assessment through a Wlan site survey Assessment using NetIQ Vivinet Assessor Planning Enms 10.5 Ipsm overview Enms 10.5 Ipsm convergence view Network management Communication Server 1000 Telephony Manager NetiQ Vivinet Diagnostics exampleZones Other network design considerations Access Point interference Ssid options and limitations Example Single telephony Vlan implementation Layer 3 implementation Capacities Installation requirementsWlan IP Telephony Manager 2245 planning Group capacities Wlan IP Telephony Manager 2245 groupsMaster Wlan IP Telephony Manager Total Handsets 2245 Calls Erlangs 10% use 15% use 20% use Wireless Managers Telephony Managers 2245 2245-10 2245-20 Not applicable Wlan IP Telephony Manager 2245 planning Mobility across different subnets when using Dhcp Access points on the same subnetGateway and timing function Roaming and handover Multicast Placement guidelines for the Wlan IP Telephony Manager Maximum delay, jitter and packet loss Jitter removal for packets going to the AP Example 1 End-to-end delay and packet loss for a LAN Example 2 End-to-end delay and packet loss for a WAN Planning Step Action End Wlan Application Gateway 2246 planning IP address planning Wlan IP Telephony Manager 2245 planning worksheet Planning worksheetsIP addressing with Dhcp Required only if using the optional Wlan Application Gateway Zones System informationBandwidth management Current registration status of wireless handsets Codecs Wireless telephone type designationAlias IP address Call blocking RLR and SLR Jitter buffer Programmable rings and tones Gain adjustmentVirtual Ofﬁce Branch Ofﬁce Survivable Remote Gateway End-to-end QoS External Applications Server Network conﬁgurations NAT Traversal feature VPN design over a Layer 2 network VPN design over a Layer 3 network Not recommended VoWLAN design Dhcp Server location in a NAT environment Wlan IP Telephony Manager 2245 in a NAT environment Network conﬁguration 3 with Full Dhcp Server Tftp Server location in a NAT environmentWlan Application Gateway 2246 in a NAT environment CS 1000 not supported Feature Feature full name Description CS 1000 features XAS IP Phone 2004 features KEM Supported on the Wlan Feature Handsets Description Required materials Installation Wlan IP Telephony Manager 2245 installation tasks Preinstallation checklistSupplied equipment About the front panel Wlan IP Telephony Manager 2245 front panel Wall-mount Rack-mount Procedure Wall-mounting the Wlan IP Telephony ManagerProcedure Rack-mounting the Wlan IP Telephony Manager Power connection Wlan Application Gateway 2246 installationProcedure Connecting the power LAN connection Installation Functional description Wlan IP Telephony Manager 2245 conﬁgurationIntroduction Wlan IP Telephony Manager 2245 conﬁguration Serial port connection Conﬁguration tasksConnect to the Wlan IP Telephony Manager Telnet connection Conﬁgure the network Wlan IP Telephony Manager 2245 conﬁguration Save the conﬁguration Procedure Saving the conﬁguration Changing the master IP address Conﬁgure the Wlan IP Telephony Manager Conﬁgure the Wlan IP Telephony Manager 2245 Procedure Changing the password Change the password Procedure Changing a forgotten password Wlan IP Telephony Manager 2245 conﬁguration Checking in to the Gateway Administration and maintenanceAdding a Wlan IP Telephony Manager 2245 to the system Replacing a Wlan IP Telephony Manager Procedure Replacing a Wlan IP Telephony ManagerFailed master Wlan IP Telephony Manager Replacing the failed Wlan IP Telephony Manager Removing a Wlan IP Telephony Manager 2245 from the system Wireless handset scenariosChanging the master Wlan IP Telephony Manager View software version For a wireless handset Software updatesProcedure Viewing the software version For the Wlan IP Telephony Manager Update software on the Wlan Application Gateway Update software on the Wlan IP Telephony ManagerUpdate software on a wireless handset Lock the system Step Action Select Find Products A-Z Displays Wireless handset download messagesNormal download messages Normal download messages Message Description Failure and recovery messages Message Description Download failure or recovery messages Error Status screen TroubleshootingTroubleshooting the Wlan IP Telephony Manager Network Status screen Software Version Numbers screen Troubleshooting the handset Troubleshooting the Wlan Application GatewaySpeed or duplex mismatch Context Conﬁguration problems Access Point problems Duplex mismatch Dropped callsNo ring Far-end echo Wireless handset status messages Message Description Action Message Description Action Message Description Action Power Off/End Call. Place Battery Low messagePress Power On/Start Call Low Battery and a beep NN43001-504 01.02 Standard Release 5.0 15 June Do not Power OFF Message Description Action Message Description Action Message Description Action Message Description Action LAN Message Description Action Message Description Action See Updating software LD 32 IDU command Using Call Server overlay commands LD 117 Stip command LD 32 Stat commandLD 117 Inventory command DsetShow command TPS CLI commands IsetCount and isetGet E2dsetShow commandIsetReset and isetResetAll UmsPolicyShow and umsUpdatePolicy UmsKernalJobsShow and umsUpgradeAllIsetShow, isetShowByTN, and isetShowByIP UsiLibTrace Determining alias IP addresses Troubleshooting coverage issuesBefore calling Nortel Technical Support Before calling Nortel Technical Support Troubleshooting NTTQ65AB NTTQ65BA Appendix a Wlan Application Gateway Wlan Application Gateway 2246 connections System overviewModel number Number of users Front panel Ethernet switch connections NTTQ65xx Third-party applications Installing with a new system InstallationInstalling in an existing system Nurse-call systems Conﬁguring the Wlan Application Gateway 2246 IP address Procedure Installing the Wlan Application Gateway 04830130 Conﬁguration Enter Administration console navigationTask summary list Conﬁguring network parameters Conﬁguring the OAI Box Procedure Conﬁguring the network Connecting to the LAN RS-232 cable connection Connecting to the Application ServerConnect to the Application Server through an RS-232 port Connect to Application Server through a modem Pins on the connector FunctionConnect to the Application Server through the LAN Continuing conﬁguration through Telnet Connecting through Telnet Conﬁguring the Telephone Line Procedure Conﬁguring a telephone line Procedure Searching for a handset Procedure Deleting a handsetDeleting a handset Searching for a handset Procedure Programming a feature Feature programming System status Setting or changing a passwordProcedure Setting or changing a password Network status Procedure Viewing system status Software versions Viewing the network status Certiﬁcation testing Software ﬁles File name Description Software updatesSoftware Procedure Transferring the software using FTP Obtain software using FTP Procedure Loading software updates Tftp software updates Systems Dialing Port MAC Address User Name Ext IP Address if static Planning Worksheet for HandsetsHandset Planning Worksheet Free the serial port for administrative purposes Site data-gathering tables Appendix B Troubleshooting Wlan IP Telephony installations System Information table System History table Site data-gathering tables Attachments Other Required table Product-speciﬁc conﬁgurationTerminal proxy server Wlan IP Telephony Manager Wlan speciﬁc conﬁgurationHandsets Nortel Wlan Security Switch Nortel switchesCisco access points and switches Cisco Aironet 1200 Series Parameter Setting Importance Wlan Security Switch 2270 notes 1230 connected with 2950 and 2245 connected with 2950 Speciﬁc Cisco conﬁguration examples Connected the APs Connected to 1230 connected with 3560 and 2245 connected with 6509 AP1230 Connected to APs General Wlan conﬁguration Dhcp options Dhcp server options Dhcp options Appendix B Troubleshooting Wlan IP Telephony installations Dhcp support for handsets that emulate the IP Phone Appendix B Troubleshooting Wlan IP Telephony installations Dhcp options Appendix B Troubleshooting Wlan IP Telephony installations Copyright 2004-2007, Nortel Networks Appendix B Troubleshooting Wlan IP Telephony installations RF basics and AP conﬁguration Appendix B Troubleshooting Wlan IP Telephony installations Copyright 2004-2007, Nortel Networks Call or signalling-related issues TroubleshootingTypical call-related issues Issue Type Check for Diagnosis ﬂows Typical voice quality issues Issue Type Check for Voice-quality issues Handset error messages Short Error code Description Action Handset error messages Timing Wlan IP Telephony Manager Handset to To the AP Short Error code Description ActionTiming information Run Site Survey for the Wlan Handset 2210/2211/2212 Diagnostic Tools Ssid Ab7bc8 -28 100 2ae578 -48 200 2ae596 -56 Any Detl Alpha Diagnostics Mode SAWA2 Diagnostics Screen 4 displays the following information Syslog message contents Contents Syslog Mode Syslog message Contents Audio stats AStat Radio stats NStat AP TOO Busy Syslog reason codes Reason code Meaning Number Reason code Meaning Number Action Timeout Questions Data checklistData capture Dhcp scope Site-data required for the capture analysis Syslog capture conﬁguration Network diagram Procedure Using the CLI to capture a Signaling Server log Signaling Server log capture General data capture Procedure Obtaining the wired and wireless capturesPage Click Get Assert Data Network speech levels References Source and type Title Revision Comments Reference documentsNetwork speech levels Ieee Source and type Title Revision Comments Source and type Title Revision Comments Compatibility Appendix C Compatible Access Points Index Symbols/Numerics Index Wlan Page Wlan IP Telephony Installation and Commissioning