Solving coverage issues | Nortel Networks NN43001-504 manual

Access point planning 45

Figure 4

Sample AP placement diagram for b radio

Solving coverage issues

To resolve coverage issues, add and relocate APs.

Solving overlap issues

To resolve overlap issues, reassign channels to the APs or relocate the APs. Like channels require 15–20dBm separation. See Figure 5 "b radio assignment" (page 46).

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 45

Nortel Networks NN43001-504 manual Solving coverage issues, Solving overlap issues, Sample AP placement diagram for b radio

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 Feature description New in this releaseOther changes 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 How to get help Getting help over the phone from a Nortel Solutions CenterGetting help from the Nortel Web site Getting help through a Nortel distributor or reseller Subject Overview System migration Applicable systems Resources ConventionsNTPs Online Wireless telephone network description Declaration of conformityShielded cable 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 Wi-Fi Multimedia LanguageLicenses 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 Handset switchover Handset switchoverLoss of signal 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 Access point planning Syslog Server planningRecommendation Site Survey mode Access point requirement considerations for b radioSite survey Frequencies used by b radio Network usage Effective site surveyMobility requirements Physical site study RF transmission testing Example of AP placementWalk-through and survey Solving coverage issues Solving overlap issuesSample AP placement diagram for b radio Network planning Network recommendationRadio assignment 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 NetiQ Vivinet Diagnostics example ZonesCommunication Server 1000 Telephony Manager Other network design considerations Access Point interference Ssid options and limitations Example Single telephony Vlan implementation Layer 3 implementation Installation requirements Wlan IP Telephony Manager 2245 planningCapacities Wlan IP Telephony Manager 2245 groups Master Wlan IP Telephony ManagerGroup capacities 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 Planning worksheets IP addressing with DhcpWlan IP Telephony Manager 2245 planning worksheet Required only if using the optional Wlan Application Gateway System information Bandwidth managementZones 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 Tftp Server location in a NAT environment Wlan Application Gateway 2246 in a NAT environmentNetwork conﬁguration 3 with Full Dhcp Server 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 Procedure Wall-mounting the Wlan IP Telephony Manager Procedure Rack-mounting the Wlan IP Telephony ManagerRack-mount Power connection Wlan Application Gateway 2246 installationProcedure Connecting the power LAN connection Installation Wlan IP Telephony Manager 2245 conﬁguration IntroductionFunctional description Wlan IP Telephony Manager 2245 conﬁguration Conﬁguration tasks Connect to the Wlan IP Telephony ManagerSerial port connection 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 Administration and maintenance Adding a Wlan IP Telephony Manager 2245 to the systemChecking in to the Gateway 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 Troubleshooting Troubleshooting the Wlan IP Telephony ManagerError Status screen 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 32 Stat command LD 117 Inventory commandLD 117 Stip command DsetShow command TPS CLI commands E2dsetShow command IsetReset and isetResetAllIsetCount and isetGet UmsPolicyShow and umsUpdatePolicy UmsKernalJobsShow and umsUpgradeAllIsetShow, isetShowByTN, and isetShowByIP UsiLibTrace Troubleshooting coverage issues Before calling Nortel Technical SupportDetermining alias IP addresses Before calling Nortel Technical Support Troubleshooting NTTQ65AB NTTQ65BA Appendix a Wlan Application Gateway System overview Model number Number of usersWlan Application Gateway 2246 connections 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 Administration console navigation Task summary listEnter Conﬁguring network parameters Conﬁguring the OAI Box Procedure Conﬁguring the network Connecting to the LAN Connecting to the Application Server Connect to the Application Server through an RS-232 portRS-232 cable connection Pins on the connector Function Connect to the Application Server through the LANConnect to Application Server through a modem 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 Setting or changing a password Procedure Setting or changing a passwordSystem status Network status Procedure Viewing system status Software versions Viewing the network status Certiﬁcation testing Software updates SoftwareSoftware ﬁles File name Description Procedure Transferring the software using FTP Obtain software using FTP Procedure Loading software updates Tftp software updates Systems Planning Worksheet for Handsets Handset Planning WorksheetDialing Port MAC Address User Name Ext IP Address if static 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 Product-speciﬁc conﬁguration Terminal proxy serverAttachments Other Required table Wlan speciﬁc conﬁguration HandsetsWlan IP Telephony Manager 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 Short Error code Description Action Timing informationTiming Wlan IP Telephony Manager Handset to To the AP 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 Data checklist Data captureQuestions 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 Reference documents Network speech levelsReferences Source and type Title Revision Comments 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