Nortel Networks NN43001-504 instruction

206Appendix B Troubleshooting WLAN IP Telephony installations

mnem is a mnemonic that indicates why the handset did not hand off to this candidate:

Unkn	reason unknown

Weak	signal strength too weak

Rate	One or more basic rates not supported

Full	AP cannot handle bandwidth requirements

AthT	Authentication Timeout

AthF	Authentication Failure

AscT	Association Timeout

AscF	Association Failure

SecT	Security Timeout

SecF	Security Failure

Cnfg	Configuration error—AP is not configured correctly (check
	security, QoS mode, or network infrastructure)

Diagnostics Screen 4 displays the following information:

AssocCount nnnnn

ReAssocCount nnnnn

AsssocFailure nnnnn

ReAssocFail nnnnn

where

AssocCount is the association count since power up. ReAssocCount is the reassociation count since power up. AssocFailure is the number of association failures since power up. ReAssocFail is the number of reassociation failures since power up.

Diagnostics Screen 5 displays the following information:

Sec-ErrCount nnnnn

LstSecErrSeq nnnnn

where

Sec-ErrCountis the security error count since power up. LstSecErrSeq is the MAC frame sequence number with the last security error.

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 206

Nortel Networks NN43001-504 manual Diagnostics Screen 4 displays the following information

Contents

Wlan IP Telephony Installation and Commissioning Page May Revision historyJune 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 Admin menu options for the Wlan Handset 6120/6140 Zones for wireless handsetsOpen and use the Admin menu on the handset Feature programming for the Wlan Handset 6120/6140 Wireless handset status messages New messages are Error Server Unavailable. Restarting 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 Overview Subject Applicable systems System migration NTPs ConventionsResources Online Shielded cable Wireless telephone network descriptionDeclaration of conformity Wireless telephone network description Typical wireless telephone network conﬁguration Call Server Firewall Dhcp ServerTftp Server Wlan Handset 2210/2211/2212 and Wlan Handset 6120/6140 Components Licenses Wi-Fi MultimediaLanguage Wi-Fi Protected Access2 Wired Equivalent PrivacyWi-Fi Protected Access Push-to-talk feature Wlan IP Telephony Manager Loud noise environments Access Points Wlan Application Gateway Loss of signal Handset switchoverHandset switchover Overview Planning Challenges of integrating voice applications High overhead Rate scaling and variable capacity Power adjustments and variable capacity Quality of Service Dhcp server planning Dhcp server planning Tftp Server planning Sample Dhcp reservation showing assigned parameters 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 Mobility requirements Effective site surveyNetwork usage 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 Sample Access Control List Network management 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 Example Ssid options and limitations Layer 3 implementation Single telephony Vlan implementation Capacities Installation requirementsWlan IP Telephony Manager 2245 planning Group capacities Wlan IP Telephony Manager 2245 groupsMaster Wlan IP Telephony Manager Wireless Managers Total Handsets 2245 Calls Erlangs 10% use 15% use 20% use Telephony Managers 2245 2245-10 2245-20 Not applicable Wlan IP Telephony Manager 2245 planning Gateway and timing function Access points on the same subnetMobility across different subnets when using Dhcp Roaming and handover Placement guidelines for the Wlan IP Telephony Manager Multicast 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 Alias IP address Wireless telephone type designationCodecs Call blocking Jitter buffer RLR and SLR Virtual Ofﬁce Gain adjustmentProgrammable rings and tones Branch Ofﬁce Survivable Remote Gateway External Applications Server End-to-end QoS NAT Traversal feature Network conﬁgurations VPN design over a Layer 2 network VPN design over a Layer 3 network Not recommended VoWLAN design Wlan IP Telephony Manager 2245 in a NAT environment Dhcp Server location 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 features CS 1000 not supported Feature Feature full name Description IP Phone 2004 features XAS Supported on the Wlan Feature Handsets Description KEM Installation Required materials Supplied equipment Preinstallation checklistWlan IP Telephony Manager 2245 installation tasks About the front panel Wall-mount Wlan IP Telephony Manager 2245 front panel Rack-mount Procedure Wall-mounting the Wlan IP Telephony ManagerProcedure Rack-mounting the Wlan IP Telephony Manager Procedure Connecting the power Wlan Application Gateway 2246 installationPower connection 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 Procedure Saving the conﬁguration Save the conﬁguration Conﬁgure the Wlan IP Telephony Manager Changing the master IP address Conﬁgure the Wlan IP Telephony Manager 2245 Change the password Procedure Changing 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 Failed master Wlan IP Telephony Manager Procedure Replacing a Wlan IP Telephony ManagerReplacing a Wlan IP Telephony Manager Replacing the failed Wlan IP Telephony Manager Changing the master Wlan IP Telephony Manager Wireless handset scenariosRemoving a Wlan IP Telephony Manager 2245 from the system View software version Procedure Viewing the software version Software updatesFor a wireless handset For the Wlan IP Telephony Manager Update software on a wireless handset Update software on the Wlan IP Telephony ManagerUpdate software on the Wlan Application Gateway Lock the system Step Action Select Find Products A-Z Normal download messages Wireless handset download messagesDisplays Normal download messages Message Description Download failure or recovery messages Failure and recovery messages Message Description Error Status screen TroubleshootingTroubleshooting the Wlan IP Telephony Manager Network Status screen Software Version Numbers screen Speed or duplex mismatch Troubleshooting the Wlan Application GatewayTroubleshooting the handset Context Access Point problems Conﬁguration problems No ring Dropped callsDuplex mismatch Far-end echo Wireless handset status messages Message Description Action Message Description Action Message Description Action Press Power On/Start Call Battery Low messagePower Off/End Call. Place 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 Using Call Server overlay commands LD 32 IDU command LD 117 Stip command LD 32 Stat commandLD 117 Inventory command TPS CLI commands DsetShow command IsetCount and isetGet E2dsetShow commandIsetReset and isetResetAll IsetShow, isetShowByTN, and isetShowByIP UmsKernalJobsShow and umsUpgradeAllUmsPolicyShow and umsUpdatePolicy UsiLibTrace Determining alias IP addresses Troubleshooting coverage issuesBefore calling Nortel Technical Support Before calling Nortel Technical Support Troubleshooting Appendix a Wlan Application Gateway NTTQ65AB NTTQ65BA Wlan Application Gateway 2246 connections System overviewModel number Number of users Ethernet switch connections Front panel Third-party applications NTTQ65xx Installing in an existing system InstallationInstalling with a new system Nurse-call systems Procedure Installing the Wlan Application Gateway Conﬁguring the Wlan Application Gateway 2246 IP address Conﬁguration 04830130 Enter Administration console navigationTask summary list Conﬁguring the OAI Box Conﬁguring network parameters 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 Connecting through Telnet Continuing conﬁguration through Telnet Procedure Conﬁguring a telephone line Conﬁguring the Telephone Line Deleting a handset Procedure Deleting a handsetProcedure Searching for a handset Searching for a handset Feature programming Procedure Programming a feature System status Setting or changing a passwordProcedure Setting or changing a password Procedure Viewing system status Network status Viewing the network status Software versions Certiﬁcation testing Software ﬁles File name Description Software updatesSoftware Obtain software using FTP Procedure Transferring the software using FTP Tftp software updates Systems Procedure Loading software updates Dialing Port MAC Address User Name Ext IP Address if static Planning Worksheet for HandsetsHandset Planning Worksheet Free the serial port for administrative purposes Appendix B Troubleshooting Wlan IP Telephony installations Site data-gathering tables 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 Cisco access points and switches Nortel switchesNortel Wlan Security Switch Cisco Aironet 1200 Series Parameter Setting Importance Wlan Security Switch 2270 notes Speciﬁc Cisco conﬁguration examples 1230 connected with 2950 and 2245 connected with 2950 1230 connected with 3560 and 2245 connected with 6509 Connected the APs Connected to General Wlan conﬁguration AP1230 Connected to APs Dhcp server options Dhcp 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 Typical call-related issues Issue Type Check for TroubleshootingCall or signalling-related issues Diagnosis ﬂows Voice-quality issues Typical voice quality issues Issue Type Check for Handset error messages Handset error messages Short Error code Description Action Timing Wlan IP Telephony Manager Handset to To the AP Short Error code Description ActionTiming information Diagnostic Tools Run Site Survey for the Wlan Handset 2210/2211/2212 Ssid Ab7bc8 -28 100 2ae578 -48 200 2ae596 -56 Any Detl Alpha Diagnostics Mode SAWA2 Diagnostics Screen 4 displays the following information Syslog Mode Syslog message contents Contents Syslog message Contents Audio stats AStat Radio stats NStat Syslog reason codes Reason code Meaning Number AP TOO Busy Action Timeout Reason code Meaning Number Questions Data checklistData capture Site-data required for the capture analysis Dhcp scope Network diagram Syslog capture conﬁguration Signaling Server log capture Procedure Using the CLI to capture a Signaling Server log Procedure Obtaining the wired and wireless captures General data capturePage Network speech levels Click Get Assert Data References Source and type Title Revision Comments Reference documentsNetwork speech levels Source and type Title Revision Comments Ieee Source and type Title Revision Comments Appendix C Compatible Access Points Compatibility Symbols/Numerics Index Index Wlan Page Wlan IP Telephony Installation and Commissioning