122 TroubleshootingThis information helps to determine if the most recent software version isrunning. This information assists Nortel Technical Support in troubleshootingsoftware problems.Speed or duplex mismatchA duplex mismatch on the WLAN can cause the WLAN IP TelephonyManager 2245 to not operate properly. Double-check WLAN connectionsand interfaces to ensure that they are all configured as full-duplex.In rare instances, the message Speed or Duplex mismatch error can occurduring the bootup sequence of the IP Telephony Manager 2245.If this situation occurs, verify all devices connected to the WLAN IPTelephony Manager 2245 are configured correctly and no duplex mismatchis found. If all configurations are correct, reboot the IP Telephony Manager2245. The error message must be cleared.Nortel recommends that you• do not configure the Ethenet Link, on the SVP-II Configuration screen,to auto-negotiate.• use either 100/full or 10/full, as is appropriate for the network.• configure the ethernet switch port to match the 2245 Ethernet Link.Troubleshooting the WLAN Application Gateway 2246For information about troubleshooting the optional WLAN ApplicationGateway 2246, see Appendix "WLAN Application Gateway 2246" (page147) "Configuring network parameters" (page 155).Troubleshooting the handsetTransmission problems can result from any number of factors originatingfrom the wireless LAN. Wireless handsets can exhibit transmissionproblems in several ways. They can cease functioning properly, displayerror messages, or display incorrect data. When using and troubleshootingwireless handsets, consider the following problem sources to determine thebest method of approaching a specific situation.ContextWhen troubleshooting a problem with a wireless handset, it is important todetermine the context of when and where the problem occurred. Contextincludes the following:• Was the wireless handset on an active call?• Was the wireless handset moving or stationary?• Was the wireless handset powering on or powering off?• Was PTT being used?Nortel Communication Server 1000WLAN IP Telephony Installation and CommissioningNN43001-504 01.02 StandardRelease 5.0 15 June 2007Copyright © 2004-2007, Nortel Networks.
