144Troubleshooting
Determining alias IP addresses
When diagnosing network problems, (for example, to ping the wireless handset), it is useful to know the mapping between the alias IP addresses as displayed by various Call Server commands and the physical IP address of the wireless handset. There is no single command that provides this information; however, the administrator can determine it in two ways:
1.If the wireless handset IP address is statically configured, the administrator can look at the IP address of the wireless handset using the Admin menu, which is available when the wireless handset is powered on.
2.After the wireless handset is operating and in standby mode, the administrator can look at the User Preferences menu to find the alias IP address of the wireless handset.
For more information, see WLAN Handsets Fundamentals
Troubleshooting coverage issues
Coverage issues are best resolved by adding and relocating APs as required. Overlap issues can be resolved by reassigning channels to the APs or by relocating the APs. For more information, see Appendix "Troubleshooting and diagnosis of WLAN IP Telephony installations" (page 173).
Before calling Nortel Technical Support
To facilitate the handling of the call, obtain the following information and have it available when placing a call to Nortel Technical Support:
•software versions on the wireless infrastructure, such as the APs
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•a more refined site survey of the area having issues using the wireless handset in Site Survey mode
•list of the PBX and LTPS software versions, including a list of patches
•WLAN IP Telephony Manager 2245 and handset firmware versions
•WLAN IP Telephony Manager 2245 configuration menu screen captures
•any error messages displayed in the Error Status screen of the System Status Menu of the WLAN IP Telephony Manager 2245
Nortel Communication Server 1000
WLAN IP Telephony Installation and Commissioning
Release 5.0 15 June 2007
