Nortel Networks NN43001-504 manual Access Point problems, Configuration problems

Troubleshooting the handset 123

•At what location did the problem occur?

Record this information and provide it to the system administrator or Nortel Technical Support.

Access Point problems

Most, but not all, wireless handset audio problems are related to AP range, positioning, and capacity. Performing a Site Survey as described in "Site survey" (page 41) can isolate the AP causing these types of problems. If the wireless handset itself is suspected, conduct a parallel site survey with a wireless handset that is known to be functioning properly.

The following are some situations that can cause wireless handset difficulties to occur:

•In range/Out of range—service is disrupted if a user moves outside the area covered by the WLAN APs. Service is restored if the user moves back within range. If a call drops because a user moves out of range, the wireless handset recovers the call if the user moves back into range within a few seconds.

•Capacity—in areas of heavy use, the call capacity of a particular AP can be filled. If this happens, the user hears three chirps from the wireless handset. The user can wait until another user terminates a call, or move within range of another AP and try the call again. If a user

is on a call and moves into an area where capacity is full, the system attempts to find another AP. Due to range limitations, this can be the same as moving out of range.

•Transmission Obstructions—before system and AP installation, the best location for APs for optimum transmission coverage is determined when a site survey is performed. However, small pockets of obstruction can still be present, or obstructions can be introduced into the facility after AP installation. This loss of service can be restored by moving out of the obstructed area, or by adding more APs.

Configuration problems

Certain problems are associated with improper configuration of either the WLAN IP Telephony 2245, the optional WLAN Application Gateway 2246, or the wireless handset.

Configuration problems are generally corrected by changing the configuration on the WLAN IP Telephony 2245, the WLAN Application Gateway 2246, or the wireless handset.

There can also be incorrect programming of the APs. For compatibility and configuration information about the APs in use at the site, see Appendix "Compatible Access Points" (page 223).

Nortel Communication Server 1000

WLAN IP Telephony Installation and Commissioning

NN43001-504 01.02 Standard

Release 5.0 15 June 2007

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