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Troubleshooting
Wireless Installation and Configuration Guide Page 61
IP Office [15-601082] Issue [1] (1 June 2006)
Wireless Phone Troubleshooting
Introduction
Wireless phones can exhibit transmission problems in several ways. They can cease functioning
properly, display error messages, or display incorrect data. When using and troubleshooting wireless
phones, consider the problem sources described in this section, to determine the best method of
approaching any specific situation.
Access Point Problems
Most, but not all, wireless phone audio problems have to do with access point range, positioning and
capacity. Performing a Site Survey as described in the Setup and Maintenance document can isolate the
access point causing these types of problems. If the wireless phone itself is suspected, conduct a
parallel Site Survey with a wireless phone that is known to be properly functioning.
In Range/Out of Range
Service will be disrupted if a user moves outside the area covered by the wireless LAN access points.
Service is restored if the user moves back within range. If a call drops because a user moves out of
range, the wireless phone will recover 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 access point may be filled. If this happens, the
user will hear three chirps from the wireless phone. The user can wait until another user terminates a
call, or move within range of another access point 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 access point. Due to range
limitations, this may be the same as moving out of range.
Transmission Obstructions
Prior to system installation, the best location for access points for optimum transmission coverage was
determined. However, small pockets of obstruction may still be present, or obstructions may be
introduced into the facility after system installation. This loss of service can be restored by moving out of
the obstructed area, or by adding access points.
Configuration Problems
Certain problems are associated with improper configuration of either IP Office or the wireless phone.
Configuration problems are generally corrected by changing the configuration on IP Office or on the
wireless phone. See IP Office Configuration and Wireless Phone Configuration for specific configuration
steps.
There may also be incorrect programming of the access point. See the Configuration Note for the access
point in use at the site.
If IP Office registration fails, note any error messages on the display including which line icons are
active. This information will help with the problem resolution.