Page 134 of 206 Troubleshooting
553-3001-304 Standard 3.00 September 2004
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” on page 32 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 may
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 may be the same as moving out
of range.
•
Transmission Obstructions – before system and AP installation, the
best location for APs for optimum transmission coverage was
determined when a site survey was performed. However, small pockets
of obstruction may still be present, or obstructions may 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.
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