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SpectraLink Corporation Configuration and Administration—NetLink e340/i640 Wireless Telephone
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12. Troubleshooting NetLink Wireless Telephone Problems
NetLink Wireless Telephones can exhibit transmission problems in several ways.
They can cease functioning properly, display error messages, or display incorrect
data. When using and troubleshooting handsets, consider the following problem
sources to determine the best method of approaching any specific situation.
12.1 Access Point Problems
Most, but not all, handset audio problems have to do with access point range,
positioning and capacity. Performing a Site Survey as described in this document can
isolate the AP causing these types of problems. If the handset itself is suspected,
conduct a parallel Site Survey with a handset 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 handset 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 AP may be filled. If
this happens, the user will hear three chirps from the 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 –prior to system installation, the best location for APs 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 APs.
12.2 Configuration Problems
Certain problems are associated with improper configuration of either the MGCP
system or the handset.
Configuration problems are generally corrected by changing the configuration on the
MGCP system or on the handset. There may also be incorrect programming of the
AP. See the Configuration Note for the AP in use at the site.
PN: 72-1084-02-E.doc Page 51