1 access point problems, 2 configuration problems – SpectraLink NetLink e340 User Manual
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SpectraLink Corporation
Configuration and Administration—NetLink e340/i640 Wireless Telephone
Cisco CallManager and IP Phone 7960 Emulation
72-1082-02-F.doc
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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 AP 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 APs. 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
CallManager or the handset.
Configuration problems are generally corrected by changing the configuration at the
CallManager or on the Wireless Telephone. There may also be incorrect
programming of the AP. See the Configuration Guide for the AP in use at the site.
Configuration guides are available from
If CallManager registration fails, note any error messages on the display including
which line icons are active. This information will help with the problem resolution.