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SpectraLink Corporation Configuration and Administration—NetLink e340/i640 Wireless Telephone
Mitel Networks 3300 and SX-200 ICP and 5220 IP Phone emulation
PN: 72-1084-02-G.doc Page 51
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.