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SpectraLink Corporation Setup and Administration–NetLink e340 & i640 Wireless Telephone
NetLink Telephony Gateway and SpectraLink Radio Protocol
PN: 72-1065-09-E.doc Page 30
8. Troubleshooting
NetLink e340 and i640 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 Wireless Telephones, consider the following
problem sources to determine the best method of approaching any specific situation.
8.1 Access Point Problems
Most, but not all, Wireless Telephone audio problems have to do with access point range,
positioning and capacity. Performing a Site Survey as described above can isolate the
access point causing these types of problems. If the Wireless Telephone itself is
suspected, conduct a parallel Site Survey with a Wireless Telephone 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
Telephone 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
Telephone. 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.
8.2 Configuration Problems
Certain problems are associated with improper configuration of either the NetLink
Telephony Gateway, Wireless Telephone, or NetLink SVP Server.
For instance, no extension displayed or wrong extension displayed on the Wireless
Telephone has no effect on its operation but serves to easily identify it. Other
configuration problems, like having incorrect menu items, or inability to connect or
access telephone system features, affect the Wireless Telephone’s functioning.
Configuration problems are generally corrected by changing the configuration at the
NetLink Telephony Gateway, the NetLink SVP Server, or on the Wireless Telephone.
See the NetLink Telephony Gateway: Installation, Setup, and Maintenance document for
specific configuration steps. There may also be incorrect programming of the PBX or