Background
Spectralink 8020 8400 wifi phones are full featured native SIP/WiFi devices that work well with Sipx. Sipx 4.2.1 and later require a version of 8020 firmware that as of 5/19/11 is not available without out calling Polycom support. It will then be provided free of charge. They want to track who all is using, but do plan to make it publicly available with their next firmware release.