VoIP is becoming more common and practical. Essentially it relies upon transmitting audio data packets with low latency across broadband networks. This uses the SIP protocol.
Kphone/Pi is a port of KPhone to the Zaurus kphone setup guide
TkcPhone is another Zaurus VoiP program tkcphone homepage
A third application that might be worth trying is Linphone, which also has a gui front end; this may only work for sharp-based (non-OZ) ROMS, however Nautilus Linphone downloads & setup guide Zedkatuf 14:38, 18 Aug 2006 (PDT)
|VoIP software||There are at least two VoIP apps available|
|VoIP hardware||Headsets and connectivity options|