NATJA, the VoIP telephone system

The very high voice quality requirements for telephony in Germany could not be met with the H.323 standard originally used for VoIP. For its NATJA VoIP telephone system, DAFÜR therefore developed its own protocol, which is more than 96% compatible with the SIP protocol that came onto the market years later.

The outstanding feature of NATJA is its simple and intuitive operation, which strongly resembles the interface of today's smartphones.