Kallastra designs, develops and markets Voice over Packet processing boards and telecom appliances for the Voice over Internet Protocol (VoIP) markets.  Kallastra has a strong background in Voice over Packet designs, in areas such as ATM, IP, Echo Cancellation, Voice Quality Enhancement and Conferencing. This expertise is harnessed to create flexible telecom solutions for integrators and network operators.

The KeyTrunk 300 series helps integrators solve the scalability issues inherent with computer telephony designs using an efficient TDM over Ethernet protocol.

The KeyTrunk 500 series builds from the KeyTrunk300 series features by introducing media processing functions that are key in the design of VoIP platforms: Echo Cancellation, Voice Quality Enhancement, Conferencing, Prompt Playback, DTMF Tone Relay.