Established in February, 2000, Korea MutalTech, Inc. is now a leading company with many patent technologies including PC-based gateways, caller identification(CID) systems, and others. Using the Unicall and EverFree trademarks, Korea MutalTech has introduced many products such as the CID-based CRM (customer relationship management) systems,human resource management systems, substitute driver systems, worker management systems, CID systems, CTI and ITI engines, and so on.

Korea MutalTech will introduce a product unifying wire and wireless products based on technology that integrates PSTN (public switched telephone network) and Internet telephone networks. It has developed and sold products based mainly on embedded software technology and object-oriented technology. Also, it is consulting on methods that can efficiently develop the best software.

This is an app operated by the company.
https://play.google.com/store/apps/details?id=kmt.webrtc.unicalle&pli=1
https://apps.apple.com/app/1611660162