About Corelatus

Corelatus is a privately held company registered in Stockholm, Sweden. Corelatus was founded in 2000.

Corelatus specialises in products which interface to the telephony network through the E1, T1, STM-1/OC-3 and STM-4/OC-12 interfaces. Our customers are system builders who create solutions for telecommunications operators.

Products designed and manufactured by Corelatus are in live operation in a wide variety of systems, including national telephone networks in more than 40 countries around the world.


  • ULF SVARTE BAGGE (M. Sc.) has 25 years of hardware design experience from military, public, private and cellular telecom. Ulf was previously involved in system design and has worked in more than 20 countries.
  • JOHN FULLEMANN studied phenomenology and the history of religions at Wesleyan U, Ct.
    From 1971-83 he built recording studios and electroacoustic instruments with Studio Consultants Inc. and then Magic Boxes Co. in NYC.
    From 1984-91 he designed public display terminals for Alfabox AB in Stockholm and from 1991-2001 he designed datacom & telecom hardware for IBM, Telia & Ericsson in Stockholm.
  • THOMAS LANGE has more than twenty years' experience of working with telephony systems, in particular the interface between custom VLIW processors and embedded operating systems, including embedded Linux.
  • MATTHIAS LÄNG (B.Eng, hons) has worked in application design for both mobile and fixed telephone systems. He has a decade of experience in implementing low-level protocol termination. Prior to joining Corelatus, he was at the Ericsson Computer Science Laboratory.

Environment and Manufacturing

Corelatus pays attention to the resource consumption of our products, in production, in use, and at end-of-life. See also: environmental policy.