4iG called the acquisition "a significant step" in the implementation of its telecommunications market growth strategy.

"In the construction of 4iG's telecommunications portfolio, Invitech's optical backbone network and other data transmission solutions, as well as business communication services, will provide outstanding synergy and growth opportunities," it said.

Invitech is a leader on Hungary's telecommunications and IT network infrastructure services market. It has a staff of over 600, some 5,000 clients and the country's second-biggest optical trunk network.

Invitech had revenue of HUF 24.8 billion last year.