Ericsson is less aggressive about private cellular networks than Nokia, mainly because it pulled back more sharply from selling systems or services directly to enterprises, with the risk of sidelining and alienating MNO customers. However, it is increasingly building up resources to support private and industrial deployments, even though it aims to use the operators as the main channel. Its latest move is an agreement to acquire Genaker of Spain, a provider of systems for mission critical push-to-talk (MC-PTT), which is foundational to many public safety, emergency relief and also many industrial applications. Old-style MC-PTT is evolving from voice and messaging to include instant, ultra-reliable group communications for images and video too. It will increasingly use standard cellular technologies rather…