sepura, digital mobile radio communication, tetra private digital mobile radio pmr, public safety radio communication systems, voice and data communications, tetra mobile radio applications, police fire and ambulance services communications, tetra memorandum of understanding mou, etsi tetra, tetra terminals and handsets including mobiles and handportablesSepura specialises in secure TETRA based digital private mobile radio voice and data communication systems for public safety users such as Police Forces, Fire Brigade and Ambulance Services