ACTES CONSULTANTS TECHNOLOGY & ENGINEERING SERVICES GMBH  INFORMATION AND COMMUNICATION TECHNOLOGY Radio engineering • Mobile communication (e.g. GSM, TETRA, GPRS, UMTS, WIMAX, WLAN) • Trunking and paging networks • Tunnel radio equipment • Multiplexer, combiner and divider • Microwave links and networks • Satellite networks • Radio monitoring and surveillance stations Fixed networks • Optical fibre networks • Broad band networks (e.g. SDH, ATM with multiplexers) • Local Area Networks (LAN), Wide Area Networks (WAN) • Long distance networks • Virtual Private Networks (VPN) • Network management • Switches • Submarine cables • Backbone-networks • Integration of services – e.g. Internet – phone (Voice over IP), fixed and mobile network integration Information technology • Data security, encryption systems • Computer centres • Data processing for research, industry, administration, transportation • Data networks • Access control • Telemetry and telecontrol (SCADA) • Data bases • Data acquisition, measuring and early warning systems