EDG's specialisation in control systems has lead, over the years, to extensive telecomms project experience and expertise.

EDG provides a comprehensive range of engineering services in the closely related fields of telecommunication and information technology. The full range of services for complete project implementation are covered, from initial feasibility studies through specifications to final acceptance testing. In addition, EDG undertakes audits of telecomms installations, radio propagation and frequency surveys as well as acting as expert advisers in the case of litigation. The type of services provided are detailed below 

• Telephone switching systems in stand alone and networked applications, including centrex and virtual private networks
• Automatic call distribution systems
• Voice processing systems
  • recorded announcement
  • auto attend
  • voice mail
  • linked computer-telephony applications (CSTA) particularly for sales and booking applications

• Voice compression
• Call management systems
  • historic and real time
• Specialised systems
  • control rooms
  • dealing rooms
  • hazardous areas
  • severe environmental areas
• Mobile communications / cordless telephony /WAP / 3G
• Building cable schemes and cable management systems
• PSTN / ISDN operation
• Packet switched networks, public and private
• Wide area networking
• Local area networking
• Combined data and voice applications
• Message switching
• Facsimile
• Email and Web
• CCTV
• Video conferencing
• CATV and cable television systems
• Radio systems
  • microwave
  • VHF / UHF
  • troposcatter
  • satellite links
  • meteor burst

In addition to the above EDG offer specialist air traffic control telecommunication expertise. These specialist activities are normally attributed to ICAO Annexes 3 & 10, relating to the various fields in aeronautical telecommunications and meteorology. In addition, the supplementary engineering aspects of air traffic control consoles, meteorological office layout and design, as well as equipment shelters, briefing rooms and communication centres are also undertaken, as well as instruction and training.