Advancing UK Aerospace, Defence, Security & Space Solutions Worldwide
  • Home
  • /
  • Defence
  • /
  • C4i delivers MoD secure voice communication system

Defence

C4i delivers MoD secure voice communication system

C4i Pty Ltd, a Melbourne-based secure voice communications company, has delivered its VOICE C2 voice over IP (VoIP) communication system (VCS) for the Ministry of Defence (MoD) Guardian project, providing the UK’s new Air Command and Control System.

Image courtesy Frequentis

C4i Pty Ltd, a member of the Frequentis Group since 2021, is subcontractor to IBM. IBM Consulting in the UK are the Prime contractor leading the programme to develop and install the replacement system.

The Guardian project is replacing current systems at RAF bases in the UK with new technology allowing the RAF to enhance its air situation picture in support of continued early detection and rapid response of suspected aircraft threats. Replacing the existing Royal Air Force (RAF) VCS with the new VOIP based system from C4i provides enhanced flexibility, capability and security , as well as reducing overall life cycle costs.

Advertisement
ODU RT

The new system, already in full time operations at RAF Boulmer, will connect the UK’s defence radars and radio network, as well as delivering new capabilities to improve communication and interoperability between UK, NATO and coalition aircraft, which is essential to the protection of the UK’s skies.

“The installation of the UK’s new air command and control system at Boulmer is the first step in this project to deliver enhanced capability to deal with the increased demands of UK airspace and essential surveillance of its skies, supporting the MoD and NATO tasks. We are pleased to be providing the essential communications for the defence of the UK, supporting the transition to digital technologies to support future capabilities,” said Darren Gardner, Managing Director C4i Pty.

Installations for other vital parts of the voice control system are continuing in other locations throughout the UK.

VOICE C2 is an advanced IP communications system based on simplified hardware and software components that, when combined, deliver a sophisticated communications platform. The system provides users with the ability to access and control radio, telephony, intercoms and paging systems using a single intuitive GUI. It enables customers to operate securely and seamlessly across multiple security enclaves while maintaining isolation as required.

Specifically designed for fixed and deployable air defence environments, VOICE C2 Red/Black platform is operationally proven and purpose-built, it is in active use around the world including for Australian defence forces and the US Department of Defense (USAF, US Army and US Marine Corps).

With integrated Classified and Unclassified modes of operation, the system provides operators with internal and external communication and conferencing capabilities via a range of air and ground-based communication networks. Operators have simultaneous access to Red and Black Air/Ground and Ground/Ground communication channels from a single console.

Advertisement
ODU RT

 

 

Advertisement
IAI Awareness Banner
ACM Sir Richard Knighton takes over as Chief of Defence Staff

Defence

ACM Sir Richard Knighton takes over as Chief of Defence Staff

2 September 2025

Outgoing Chief of Defence Staff Admiral Sir Tony Radakin handed over today to his successor, Air Chief Marshal Sir Richard Knighton.

British Army

Defence

British Army's new Kendrew Barracks' accomodation block completed

2 September 2025

New accommodation for British Army service personnel at Kendrew Barracks has been completed under a major investment programme that is improving living conditions across the Army estate.

Babcock and PGZ expand sea and air domain solutions

Defence Events

Babcock and PGZ expand sea and air domain solutions

2 September 2025

Babcock has signed a strategic cooperation agreement (SCA) with PGZ SA, the Polish Armaments Group, to expand their collaboration across sea and air domains.

Altair to demo AI-powered engineering and advanced connectivity at DSEI

Defence Events

Altair to demo AI-powered engineering and advanced connectivity at DSEI

2 September 2025

Altair will demonstrate the transformative power of artificial intelligence (AI)-powered engineering, smart manufacturing and advanced connectivity at DSEI 2025, taking place next week (9th-12th September) at the ExCel Centre in London.

Advertisement
ODU RT
Roke extends ZODIAC support for British Army

Defence

Roke extends ZODIAC support for British Army

2 September 2025

Roke has secured a £20 million contract with the British Army to ensure that Project ZODIAC continues to be optimised for the frontline.

Norway selects British warships

Defence

Norway selects British warships

1 September 2025

Billions of pounds will be pumped into the UK economy following Norway’s decision to select British warships for their Armed Forces – securing thousands of jobs in Britain for years to come.

Advertisement
DSEI 2025