Audio Distribution Service

40 yearsof experience in defence
250,000+military personnel trained
100+military veterans hired yearly
Screenshot of an audio distribution system interface with map, file selection, and various controls for adjusting audio channels and settings displayed on a dark background.

Audio Distribution Service (ADS)

Advanced interoperability solution for military training and analysis

ADS, the audio distribution service, is built on Paradigm architecture. ADS provides a framework for integration, interoperability and virtualization of tactical and other voice networks. ADS enables data capture of up to 100 combat net radios (CNR) concurrently.  

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ADS server architecture

The ADS Server software is structure into core services, adaptors and simulation adapters. These include the following:

Connection stack

Connection management, audio/data routing, network grouping and bridging

Audio stack

Audio transcoding, metadata packaging and speech recognition

Storage stack

Audio recording, metadata logging, playback / AAR, communications log

C4ISR adapters

Provide the links between ADS Core Services and connected applications. They do not require modification of client software or hardware on connected services

Simulation adaptors

Provide the links between ADS Core Services and Voice services provided in LVC Simulation systems and services

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Calian provides end-to-end defence training

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Learn how ADS transforms tactical voice networks with virtualization and seamless integration.

ADS server capabilities

ADS Server enables integration of all tactical communications voice systems into a single virtual service distributed to multiple clients over IP bearers.

A Panasonic Toughpad FZ-M1 displaying a network management interface with various icons and lists, accompanied by descriptive annotations around the screen.
ADS server connections are designed to operate half-duplex to match tactical voice procedures and use low-rate IP codecs and multicast, making transmissions more efficient over broadcast bearers. 
Three soldiers in camouflage uniforms review a document with a man in civilian clothing on a reflective surface outdoors.
Allows bridging of multiple nets together, no matter the underlying bearer. Virtualization supports the following functions:

  • Voice recording and playback 
  • Automatic speech-to-text. 
  • Integrated File Transfer 
  • Integrate XMPP- compliant Text Chat. 
  • Automated communications logging. 
  • Local nets


ADS servers support the creation of internal nets as staff intercom facilities are needed. 

A soldier is using a tablet computer.
ADS Server incorporates specialist server services including: DHCP, IP Router, XMPP ADS client application. It is lightweight, running on a Windows 10 laptop. 

ADS Client components include:

  • Net connection management
  • Net-specific user preferences.
  • Net activity indicators 
  • Voice playback
  • XMPP-compliant text chat client 
  • File transfer interface 
User interface of a radio log system showing options for network selection, transcription control, and various settings. Features include a search bar, buttons, and dropdown menus for user interaction.
The automated capture and storage of voice traffic by ADS improves operational record keeping.  

ADS and VCCI databases are interoperable, enabling capture of voice and data traffic. This data facilitates AAR, operational analysis and exploitation.  

Leading the way in synthetic training environments

Calian has innovated alongside the Canadian Army Simulation Centre for over 20 years to create immersive and highly secure synthetic training environments, capable of delivering comprehensive training for any potential threat. 
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