RADIUS Radio-over-IP (RoIP) Platform
Mission-Critical Radio & IP Communications Integration
RADIUS is a mission-critical Radio-over-IP (RoIP) platform that connects two-way radios, dispatch systems, SIP/VoIP networks, smartphones, and IP communications into a single secure operating environment. Designed for fixed, mobile, tactical, and deployable operations, RADIUS enables organizations to extend radio communications, integrate disparate systems, and maintain reliable voice and control across virtually any IP network.
RADIUS is deployed by public safety, defense, transportation, and critical infrastructure organizations to extend two-way radio communications over IP networks, enable interoperability between disparate radio systems, integrate SIP/VoIP communications, and provide secure communications across fixed, mobile, tactical, and deployable operations.
Purpose-Built for Mission-Critical Operations
The SyTech RADIUS platform unifies land mobile radios (LMR), dispatch workstations, SIP/VoIP systems, smartphones, and IP networks into a single, secure communications environment. Compatible with virtually any two-way radio—including Motorola, L3Harris, Codan, Kenwood, Icom, Tait, BK Technologies, and many others—RADIUS transports radio audio and control over IP without requiring changes to existing radio infrastructure.
RADIUS enables radio-to-radio interoperability, dispatch-to-radio communications, SIP/VoIP integration, and secure access for authorized mobile users. Support for push-to-talk (PTT), carrier-operated relay (COR), channel selection, and radio control allows geographically dispersed users to communicate as though operating on the same local radio network.
Designed for public safety, defense, transportation, and critical infrastructure, RADIUS delivers the deterministic performance, high availability, and long service life required for mission-critical communications.
RADIUS System Architecture
At the center of the RADIUS platform is the RADIUS Distribution Service (DS). The Distribution Service coordinates gateway connectivity, user authentication, audio routing, interoperability, and system-wide access control. Acting as the platform's control plane, it remains lightweight, deterministic, and independent of external cloud services.
Unlike traditional Radio-over-IP gateways that combine radio conversion and system management within each appliance, RADIUS separates these functions into two distinct layers. Gateway hardware performs real-time radio interfacing at the network edge, while the Distribution Service centrally manages routing, user access, interoperability, and policy enforcement across the entire system.
RADIUS may be deployed on customer-managed infrastructure, directly on a RADIUS Gateway, or within hosted environments when permitted by policy. The platform supports fixed, mobile, tactical, transportable, and air-gapped deployments without requiring external cloud services.
Flexible Deployment
RADIUS is built on a common software platform that can be deployed in multiple ways to meet operational requirements.
The RADIUS Distribution Service (DS) provides centralized routing, interoperability, user access, and system coordination. The DS may be hosted directly on a RADIUS Gateway or deployed on dedicated customer-managed infrastructure, allowing the platform to scale from a single gateway installation to large, multi-site communications networks.
RADIUS Gateway hardware interfaces directly with two-way radios while hosting RADIUS software services where appropriate. Running on a hardened embedded Linux operating system, gateways provide deterministic performance, secure operation, rapid recovery, and long service life in fixed, mobile, and tactical environments.
RADIUS can be deployed:
• On-premises within customer-controlled infrastructure
• At fixed dispatch or command sites
• In mobile command vehicles and transportable systems
• Within hosted or cloud environments when permitted by policy
Cloud hosting is optional. RADIUS does not depend on external cloud services and operates equally well within private, isolated, and air-gapped networks.
RADIUS Gateways
Purpose-Built Radio-over-IP Gateway Hardware
RADIUS Gateways are purpose-built Radio-over-IP appliances that connect virtually any two-way radio to secure IP networks. Designed for fixed, mobile, and tactical deployments, they provide reliable radio audio transport, remote radio control, and interoperability while minimizing hardware complexity.
Key Gateway Capabilities:
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Compatible with virtually all two-way radio systems
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Available in multiple port densities and deployment configurations
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Radio audio transport and remote radio control over IP
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Single IP address simplifies network deployment
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Write-protected embedded Linux OS—safe to remove power without shutdown procedures
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Front-panel LCD with real-time system status
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Compact, mission-ready hardware
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One-time perpetual licensing with no recurring subscription fees
RADIUS 1U
RADIUS 4P
RADIUS PacStar
RADIUS Client Software
Dispatch, Radio Control & System Management
The RADIUS Client is the primary user interface for the RADIUS platform. It provides dispatch personnel, radio operators, and system administrators with secure access to RADIUS Gateways and the Distribution Service through a single, intuitive application.
Designed for mission-critical communications, the client supports radio dispatch, remote radio control, interoperability, and SIP/VoIP integration while maintaining centralized user management and role-based access control.
Client Capabilities:
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Dispatch communications across radios, SIP/VoIP systems, smartphones, and IP networks
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Create and manage radio channels and RADIUS cluster groups
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User-profile-based access control and channel assignments
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Wide-area networking with RADIUS Multisite
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Remote control of supported public safety and military radios
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Push-to-talk (PTT) integration using USB desktop accessories
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Secure communications using TLS 1.3 encryption
RADIUS Client & Software
RADIUS Accessories
Complete the Platform
RADIUS Accessories are engineered to simplify system integration and support a wide range of operational requirements. From radio interface cables to dispatch peripherals and remote access solutions, each accessory is designed to integrate seamlessly with the RADIUS platform.
Accessory Categories include:
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Radio interface cables for supported two-way radio systems
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Dispatch accessories including push-to-talk (PTT) devices, foot pedals, headsets, and desktop interfaces
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Remote radio extension nodes for geographically distributed deployments
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Smartphone-to-radio integration for authorized mobile users
RIOS LiTE ATAK
SyTech Interface Cables
RADIUS Wireless Crewstation App
One Platform. Multiple Missions.
Whether deployed in a dispatch center, mobile command vehicle, tactical operations center, or transportable communications kit, RADIUS provides a common Radio-over-IP platform that adapts to mission requirements—not the other way around.
Next Steps
Every RADIUS deployment begins with understanding your operational requirements. Our engineering team works with you to determine:
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Your existing radio, dispatch, and IP communications systems
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Interoperability, coverage, or operational challenges
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Where the system will be deployed:
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Fixed-site facilities
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Mobile command vehicles
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Tactical or transportable systems
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Customer-managed or hosted environments
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From there, SyTech engineers a RADIUS solution tailored to your mission, infrastructure, and operational objectives.
