Compute gateways for connected trains, light rail and buses

TRX R6 provides compute gateways for connected trains, light rail and buses. It is a combined hardware and software solution running KlasOS Keel allowing a range of applications to be supported on a single platform.

Supported applications include Passenger Wi-Fi, Infotainment and Passenger Information Systems, CCTV and TCMS access.

Open platform allowing the operator to add features over time.

Key Features:

  • Combined router/server with mutiple CPU options
  • Dual-core Intel® Celeron® Processor G Series
  • 6th Generation Intel® Core™ processors with dual-core i3, quad-core i5 and quad-core i7
  • Support for six cellular modems (3G / 4G / 5G), Wi-Fi and Ethernet for connectivity
  • Supports MVB, RS-422, RS-485 and GPS for telematics
  • Integrated KlasOS Keel to supports third-party virtual machines
  • Easily managed through integrated Keel CLI or SNMP via single IP address
  • Firewall, captive portal and load balancing
  • SDWAN tunnelling provides reliable connectivity over multiple WAN links with variable bandwidth
  • Integrates with existing PKI infrastructure, secure data transfers using Keel private device keys


Hardware Specifications

Server Features

  • Processor options available:
  • Dual-Core Intel® Celeron® G3900E
    • 2.4 GHz clock rate
  • Dual-Core 6th Gen Intel® i3-6102E
    • ◊ 1.9 GHz clock rate
  • Quad-Core 6th Gen Intel® i5-6442EQ
    • ◊ 1.9 GHz clock rate
  • Quad-Core 6th Gen Intel® i7-6822EQ
    • ◊ 2.0 GHz clock rate
  • Intel® Virtualization Technology (VT-x) with IPMI
  • Up to 32 GB RAM
  • Internal storage with capacity of 16 GB
  • Dual removable 2.5” SATA Solid State Drive in sizes 256 GB – 4 TB

4G LTE Modems

  • Sierra Wireless MC7430 / EM7430 LTE Cat-6
  • Sierra Wireless MC7455 / EM7455 LTE Cat-6
  • Sierra Wireless EM7511 LTE Cat-12
  • Sierra Wireless EM7565 LTE Cat-12
  • Telit LM960 LTE Advanced Pro Cat-18

5G Modems

  • Telit FN980M
  • Quectel RG500Q-GL
  • Thales MV31-W


  • Reception of GPS, GLONASS, QZSS, BeiDou
  • High sensitivity acquisition and single-satellite timing
  • Automatic holdover

Wi-Fi Interface

  • IEEE802.11 ac/b/g/n modem with datarates of 1.3 Gb/s downlink
  • 3×3 MIMO
  • Supports 2.4 GHz and 5 GHz bands
  • Enhanced wireless security supporting 64/128-bits WEP, WPA, WPA2, 802.1x
  • Additional Wi-Fi interfaces supported via expansion slots


  • 6 x Gigabit Ethernet in X-Code M12 or RJ-45 format
  • 10 Gigabit Ethernet with M12 network connector

Expansion Slots

  • USB 2.0 and PCI Express signalling supports a range of devices per slot:
  • DTE RS-422/RS-485 serial devices to control remote devices
  • MVB
  • General purpose IO with galvanically isolated outputs

Physical Specifications

  • 9.8” W x 11” L x 3.05” H (250 mm x 279 mm x 76.5 mm)
  • 9.9 lb / 4.5 kg

Electrical Specifications

  • 24 – 110 VDC
  • Power consumption
  • 60 W including 6 modems, excluding PoE
  • 160 W when all PoE ports are in use. 48 VDC input required

Software Specifications


  • Software Defined WAN (SD-WAN)
  • Static Routing
  • Virtual Switch (vSwitch)
  • NAT (PAT)
  • 802.1q VLAN
  • Access Control Lists (ACLs)
  • DHCP Client/Server
  • NTP Client and Master
  • PKI

Supported Interfaces

  • Gigabit and 10 Gigabit Ethernet
  • Wi-Fi Client and Access Point
  • 5G, 4G/LTE and 3G/UMTS modems
  • GPS, GPS relay over IP/serial
  • Telematics via RS-485/422/232, MVB


  • Integrated KVM Hypervisor
  • vSwitch
  • Virtio and e1000 NIC options
  • USB and PCIe device passthrough
  • Serial port passthrough
  • Install Guest OS from ISO file or import from qcow2 image
  • Read-only Guest OS option

Guest Networking Features

  • Stateful Firewall
  • QoS
  • Captive Portal with rate limiting
  • Netflow


  • SSH, Telnet, console
  • Syslog
  • SNMP v1/v2/v3


  • EN50155:2017 Railway Applications – Electronic equipment used on rolling stock (EN50155: Heat, Cold, Insulation, Vibration and Shock), EN60068-2-1, EN60068-2-2, EN60068-2-30
  • EN61373:2017 Railway Applications – Rolling stock equipment Shock and Vibration
  • EN50121-3-2:2017 Railway Applications – Electromagnetic Compatibility – Part 3-2 Rolling Stock – Apparatus
  • EN45545-2:2015 Railway Applications – Fire Protection of Railway Vehicles – Part 2
  • EN55032 Electromagnetic Compatibility of Multimedia Equipment
  • RED Compliant
  • IP 54 Ingress protection
  • RoHS 2 Compliant
  • FCC/CE