Backbone Repeater

Ethernet Repeater

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Backbone Repeater

  • Specifically intended to extend two Ethernet Train Backbone (ETB) links
  • Two completely separated and independent Ethernet Repeaters into a single device
  • Independent power supply unit on each line 
  • 2x FE + 2x FE ports
  • 2x Fast Ethernet lines repeated
  • Transparent to all Ethernet protocols
  • Power supply 24 ÷ 110 Vdc available
  • Compliant with EN 50155 standard
  • Compliant with EN 45545 standard
  • Extended temperature range -40 °C ÷ +85 °C available

VDS Rail's Backbone Repeater is an EN 50155 compliant device specifically designed for network applications in Rolling-Stock environments, able to regenerate the Ethernet frame data and the electrical parameters to overcome the 100m maximum Ethernet segment limit imposed by the standard.

VDS Rail's Backbone Repeater is specifically intended to be placed between two (2) Ethernet Train Backbone Nodes to extend the Ethernet Train Backbone (ETB) links.



Wide Range of products available

The Backbone Repeater has two (2) + two (2) 100BASE-TX ports.



Highest Reliability ensured
  • Two (2) protected independent Ethernet lines
  • Independent power supply unit on each line 
  • Fault relay, triggerable by loss of power or Ethernet physical error detection

Main technical specifications

  • IEEE 802.3 Standard Physical layer: 10BASE-T, 100BASE-TX

Physical data

  • Connector type: M12 
  • Power supply: 24 Vdc ÷ 110 Vdc
  • Interruption voltage supply class: S2, according to EN 50155
  • Power consumption: 7 W max
  • Overall dimensions: 165 x 133 x 47 mm
  • Weight: 1.0 Kg
  • Operating temperature: -25 °C ÷ +70 °C (+85°C for 10 min. according to EN 50155 class OT3 with extended operating temperature ST1) or -40 °C ÷ +70 °C (+85°C for 10 min. according to EN 50155 class OT4 with extended operating temperature ST1)
  • Storage temperature: -40 °C ÷ +85 °C
  • Degree of protection: IP65

Main approvals/compliance

  • EN 50155: Railway Applications (Electronic equipment used on rolling stock)
  • EN 61373: Shock & Vibration
  • EN 45545: Fire & Smoke
  • IEEE 802.3: Ethernet Network Standard