// TEST r2p – Netspire™ Train Gateway Unit Netspire™ Train Gateway Unit
Passengers using smartphones at station as the train comes in

Netspire™ Train Gateway Unit

The NetSpire Train Gateway Unit (TGU) is a rail certified (EN50155), network enabled audio amplifier with audio and hearing loop support. The NetSpire TGU has integrated DSP and Digital Voice Announcement functions.

The TGU connect directly to a 100 Base T Ethernet network, communicate via TCP⁄IP with the NetSpire Train Communications Exchange (TCX) and may be configured remotely.

The TGU supports live PA and prerecorded DVA announcements to loudspeakers and hearing impaired inductive loops (HIILs) within a rolling stock environment.

The unit also supports passenger information displays and help Points. The amplifier modules are a 140 watt, 100V Class D audio amplifier module. The HIILs modules are 10A Class D amplifiers.

The unit also has redundant power supplies and can support 24V or 110V systems.


  • Up-to eight Class D Amplifier output channels (long form)
  • Up-to four Class D Amplifier output channels (short form)
  • Four balanced analogue audio inputs and outputs
  • Two isolated digital inputs W
  • eb configuration, diagnostics and logging
  • Integrated DSP processing
  • Integrated Digital Voice Announcement
  • Rollingstock Certified (EN50155)


  • Supports up-to 48kHz 24 bit PCM for network digital audio. Lower bit rate and compressed codecs are also supported
  • Supports up-to eight channels of 100V Audio, Low impedance Audio and Loop Current Amplifier modules
  • Supports speaker bus health monitoring and can detect and reports a fault in a single speaker on a bus
  • Supports audio frequency inductive loop health monitoring and fault reporting
  • Supports two isolated digital inputs which can be configured to change audio routes or initiate recorded announcements.
  • Supports ambient noise compensation (ANC)
  • Supports extensive DSP capabilities on each channel, including per channel gain, delay, power limiting, dynamic range compression and parametric equalisation.
  • Supports pre-recorded Digital Voice Announcement (DVA) functions with flash storage for over 90 minutes of recorded announcements and 3000 individual announcement segments stored in the voice dictionary.
  • Supports internal clock for scheduling announcements. Synchronisation of clock using NTP.
  • Supports in-built attention, test and alarm tones
  • Supports network configuration and monitoring via a standard web browser, or the NetSpire suite of administration, monitoring and control software.
Product Photos