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Mercury ES

Mercury Interface Unit (MIU)

A Mercury intercom system is built on one or more Mercury Interface Units, PCI Cards or USB devices connected over a standard IP network. These devices, known as Mercury hosts, have varying capacities to suit your specific operational requirements. The Mercury Interface Unit (MIU) offers the highest capacity of the Trilogy range of Mercury hosts, acting as a versatile audio processing unit and IP gateway which allows a wide range of external devices to be connected to the intercom network.

The MIU is a 2RU rack-mountable multi-purpose device that provides multi-channel interfacing with radios, conventionaly and VoIP (SIP) telephony, balanced and unbalanced audio interfacing, and other capabilities over terrestral and/or satellite IP networks. The MIU can also operate as a standalone system for up to 32 users in close proximity (up to 1500 ft from the central unit) or as part of a peer-to-peer distributed network of other Mercury devices supporting virtually an unlimited number of users.

The MIU can be equipped with any combination of up to four optional expansion boards, each with 4 or 8 ports (dependent on type) giving a maximum capacity of 32 ports in a single unit.

Optional Expansion Boards include:

  • Audio Expansion Board (AEB)
  • Radio Interface Board (RIB)
  • Telephone Expansion Boards (FXO/FXS)
  • Mercury Voice Bridge Board (cross-domain capable)


Key Features:

  • 2RU Interface Unit for multi-channel interfacing
  • Up to 32 physical ports for hardware panels, telephony (FXO/FXS), radio interoperability (RIB), Cross Domain Solutions (CDS), and analog audio communications (AEB)
  • Up to 64 simultaneous IP audio channels
  • Supports low-latency, HD audio and signaling with other Mercury peers
  • Hosts up to 64 Trilogy Virtual Panels (iOS, Android, or Windows)
  • Facilitates interfacing with up to 64 SIP-enabled endpoints supporting both point-to-point and PBX-based connectivity
  • Enables RoIP (Radio-over-IP) over any IP network
  • Compatible with conventional telephone equipment (POTS)
  • Ideal for extending all types of voice communications over IP networks
  • Capable of multicasting encoded audio over IP network using a variety of supported codecs


To view Brochures and Datasheets, visit the Product Datasheet page.
To view Manuals, visit the User Guide page.

Technical Specifications

Expansion Slots: 4


Expansion Slot Options

Audio Expansion Boards (AEB): 8 ports each

Telephone Expansion Boards (FXO, FXS): 4 ports each

Radio Interface Board (RIB): 8 ports each

Mercury Voice Bridge (MVB): 8 ports each


Zero Form-Factor Options

Redundant Power Supply


Digital Audio

Frequency response: up to 25Hz to 7kHz (16kHz sampling)

Distortion: <0.05% when routed locally

Noise: < -60dB un-weighted

Common mode rejection ratio: >70dB

Absolute maximum input voltage: Common Mode ±15V / Differential ±28V I/O

Front: (1) USB 2.0

Rear: (1) USB 2.0, GPI - 16 via DB-25M, GPO - 16 via DB-25F

PS2 Ports: 2 (keyboard and mouse)

SVGA Port: 1 rear (for monitor)

100Mbps Ethernet - Normal Mode: 2 RJ45 - combined voice and data traffic via internal switch

100Mbps Ethernet - Special Mode: 2 RJ45 - independent ports for voice and data traffic

Auxiliary Audio - Front:

Mic level in via 3.5mm jack (-46dB)

Headphone level out via 3.5mm jack (8.24dBu)

Auxiliary Audio - Rear:

Line level in (8.24dBu)

Line level out (2.22dBu)



Nominal, 100-240V 160W 50-60Hz Internally Fused

IEC mains connector with retainer



Operating Temperature: 32° to 122°F (0° to 50°C)

Operating Humidity: 20 to 85%, non-condensing, relative humidity

Shock: 15g/11ms half sine over 3 axes

Vibration: +/- 1.5g peak acceleration or +/- 4.5mm peak displacement, swept over the frequency range 5 to 1000Hz



19 x 3.5 x 14.5in (WxHxD)

(483 x 89 x 370mm)




12.6lbs (5.7kg)


Regulatory Compliance

Emissions: EN 55032:2015 & FCC/ CFR47:Part15 Class A EN61000-3-2:2014 & EN 61000-3-3:2013

Immunity: EN 55035:2017

Safety: CAN/CSA C22.2 No. 60950-1-07 + Am1:2011 + Am2:2014 ANSI/UL 60950-1- 2014