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The HXII-BP beltpack is a two-channel intercom user station.



  • Easy to use front panel with OLED display & backlit keys
  • 2 Keysets assignable to channels
  • Stacked keys allow unique combination of channels
  • Independent Program Audio control
  • USB call signal flasher
  • Binaural controls on HXII-BP-X5


  • Ethernet Network port with PoE1
  • Powerline via XLR cable


  • Multiple mounting options
  • Rugged, lightweight polycarbonate enclosure
  • IP53 environmental rating

The HelixNet System 

  • Wired Partyline - Networked
  • Hosted by Arcadia or HMS-4X
  • Up to 24 Channels – Licensed
  • Up to 64 -128 HelixNet Endpoints
  • Program Audio user level control

Effortless Management 

  • Easy to use CCM browser configuration
  • Fast front panel control & configuration
  • Central discovery & pairing on Arcadia
  • Plug-and-go powerline
  • Central firmware upgrades from host

Item Code



For Powerline daisy-chaining, the following must be ordered:

SP-2 (for daisy chaining)

SP-3 (for splitting)


HelixNet System Hosts

Arcadia: Supports up to 128 HelixNet User Stations over Ethernet or Powerline via the HXII-DPL powerline device. Up to 24 channels can be HelixNet enabled using a Licensed Port for assignment to any HelixNet User Station keyset.

HMS-4X2: Supports up to 64 endpoints (Remote Stations, Speaker Stations, Beltpacks, HLI-2W2, HLI-4W2, LQ port). User stations can connect directly to the 2 HMS-4X Powerlines or via optional HLI-ET2 module using HXII-DPL Powerline Device or 3rd party network switch connection. HMS-4X allows use of 12 channels which can be expanded to 24 using optional license.


XLR Powerline: 3-pin XLR-F

LAN/PoE1: RJ45 etherCON

Headset: 4-pin XLR-M (-X4) or 5-pin XLR-F (-X5)

USB: Micro AB

Microphone Pre-Amplifier

Headset Mic Impedance: 200Ω (Dynamic)

Headset Mic Voltage: 1.7V (Electret selectable)

Limiter: +23dB

Route to 4-wire output at 0dBu out:

Mic Gain: 60dB (Dynamic), 45dB (Electret)

Frequency Response: 300Hz – 10 kHz ± 3dB, contoured for intelligibility

Distortion: <0.2% THD @ 1kHz

Noise: <-55dBu (Dynamic), <-65dBu (Electret)

Headphone Amplifier

Load Impedance: >32Ω 

Output Level: +12dBu before clipping

Sidetone: -12dB (selectable)

Route from a 4-wire input at 0dBu in:

Max Gain: 0dB

Frequency Response: 40Hz - 10kHz ±3dB

Distortion: <0.2% THD @ 1kHz

Noise: -65dBu

Headphone Limiter: 0dB (selectable)

Device Power

Voltage: 48V DC

Current (Max): 0.09A

Power (Max): 4W

BTU (Max): 13BTU/hr

This unit can be powered via:

PoE - Power over Ethernet: IEEE 802.3af-2003 - Class 1

PSE: 4.0W DC max @ Power Source Req.

PD: 3.84W DC max @ Powered Device Draw


Input Voltage: ±29.5V DC

Input Current (Max): 0.13A

Powerline Utilization:

HXII-BP = 1 beltpack

Note the maximum Powerline capacity of the HXII-DPL & HMS-4X

Use HelixNet Cable Calculator to validate load and cable distance.


32° to +104°F (0° to +40°C)

0 - 90% relative humidity

IP53 rated


3.9 x 5.3 x 1.7in (WxHxD)

99 x 135 x 43mm (WxHxD)


12.2oz (0.35kg)

Network Specifications (Firmware Version 4.5+)
Network Protocols

Ethernet IPv4–Unicast Audio and Control

mDNS–Multicast Device Discovery

Layer 3 routable with mDNS function limitations


I.V. Core–Decentralized Network Routing & Mixing

IVP–Proprietary intercom Audio and Control

WavPack–Audio Codec

Network Ports


Port 80 TCP–System Management

Port 6001 TCP–System Management

Port 6001 UDP–Audio Streams


Port 5353 UDP–mDNS, Names, Discovery, Linking

Optional for device names and linking

Network Parameters

HMS-4X Endpoint Resource Use: 1 (-X4)

HMS-4X Endpoint Resource Use: 2 (-X5)


300 (max) kbps from each beltpack to Arcadia/HMS-4X

1200 (max) kbps from Arcadia/HMS-4X to each endpoint

Network Jitter Tolerance: <= 128ms jitter buffer per audio stream receiver automatically adjusted to network performance

QoS Tags: DSCP=34, Assured Forwarding (AF=41)

Link-Local Default IP Address Range:

System Reserved IP Range: for endpoints

Recommended Ethernet Switches

• Managed Ethernet Switch – Layer 3

• 100/1000 Base-T ports for endpoints

• 1000 Base IP Trunks between switches

• QoS configuration

• Energy Efficient Ethernet bypass option

• IGMP Snooping bypass option

Please refer to the Clear-Com HelixNet Network Guide for additional switch settings and network characteristics.

1Ethernet to legacy HMS-4X requires HLI-ET2

2HMS-4X is a legacy product

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