2-Channel Full-duplex Digital Beltpack


  • 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 PoE*
  • Powerline via XLR cable to HMS-4X**


  • 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 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 to HMS-4X**
  • Central firmware upgrades from host

*CCM and Endpoint network connection to HMS-4X requires HLI-ET2
** XLR Powerline is not available for Arcadia. Contact Clear-Com for further information.

Item Part Number:


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


The HelixNet HXII-BP beltpack is a two-channel intercom user station hosted by Arcadia® Central Station or HelixNet HMS-4X main station.

Note: Access the HelixNet Cabling Calculator to calculate estimated maximum cable length for a single Clear-Com HelixNet digital partyline connection.

The HelixNet IP networking guide provides specifications, best practices and guidance for the integration of HelixNet into an existing or new IP network.

Technical Specifications

HelixNet System Hosts

Arcadia: Supports up to 64 HelixNet endpoints (HRM-4X, HKB-2X & HXII-BP) over Ethernet. Up to 24 Channels can be HelixNet Enabled using a Licensed Port for assignment to any HelixNet endpoints keyset.
HMS-4X: Supports up to 64 endpoints (HRM-4X, HKB-2X, HBP-2X, HXII-BP, HLI-2W2, HLI-4W2, LQ port). User stations can connect via the 2 Powerlines (note power and data limits) or over Ethernet via optional HLI-ET2 module. HMS allows use of 12 channels which can be expanded to 24 using optional license.


XLR Powerline**: 3-pin XLR-F
LAN/PoE: 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 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 4.2+)
Network Protocols

Ethernet IPv4–Unicast Audio and Control
mDNS–Multicast Device Discovery
Layer 3 routable with mDNS function limitations
RTP–Audio Transport
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

Endpoint Resource Use: 1 (-X4 variant)
Endpoint Resource Use: 2 (-X5 for binaural)
300 (max) kbps from each HXII-BP to HMS
1200 (max) kbps from HMS to each endpoint
Network Jitter Tolerance: <= 128ms jitter buffer per audio stream receiver automatically adjusted to network performance
QoS Tags: DSCP=41, Assured Forwarding (AF)
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.
*Ethernet to HMS-4X requires HLI-ET2
**Not available for Arcadia. Contact Clear-Com

Associated Products

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