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 HMS’s 2 Powerlines (see datasheet for limits) or over Ethernet via optional HLI-ET2 module. HMS allows use of 12 channels which can be expanded to 24 using optional license.

Connectors

Powerline**: Powerline, Terminal Block 5 pole, 5mm pitch
Ethernet/PoE *: RJ45
Headset: 4-pin XLR–M or 7-pin XLR-M with (2) PTT GPI (-X7)
Gooseneck Mic: 3-pin Tuchel
Power Connector: Terminal Block 2 Pole, 5mm

Microphone Pre-amplifier

Headset Mic Impedance: 200Ω (Dynamic)
Headset Mic Voltage: 1.7V (Electret selectable)
Limiter: +23dB
Route to four-wire output at 0dBu out:
Mic Gain: 60dB (Dynamic), 45dB (Electret)
Frequency Response: 300Hz – 10 kHz ± 3dB, contoured for intelligibility
Distortion: <0.1% THD @ 1kHz
Noise: <-65dBu
Headphone Limiter: 0dB (selectable)

Headphone Amplifier

Load Impedance: >32Ω
Output Level: +12dBu before clipping
Sidetone: -12dB (selectable)
Route from a four-wire input at 0dBu in:
Max Gain: 0dB
Frequency Response: 40Hz – 10kHz ±3dB
Distortion: <0.1% THD @ 1kHz
Noise: -65dBu
Headphone Limiter: 0dB (selectable)

Loudspeaker Amplifier

Load Impedance: 8Ω
Output Level: +18dBu before clipping
Route from a 4-wire input at 0dBu in:
Max Gain: 18dB
Frequency Response: 200Hz – 10kHz ±3dB
Distortion: <0.1% THD @ 1kHz
Noise: <-50dBu

Logic Inputs – PTT/GPI (-X7 only)

Assignable to talk, call, mic and headset keys
Input: 2
Style: Powered input, close contact to ground
Detection Voltage (Min): 3V
Input Voltage (Max): 5V
Output Voltage: 5V
Output Current (Max): 1mA

Device Power

Voltage: 48V DC
Current (Max): 0.3A
Power (Max): 14.4W
BTU (Max): 49BTU/hr
Input Power Connector: Terminal Block 2 Pole, 5mm

This unit can be powered via:

AC Adapter – Wall (not included)

Input Voltage Range: 100 – 240V AC
Input Frequency Range: 50 – 60Hz
Input Power Connector: Universal
Output Voltage: 48V DC
Output Power (Max): 15W
Output Power Connector: KPPX-3-P

PoE – Power over Ethernet

IEEE 802.3af-2003 – Class 0
PSE: 15.4W DC max @ Power Source Req.
PD: 12.95W DC max @ Powered Device Draw

Powerline**:
Input Voltage: ±29.5V DC
Input Current (Speaker Off): 0.3A
Input Current (Max): 0.5A
Powerline Utilization:
HKB (Local Power) = 1 beltpack
HKB (Speaker Off) = 2 beltpacks
HKB (Speaker On) = 3 beltpacks
Note the maximum Powerline capacity of the HMS-4X.

Use HelixNet Cable Calculator to validate load and cable distance.

Environmental

32º – +113ºF (0 – +45ºC)
90% relative humidity

Dimensions

4-Gang NEMA, 4.5 x 8.2 x 2.4in (HxWxD)
(114 x 209 x 61mm)

Weight

18.8oz (0.53kg)

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
HTTP-Management
RTP-Audio Transport
WavPack – Audio Codec

Network Ports

Unicast:
Port 80 TCP – System Management
Port 6001 TCP – System Management
Port 6001 UDP – Audio Streams

Multicast:
Port 5353 UDP – mDNS, Names, Discovery, Linking
Optional for device names and linking

Network Parameters

HMS-4X Endpoint Resource Use: 1
Bandwidth:
300 (max) kbps from each HKB to HMS
1200 (max) kbps from HMS to HKB
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: 169.254.0.0/16
System reserved IP range: 10.0.0.0/8 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