Hughes HX System

High-quality satellite broadband system. Designed and optimized for carrier-grade IP broadband networking and specialized applications such as mobility and mesh networking.

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Designed and optimized for carrier-grade IP broadband networking and specialized applications such as mobility and mesh networking, Hughes brings to the market the HX System—a broadband satellite system with an economical gateway earth station and high-performance remote terminals.

HX System Architecture
The core component of the HX System is the HX Gateway, which acts as the system master and includes the network management and dynamic bandwidth assignment manager. The HX Gateway uses a DVB-S2 carrier with Adaptive Coding and Modulation (ACM) for the outbound channel received by all HX System remote terminals. HX remote terminals utilize FDMA/TDMA channels to communicate back to the HX Gateway (star mode) or to each other (mesh mode).

The FDMA/TDMA channels of the HX System are highly efficient and are based on the industry-leading standard, Internet Protocol over Satellite (IPoS), which has been endorsed by ETSI, ITU, and TIA. The HX System FDMA/TDMA channels of the HX System support data rates up to 3.2 Mbps.

Efficiency and flexibility in utilizing satellite bandwidth are core to the design of the HX System. Each link, in star or mesh mode, can be configured to provide a QoS tailored for an individual remote terminal. And each remote link can be independently configured with unique Commited Information Rates (CIRs), thereby allowing a service provider to develop a service tailored to their customers’ specific requirements. In addition, the HX System bandwidth allocation scheme is designed so that idle terminals can be configured to release all bandwidth assignments thus ensuring optimal bandwidth utilization.

HX Gateway Features

  • Compact hub configuration
  • Intelligent, protocol-sensitive bandwidth assignment for optimum performance and efficiency for each application
  • Dynamically assigned CIRs per remote or group of remote terminals
  • High-performance IP feature set
  • End-to-end network security
  • Advanced network management capabilities including detailed remote diagnostics
  • Active redundancy for all critical components
  • Optional mesh controller for supporting single hop remote-to-remote connectivity



  • Quality of Service features include:
  • On-demand Constant Bit Rate (CBR) services
  • Adaptive CBR with Minimum, Maximum, and user- definable step-sizes
  • CIR with Minimum, Guaranteed, and Maximum rates
  • Backlog-based dynamic stream with weighted fair queuing
  • Class-based weighted prioritization
  • Multicast data delivery
  • Four levels of IP traffic prioritization
  • Bandwidth allocation
  • Supports both preassigned (static) traffic assignment and dynamic traffic assignment
  • Idle remotes can be configured to release all network resources
  • Bandwidth optimization
  • Integrated TCP spoofing
  • Integrated HTTP acceleration (optional)
  • Integrated TCP and UDP compression
  • Header compression
  • Outbound Adaptive Coding and Modulation
  • Inbound Adaptive Inroute Selection
  • IP routing capability:
  • Static and dynamic addressing
  • DHCP server or relay
  • DNS caching
  • RIPV1, RIPV2, BGP routing support
  • Multicasts to and from the LAN by using IGMP
  • VRRP
  • VLAN tagging (end-to-end)
  • Firewall support through integrated access control lists
  • Bidirectional data encryption (optional)
  • Configuration, status monitoring, and commissioning
  • Remote terminal management via the Hughes Unified Element Manager and SNMP agent
  • Mobility features (optional)
  • FDMA/TDMA channel spreading
  • NEMA interface
  • Roaming support
  • Doppler compensation
  • Fast reacquisition of outbound
  • Persistent IP connection
  • Mesh features (optional)
  • Simultaneous star/mesh
  • Multichannel mesh receiver at remote
  • Mesh TCP and UDP connections
  • Mesh Gateway


The IPoS Advantage
The Hughes family of satellite terminals and routers is compliant with the global IPoS standard, the only standard approved by the TIA, ETSI, and ITU standards organizations. IPoS enables Hughes broadband routers/terminals to provide superior FDMA/TDMA performance and efficiency.

  • Clearly defined interface conforming to the ETSI SI-SAP standard enables back-end systems to work easily with the Hughes infrastructure
  • Truly dynamic bandwidth assignment; remote sites with no traffic are assigned no resources
  • Finer granularity allows a lower average burst overhead, thereby increasing efficiency

The HX System from Hughes, the world leader in broadband satellite networks and services, is designed and optimized for smaller and mobile networks, including maritime and airborne applications, where the provision of high-quality and high-bandwidth links is paramount. Capable of simultaneous mesh, star, and multi-star configurations, the HX System builds upon the capabilities and global success of the high-performance HN System, incorporating many advanced features pioneered by Hughes, including integrated TCP acceleration and advanced IP networking. Its broadband satellite products are based on global standards approved by TIA, ETSI, and ITU, including IPoS/DVB-S2, RSM-A, and GMR-1. To date, Hughes has shipped more than 1.9 million satellite terminals to customers in over 100 countries.