Hughes HX System User Manual

Chapter 1 • Overview
1037852-0001 Revision A
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generally eliminate the need for an external router at remote
sites. Router functions include flexible addressing with
support for routing information protocol (RIP), network
address and port translation (NAPT), port forwarding, DHCP
service and DHCP relay, DNS caching, and firewall
capability.
• PEP Data acceleration – All HX satellite routers implement
the Hughes PEP (performance enhancement proxy for TCP)
feature, which includes bidirectional TCP spoofing, data and
header compression, IP priority levels, ACK reduction, and
message multiplexing.
• Built-in network security – The HX System offers built-in
network security as a standard feature. All data transmissions
to satellite routers are encrypted to ensure that only
authorized modems access the transmission. Bidirectional
encryption is available as an option.
• Adaptive inroute selection (AIS) - A satellite router can
select an optimal symbol and coding rate for its inroute
transmission as a function of a configured trajectory table and
through information it learns about its transmission from a
closed loop power control algorithm. See the bulleted
description above for Robust rain fade mitigation
techniques.
• Cost-effective gateway – The HX gateway is optimized to
support small networks. It occupies a small physical space
and provides a very cost-effective solution for small
networks.
Broadband applications
HX Systems support the following services:
• Mobility - HX systems support the use of mobile satellite
routers through the use of the following primary enabling
technologies:
– Closed Loop Timing
– Spreading
– Doppler
• Broadband IP connectivity – The HX System offers a
completely private high-speed network with
performance-enhancing features that maximize performance
and network efficiency. The performance of individual
applications (interactive and file transfer) can be
independently managed with Hughes performance-enhancing
proxy parameters.
• GSM backhaul – The HX system can be configured as an IP
pipe and used as a global system for mobile communication

Hughes HX System Specifications

General

Brand	Hughes
Model	HX System
Category	Receiver
Language	English