What is VSAT?
VSAT is an abbreviation for a Very Small Aperture Terminal. It is basically a two-way satellite ground station with a less than 3 meters tall (most of them are about 0.75 m to 1.2 m tall) dish antenna stationed. The transmission rates of VSATs are usually from very low and up to 4 Mbit/s. These VSATs' primary job is accessing the satellites in the geosynchronous orbit and relaying data from terminals in earth to other terminals and hubs. They will often transmit narrowband data, such as the transactions of credit cards, polling, RFID (Radio Frequency Identification) data, and SCADA (Supervisory Control and Data Acquisition), or broadband data, such as satellite Internet, VoIP, and videos. However, the VSAT technology is also used for various types of communications.
Advantages
- Availability: VSAT services can be deployed anywhere having a clear view of the Clarke Belt
- Diversity: VSAT provides a wireless link completely independent of the local terrestrial/wireline infrastructure - especially important for backup or disaster recovery services
- Deployability: VSAT services can be deployed in hours or even minutes (with auto-acquisition antennas)
- Homogeneity: VSAT enables customers to get the same speeds and service level agreements at all locations across their entire network regardless of location
- Acceleration: Most modern VSAT systems use onboard acceleration of protocols such as TCP ("spoofing" of acknowledgement packets) and HTTP (pre-fetching of recognized HTTP objects); this delivers high-quality Internet performance regardless of latency.
- Multicast: Most current VSAT systems use a broadcast download scheme (such as DVB-S) which enables them to deliver the same content to tens or thousands of locations simultaneously at no additional cost
- Security: Corporate-grade VSAT networks are private layer-2 networks over the air.
VSAT
HUGHES invented the VSAT (very small aperture terminal) in 1985 and soon thereafter launched the satellite networks industry with the first system sale to Wal-Mart. Since that time it has continually invested in design and development of innovative satellite networking products and services, consistently maintaining its global market share leadership. To Hughes ships satellite terminals to enterprise, government and consumer/small business customers in over 100 countries. HughesNet™ encompasses all broadband solutions and services from Hughes, which are marketed directly by Hughes and its authorized resellers and distributors throughout North America, Europe, India and Brazil.Hughes broadband satellite networks and terminals are based on the IPoS (IP over Satellite) global standard, approved by the TIA, ETSI, and ITU standards organizations.Hughes satellite systems are the most advanced and widely deployed around the world.
Hughes systems enable service operators and enterprises to provision a variety of services including: Why the Hughes systems are right for your network: Scalable, high-performance broadband satellite modem for enterprises The HN7000S, part of HUGHES®’ HN7000S family, is a high-performance broadband satellite modem designed to provide high-speed access for the consumer, small office/home office, and enterprise markets. Designed to provide both versatility and performance, the HN7000S provides unsurpassed performance for even the most bandwidth-intensive applications. The HN7000S receives and transmits data over the satellite via the Hughes HN Network Operations Center (NOC). TCP connections can be initiated to or from hosts at remote locations. Security is assured through DES encryption and integrated conditional access. In addition, all user intranet communications can be isolated from other enterprise intranets and from remote terminals accessing the "public" Internet operating in the same network. The HN7000S broadband satellite modem passes IP data packets to and from any IP device on the LAN and has much of the functionality of an IP modem. The HN7000S incorporates Hughes’ advanced Performance Enhancing Proxy (PEP) feature, which increases throughput performance and maximizes the user’s experience and satisfaction. The HN7000S also supports Hughes’ TurboPage® feature, providing HTTP acceleration for lightning-fast browser performance. The HN7000S supports advanced Quality of Service features to ensure that customers get the priority and bandwidth they require.HN7000S Satellite Modem
DVB-S2 ACM
Supporting Adaptive Coding and Modulation (ACM) on the outbound channel means that operators can gain significant bandwidth efficiencies and provide high availability services as well.
The HN7000S operates with all Hughes HN systems and uses the industry standards DVB-S or DVB-S2. As a result, the HN7000S can be easily configured to support a wide range of downstream data rates by selecting different modulation, symbol, and FEC coding rates. The downstream is scalable up to 121 Mbps and the upstream return channel is scalable up to 1.6 Mbps. The HN7000S provides an integrated broadband LAN solution to Windows®, UNIX®, Apple® Macintosh®, and other platforms running IP over Ethernet. The HN7000S coexists with prior generations of DW terminals, thereby ensuring protection of service operators’ investments.
Features
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