Technical Specifications 

TCP Acceleration Features

Benefits

TCP Spoofing Eliminates effects of satellite delay on TCPs slow start and window sizing
ACK Reduction Reduces unnecessary acknowledgements to improve bandwidth efficiency
Flow Control Employs network feedback to intelligently control traffic flow
Error Recovery Works in tandem with Flow Control to recover damaged or lost packets
Traffic Prioritization Classifies traffic by IP address and port and prioritizes accordingly
Connection Establishment Spoofing Intelligently spoofs the TCP three-way handshake to speed up establishment of a connection
HTTP Acceleration Features Benefits
Browser Cache Leveraging Only prefetches data not residing in browser cache, improving efficiency
Bulk Transfer Prioritization Prioritizes bulk transfers to prevent adverse effect on other Web traffic
Cookie Handling Ensures accurate painting of Web pages with the proper cookies
SSL Acceleration Prefetches secure Web page content
Compression Feature Benefits
Payload Compression  
  • Stateful Compression
Provides significantly higher compression than standard stateless algorithms, enabling increased transmission speeds
  • Content-Sensitive Compression
Intelligently determines and compresses compressible data only
  • YK Compression
State-of-the-art compression algorithm providing significantly higher compression than the standard V.44 compression
Header Compression Leverages the IPoS standard for inroute header compression for TCP, UDP, and RTP protocols, resulting in additional bandwidth savings

HN embedded acceleration and compression technologies have a dramatic impact on performance as shown below. Relative performance of Web and FTP traffic is shown with and without acceleration over satellite. Also shown below is the progressive improvement in Web acceleration by layering multiple HN performance-enhancing technologies.

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