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Performance Enhancement Proxies - Notice: Comtech EF Data reserves the right to change specifications of products described in these documents at any time without notice and without obligation to notify any person of such changes. Information in these documents may differ from information published in other Comtech EF Data documents.

turboVR™ Router with Acceleration

turboIP® Performance Enhancement Proxy
Up to 2.048 Mbps data rate Up to 15 Mbps data rate

Router with Network Address Translation (NAT)

easyConnect - transparent bridge
Dynamic Host Configuration Protocol (DHCP) Data & TCP Header Compression
Data & TCP Header Compression Serial, Web & SNMP management interfaces
Serial & Web management interfaces 1U rack mountable platform
Network appliance-style platform Targeted primarily at military/government sector
Targeted at commercial market  
With convergence of voice, data and video over satellite, some organizations are encountering TCP/IP performance limitations. Typical satellite links exhibit high latency and bit error rates (impaired links), which can be challenging for the transmission of TCP. With this connection-oriented protocol, a number of factors contribute to its performance degradation over impaired links, including:
  • The time required for an acknowledgement can severely limit the ramp up in transmission rate
  • Sender’s small window size reduces throughput
  • Delay that is interpreted as network congestion versus propagation causes reduced transmission rates
  • Packet loss that is interpreted as network congestion versus corruption causes reduced transmission rates

Comtech EF Data’s performance enhancement proxies, turboVR and turboIP were designed to combat the inherent challenges of transmitting TCP over satellite links. Both products provide transparent acceleration of TCP sessions, increasing throughput over satellite links while requiring minimal topology changes.. And, being standards-based, supporting the Space Communications Protocol Standard (SCPS) Transport Protocol (SCPS-TP), turboVR and turboIP can provide reliable connection-oriented, end-to-end data transfer for user applications.

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