XipLink Real-Time - "XRT"

XipLink Real Time (“XRT”) is a new optimization capability which compresses, coalesces and prioritizes VOIP and UDP for significantly more bandwidth and packet efficiency.  It provides key benefits including a dramatic bandwidth reduction, a dramatic reduction in the packets per second over a network, and ensures that real time traffic is properly prioritized for optimum quality.

Bandwidth Reduction and Increased Scalability for VOIP

  • Immediate Bandwidth and Packet Per Second Savings!

  • Improve overall quality of voice and streaming over satellite

The XRT solution takes advantage of the fact that:

  • Most VOIP is headers – approximately 40%!
  • Most header fields do not change from packet to packet
  • Multiple streams (calls) each have their own overhead and many common headers
  • Inefficiencies apply to all UDP, but are most pronounced in small packet applications (e.g. not full frame video streaming).
  • These real-time streams need to be prioritized but managed through the network
  • Effective voice codecs are well established and provide excellent options to tune quality versus size. Little need to touch the data stream.

Example Compression Benefits

  • By VOIP Call Volume
  • By VOIP Codec
Codec & Bit Rate (Kbps)  Capture Window (ms) # of Calls Bandwidth Savings % PPS Benefit Ratio
G.729 (8 Kbps) 20 1 8% 1
G.729 (8 Kbps) 20 2 33% 2
G.729 (8 Kbps) 20 5 47% 5
G.729 (8 Kbps) 20 10 52% 10
G.729 (8 Kbps) 20 20 54% 20
G.729 (8 Kbps) 20 50 56% 50
G.729 (8 Kbps) 20 100 57% 70
G.729 (8 Kbps) 20 200 57% 70
Codec & Bit Rate (Kbps)  Capture Window (ms) # of Calls Bandwidth Savings % PPS Benefit Ratio
G.729 (8 Kbps) 20 10 52% 10
G.711 (64 Kbps)  20 10 17% 9
G.723.1 (6.3 Kbps)  20 10 46% 7
G.723.1 (5.3 Kbps)  20 10 49% 7
G.726 (32 Kbps)  20 10 26% 10
G.726 (24 Kbps)  20 10 31% 10
G.728 (16 Kbps)  20 10 30% 7
Skype (variable) 20 10 28% 7