XipLink Real Time Technology

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