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Colubris Raises Bar for Wi-Fi Voice Performance


Colubris Smashes the 14 Phone Barrier

First to Achieve Toll-Quality on 16 Phones With Data on a Single Access Device in Independently Verified Tests

Waltham, MA and Portland, OR, 03/16/2005, Colubris Networks announced today that the Colubris Multiservice Wireless Local Area Network (WLAN) System smashed the 14 Voice over Wi-Fi (VoWi-Fi) phone barrier in independently-verified tests setting the benchmark for voice quality and capacity in a WLAN system. This means Enterprise IT managers using the Colubris Multiservice WLAN System can deploy VoWi-Fi services and applications on a broader scale than ever before.

“Colubris Networks utilized VeriWave’s VoIP over WLAN Test Suite to verify the proper handling of 16 VoWi-Fi calls with a single Colubris access device,” said Dr. Thomas Alexander, CTO, VeriWave. “The methodology used by Colubris is consistent with the industry accepted practice of measuring real-world voice quality, in the form of an R-value, in ideal conditions, as well as in the presence of other data traffic. The Colubris system achieved impressive performance, while handling 16 concurrent voice sessions.”

The Colubris Multiservice WLAN, using SpectraLink 802.11-capable H.323 handsets, supported 16 active, toll-quality voice sessions and data running across a single access device. The tests were independently verified by VeriWave and Farpoint Group. A Farpoint Technology Note about the test is available at

“Voice over IP over Wi-Fi (VoWi-Fi) is going to be a huge driver of the entire WLAN industry,” said Craig J. Mathias, a Principal with the wireless and mobile advisory firm Farpoint Group (Ashland, MA). “The Colubris and SpectraLink combination performed admirably even in the presence of data traffic on the same channel as voice.”

The Colubris Multiservice WLAN system provides 98% utilization of WLAN network capacity, which in tandem with Colubris’ leading Quality of Service (QoS) and application optimization capabilities, allows for delivery of the broadest possible range of applications and services to employees, suppliers, customers and partners. Benchmark voice capacity and performance is a key element of this capability.

Two of Colubris Networks’ industry-leading products -- the Colubris 320 Multiservice Access Device and Colubris 1250 Secure WLAN Gateway -- were tested. Test results show that the Colubris Multiservice WLAN System provides customers with industry-leading ability to scale for high-performance VoWi-Fi and best-in-class roaming capabilities.

About Colubris Networks

Colubris Networks is a global provider of intelligent wireless LAN access equipment and management systems for service providers and enterprises. The company’s award-winning products deliver seamless, secure access to broadband services and applications while integrating into existing network infrastructure, security and management systems. Colubris Networks’ equipment is deployed by more than 1,000 organizations worldwide. For more information, visit the company at, or


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