It's a catchy headline, but the testing methodology seems to say more about broadband Internet network congestion than the quality of actual VOIP calls.
To showcase its real-time VOIP and IPTV testing and monitoring products, Brix launched the TestYourVOIP.com in March 2004. Since then, users have generated nearly a million simulated SIP-based VOIP calls. To do so, they download a Java applet that acts as a SIP calling client. The client makes a "call" through Brix's SIP network, which Brix monitors to measure call quality.
According to the Brix press release:
Nearly 20 percent of Internet telephone test calls experienced unacceptable call quality over the last 18 months.
The number of test calls throughout this time that achieved a MOS of 3.6 or higher, also known as Acceptable Call Quality (ACQ), was only 81 percent.
"Over the last few years, the global market for consumer VoIP services has grown to nearly 20 million subscribers. These results from TestYourVoIP.com indicate that during this same period Internet call quality has declined," said Kaynam Hedayat, vice president, engineering, and chief technology officer at Brix.
Might another equally valid conclusion from this exercise be that Brix has trouble architecting and operating a reliable SIP-based VOIP network?
Seriously, what the test results may actually point to is increased broadband and Internet network congestion and its impact on latency-sensitive applications, like voice and video. And, how such applications suffer without the use of traffic prioritization schemes. Maybe Brix should change the name of its test Website to demonstratingthedrawbacksofsocallednetworkneutrality.com.
Or better yet, areasontobuymanagedcablevoipservice.com.
— Michael Harris, Chief Analyst, Cable Digital News