I am looking for an accurate interpretation of the results of this speed test and the TestMyVoIP.com test. What's good, bad, acceptable. Also, when a particular value is determined to be problematic where can it be found as to the cause and recommended solution.
I was not able to find this information anywhere to date. It would seem to me that it would be a "sticky" for newbies like me and to avoid having someone ask the same question over and over.
Thanks
Joe P
Download 691,145 to 3,017,424 bps Upload 370.467 to 475,168 bps QOS 18 to 91% RTT 56 to 60 ms MaxPause 71 to 190 ms
Note: As you can see my test results are all over the board and I am trying to accurately evaluate and understand them.
I'm looking forward to an answer to your question. Other than the fact I can have 3 to 4 high quality Voip lines, I don't know what the information is telling me. I did notice that my test results were varied as well. I experimented with closing certain applications e.g. Spy Sweeper and Anti-Virus programs and then testing. My results were quite different without the applications on vs with the applications on.
Voicechick
Trowski Vonage Forum MVM
Joined: May 16, 2005 Posts: 1389
Location: Putnam, CT
The Qos is really the stabilty or variation if your connecting. On the test my DL may start at 3.2 megs then go up to 5.8...the UL stays constant in the 900's. So that will bring your QOS down...but doesn't really affect your service.
Realistically the best indicator for you service IMHO is the www.testyourvoip.com with a test score to Boston. Then look at the detailed results.
Realistically the best indicator for you service IMHO is the www.testyourvoip.com with a test score to Boston. Then look at the detailed results.
I couldn't agree more! Still, the detailed results are meaningless without knowing what the results mean and how they apply to each individuals service. Hopefully, a Voip guru will come along with a plain english explanation and it can be made into a permanent part of this forum. I would think that would be greatly beneficial considering that almost 36,000 people have viewed this thread!!
Joe P
Trowski Vonage Forum MVM
Joined: May 16, 2005 Posts: 1389
Location: Putnam, CT
The testyourvoip scores can easily be translated. Posting the 4.4 out of 5 or 3.8 out of 5 is no good..they should have the DETAILED call results that look like this...
Test Details The information below explains why your call quality score (MOS) was less than perfect.
Find the results that you want more quickly... Jump to: Media Quality Signaling Quality
MOS Analysis from You TO Boston
Media Quality MOS 4.1 / 5.0 (Best with G.711 is 4.4)
Codec G.711 (PCM at 64kbps, 20ms RTP payload, 80kbps IP BW) Round-Trip Latency 177 ms Packet Discards 1.5% Packet Loss 0.0% Loss Periods Min: 20 ms Avg: 20 ms Max: 60 ms Random Loss
Jitter Min: 0 ms Avg: 6 ms Max: 47 ms
Signaling Quality Post-Dial Delay 109 ms Call Setup Time 125 ms Media Delay 281 ms MOS Analysis FROM Boston To You
Media Quality MOS 4.3 / 5.0 (Best with G.711 is 4.4)
Codec G.711 (PCM at 64kbps, 20ms RTP payload, 80kbps IP BW) Round-Trip Latency 177 ms Packet Discards 0.4% Packet Loss 0.0% Loss Periods Min: 20 ms Avg: 20 ms Max: 40 ms Random Loss
Jitter Min: 4 ms Avg: 6 ms Max: 42 ms
Signaling Quality Post-Pickup Delay 139 ms Call Setup Time 144 ms Media Delay 171 ms
Thanks but, posting the "Detailed" results still does not offer an explanation of the the individual results, which I am looking for and I believe others on this forum would want and benefit by knowing. Take for example "RTT", "Packet Discards" or "Jittter". What is needed is an explanation of that value and the high, low and acceptable value, and how it affects the quality of service.
Joe P
Trowski Vonage Forum MVM
Joined: May 16, 2005 Posts: 1389
Location: Putnam, CT
There are some explanantions on testyourvoip.com, but they don't help everyone. Thisis from Brix, the companies that make the test.
Signaling Quality measures call signaling and setup performance, which represents a person's initial exposure to a Voip service. When users pick up the phone to make a call, they expect that call to be quickly and reliably established on the first attempt. Brix signaling quality tests measure the performance of the entire signaling infrastructure by initiating and monitoring calls over today's Voip protocols (e.g., SIP, MGCP, PRI, NCS, etc.), and provide detailed measurements for each call setup step. Signaling quality metrics, such as post-dial delay and registration delay, assist in troubleshooting call setup infrastructure.
Delivery Quality measures transport performance. Problems such as long latencies, lost packets, and signal strength all contribute to overall call satisfaction. Individually, delivery quality metrics are vital in diagnosing the cause and location of call performance problems across IP and TDM delivery networks and media gateways.
Call Quality measures a user's overall call experiences. Call quality metrics such as the Mean Opinion Score (MOS), reported on a scale of one (bad) to five (excellent), enable both technical personnel and end users to easily assess call quality on a call-by-call basis. The Brix Voip Test Suites support the E-Model (ITU G.107), PESQ (ITU P.862), and other emerging call quality industry standards.
Also, here is a link to a post on dslreports.com and there is an attchement on there that explains what they mean also.
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