said by MNLM :Although I did not post complaints to your forum, I exchanged approximately 70 emails with tech people at Comcast re: the effect of its throttling system on QoS in Jersey City, disrupting voip. Even when download / upload speeds were fine, QoS would frequently fall between 30%-75%. (I used the »
www.voipreview.org/voipspeedtester.aspx test.). The voip problem began shortly after Comcast implemented throttling -- although I was never throttled, results indicate that throttling software monitoring affects QoS.
Even when I provided detailed test results to Comcast, including run tests that their technicians specified, their official response was always, "We do not recognize third-party tests" and "Our technicians say there is nothing wrong." They charged me for two site visits, during which the tech guys saw the results for themselves.
Using the same test on my office 1.5mbps DSL (Verizon) usually gave results in the 90%-99% range.
Because Comcast continued to deny a problem existed in Jersey City, I submitted copies of my correspondence and test results to the FCC, which demanded that Comcast explain why it was degrading competing voip services but not its own.
When Fios became available, I cancelled Comcast. We now get scores in the 95-99% range.
Wish Verizon would become available here rather than their half-assed build outs.