Johnathan Corgan wrote:

First off, I have Sprint Broadband Direct internet service, a fixed wireless setup with a 2-5 Mbps downlink and a terrible 128 kbps uplink. So I know I'm in for trouble anyway.

The broadvoice edge router (63.251.209.126, their lax site) is another 11 hops away. One hop before that, the packet loss rate has gone up to 13%, so the Internet adds another 4% to my sucky ISP connection. Round trip time to this point is 200ms, so-so but livable.

Here's the kicker:

Reported packet loss from broadvoice, one additional hop, is a whopping 29%. So between the last "Internet" router (bbnet2.lax.pnap.net) and broadvoice's edge router, there is an additional 16% loss.

Just an update after about 12 hours of data--the data above was worst case.


During off-peak hours in the middle of the night the packet loss at my ISP was effectively zero, and only 3% along the way to broadvoice, with a 75ms round-trip time. Broadvoice edge-router still reports 28% packet loss though, and an additional 30ms RTT increase for this last hop. So I even more strongly suspect (or just really hope) they are preferentially discarding non-RTP traffic in favor of voice traffic.

I did discover that the multi-second outages are at my local ISP, not at Broadvoice--for some reason Sprint BBD can take up to 4 seconds to respond to a ping, so something is really wrong there--but is there a way to do this type of testing in a more rigorous and controlled fashion?

-Johnathan
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