[AusNOG] NBN Satellite Latency

Geoff Huston gih at apnic.net
Fri Feb 3 17:08:05 EST 2017


> On 3 Feb 2017, at 4:39 pm, Paul Wilkins <paulwilkins369 at gmail.com> wrote:
> 
> Which is 460ms, almost double what you pay Einstein (240ms). Wonder where it all goes? They would have to be using TDM, because only a time slot delay is going to make that sort of difference. 700ms is pretty awful.
> 


Much depends on where the earth station is vs where the spacecraft is

We commonly saw 680ms doing a round trip ping between earth stations in Sydney and Vancouver using an Intelsat spacecraft. So the relevant questions are about the geo slot used by the spacecraft and the exact location of the earth stations.

Geoff








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