[PLUG] O.T.VoIP and Satellite

Keith Lofstrom keithl at gate.kl-ic.com
Tue Dec 30 00:04:08 UTC 2014


On Sun, Dec 28, 2014 at 11:05:21PM -0800, Chuck Hast wrote:
> Does anyone on the list have any experience with this sort of thing.
> I am going to see if I can get a hub on between the microcell and
> the rest of the network and try to sniff where it is talking to, then see
> if I
> do a traceroute to see what manner of delays I see on the link.

Typical internet is asymmetric - when somebody is watching a movie
on netflix or surfing the web, they are receiving a firehose of
bits and sending out a trickle of ACK packets.   

VOIP usage is symmetric, moderate bandwidth data streams in both
directions. 

Satellites are also asymmetric - they have a limited number of 
transponders with limited bandwidth, which they will allocate to
maximize overall customer retention, which means catering to the
majority.  Which isn't thee and me.

The satellite provider probably recently reallocated a customer
uplink transponder as a customer downlink transponder, to better
serve the netflix users.  There might be an FCC or ITU document
or ruling about this.  Do you know which particular satellite
you are talking to?  One of the ANIKs?

This may also affect other satellite-linked services;  long
haul trucking, remote gas stations and ATMs.  Look for other
disgruntled customers.

Keith
-- 
Keith Lofstrom          keithl at keithl.com



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