[Asterisk-Users] Extending E1's over a Satellite link

[Arinze Izukanne]

Well Julio, in countries where there are no reliable
regional communication backbones with lower return
times, satellites are used and in most cases the
quality is outstanding for a good implementation even
for a double hop.

I could give you a call over a satellite link, G729
and  latency of up to 650ms.


Best regards

Arinze Izukanne


 --- Julio Arruda <jarruda-asterisk at jarruda.com>
wrote: 
> Tim McKee wrote:
> > Guys:
> >  
> > I routinely run multiple phones over our satellite
> system (I'm the VP of
> > Network Services at SDN Global, a satellite
> bandwidth provider located in
> > Charlotte NC, US).
> >  
> > Just last week I went to West Palm Beach, FL US
> and turned up a 10 phone
> > emergency call center, complete with ACD queues
> for an insurance company.
> > We were able to run all ten phones (Cisco 7960Gs,
> SIP) on G.729 codecs back
> > to my * server in Charlotte NC US.  No special
> settings were required on *
> > or the phones.
> >  
> > The satellite system *must* support *REAL* QoS and
> must have jitter <
> > ~100ms.  Traditional satellite systems have *lots*
> more jitter than that.
> > The actual latency _doesn't matter_ as long as the
> jitter is steady.  We are
> > even doing 'double-hop' phone calls successfully,
> where the latency is
> > double the normal latency.
> >  
> > Anyone that wants more detailed info contact me
> off-list.
> 
> Out of sheer curisity, the delay itself doesn't make
> the conversation 
> 'bad' (meaning, walkie-talkie/roger-and-over-like ?)
> The codec itself should introduce some dozens of ms,
> but the satellite, 
> is not at least 300ms one way or something like that
> ? adding the 
> codecs, and the jitter buffers and etc..I wonder how
> good/bad is it ?
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