[Asterisk-Users] Satellite Providers

[Bill Ford]

Even though radio travels "very fast" ...300,000 km/s (186,000 mph)
the speed is finite. As I said In my previous post...the satellite is
located 34,500 km (22,500 mi.) above the equator. That makes for a
round trip of 75,000 km (45,000 mi). Even at the speed of light, this
makes for a significant delay!)

Bill

On 5/11/05, Michael D Schelin <mike at shelcomm.com> wrote:
> The delay in the air is minor. Radio travels very fast through the air.
> Almost at the speed of light. It's the electronics that are causing the
> delays.  The less electronics touching your signal the better.   The up and
> down is very fast.  But then you have all the converts and the land line
> links to factor in.  Microwave also has delays such as the Motorola
> equipment which is only half duplex.  This will also incress the time.  Max
> is right, check into some ground based systems. 
> 
> 
> Max W Blackmer Jr wrote:
> Satellite delays are always bad. It is more a delay because of the time
it
> takes a signal to travel to the satellite and back to a receiving
station.
> You might want to check into ground station to station
microwave
> communications stations. The best is to have a tap to a phone
company that
> may have cell towers in the area.

Cheers,

Max

 
> -------- Original Message --------
Subject: [Asterisk-Users] Satellite
> Providers
From: "Yiannis Costopoulos" <lists at w2ns.com>
Date: Wed, May 11,
> 2005 12:23 pm
To: <asterisk-users at lists.digium.com>

Hi
> All,

 I am investigating the deployment of VoIP/* in Eastern European areas
> where
there is no PSTN infrastructure. As you can understand DSL/Cable
> connections
are a dream. The only option is satellite.

Does anyone know of
> any satellite providers that have low enough/acceptable
delays for
> VoIP?

Thanks,
Yiannis.

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