[Asterisk-Users] SIP / IAX over satellite

[Uriel Carrasquilla]

Dream on about the 100 ms or less.  Once you get to the satellite, it is the
same time regardless of where you are going on the foot print of the
satellite.   Speed of Light does not understand American speed limits.  Of
for that matter Europeans.  The speed of light is constant.  Just pick up
your calculator, take the distance to travel and you will see your 1/4
second each way. That does not include all the delays caused by modems,
routers, packetizing streams, etc.
Regards
Uriel

-----Original Message-----
From: asterisk-users-admin at lists.digium.com
[mailto:asterisk-users-admin at lists.digium.com]On Behalf Of
andrewg at felinemenace.org
Sent: Saturday, October 11, 2003 7:29 PM
To: asterisk-users at lists.digium.com
Subject: Re: [Asterisk-Users] SIP / IAX over satellite


I was looking into using satelitte for a backup internet connection at one
stage, iirc, its:

- 500ms transmit/recieve latency
- if yours sat connection terminates in the us, you should be able to reach
  most place in <30ms
- if you're going to europe (from the termination of the sats in the .us),
it
  will most likely be <80ms.

Those figures I got from about 2 different sales people. But this is from
memory.

(That said, in all cases it was better than a "landline" internet
connection,
due to the country and surrounding countries.)

Thanks,
Andrew Griffiths

On Sat, Oct 11, 2003 at 06:03:24PM -0500, Tilghman Lesher wrote:
>
> On Saturday, Oct 11, 2003, at 17:04 America/Chicago, Paul Mahler wrote:
>
> >Which satellite system?
> >
> >I think you need some specialized support, even special hardware.
> >Check
> >out
> >
> >http://www.groundcontrol.com/igvoip_001.htm
> >
> >You may need to replace TCP/IP
> >
> >http://www.mentat.com/skyx/skyx-gateway.html
>
> I don't know why he'd need to replace TCP/IP when both SIP as well as
> IAX use UDP/IP.  There may be substantial latency, however.
>
> -Tilghman
>
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