[181402] in North American Network Operators' Group
Re: Residential VSAT experiences?
daemon@ATHENA.MIT.EDU (Tim Franklin)
Tue Jun 23 04:44:46 2015
X-Original-To: nanog@nanog.org
Date: Tue, 23 Jun 2015 09:44:40 +0100 (BST)
From: Tim Franklin <tim@pelican.org>
To: NANOG <nanog@nanog.org>
In-Reply-To: <274163724-1435013345-cardhu_decombobulator_blackberry.rim.net-1126150793-@b1.c3.bise6.blackberry>
Errors-To: nanog-bounces@nanog.org
> Interesting that you say that about sip. We had a client that would use it
> for sip on ships all the time. It wasn't the best but it worked. Ping times
> were between 500-700ms.
It really depends on your expectations - or more to the point, your end-users' expectations.
I've tested SIP in the lab up to 2000ms RTT. The protocols all hang together and keep working, but it's obviously very much in walkie-talkie mode, you can't hold a normal duplex conversation. 500ms there's more of the talking over each other / "sorry, you go" / "no, you go" dance, but it *is* workable. If your end-user is expecting land-line replacement though...
Regards,
Tim.
