[Asterisk-Users] Satellite WAN

[Alex Vishnev]

Adam,

I personally think that replacing hard-wired network and going with Sats is
a mistake. Judging from pure round-trip delay you measured the packet round
trip seems sufficient to have a good conversation, but pinging is not enough
to trouble shoot the network problems. You will need to do a lot more work
to identify the problem with this location. If both locations are under your
control, then I would put network probes in both places to identify exactly
when and how the quality problems appear. Network probes would identify the
type and the amount of traffic both sides are sending and receiving. There
are network probes that can even do Voice Quality Analysis and determine how
well your network is performing. As a side step, I would also look at
internal location in New Brunswick, because that is the only location you
are having problems with. I would check to see if there are simple network
problems like bad network port, network card, packet collision on the
network, network card on routers, etc. I am sure you have already considered
simple things like that, however you need to methodically go thru each one
to see where the problems are. Replacing the network would be my last
alternative. If you are at that point, well.... then just ignore this email.
Otherwise, there are plenty of things you can do before taking such a
drastic measure.

HTH

Alex

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Adam Robins
Sent: Wednesday, November 02, 2005 12:01 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [Asterisk-Users] Satellite WAN

 
We have built an Asterisk network using an MPLS-based IP VPN.  We have
one location in New Brunswick Canada that consistently gives us major
quality problems, whereas the others are flawless.  Quality problems
take the form of static, poor voice tonality, popping & clicking, drops,
sporadic echo, you name it.  The latency of a QoS prioritized packet
between the Canada site and our hub in Atlanta is 85ms (ping).

I have been searching for an alternative network provider, but I'm told
that they would all take the same route from the US into Canada, as
there is simply no major backbone running into NB east of Toronto.

So now I'm thinking about satellite.  I have no idea if a) this would
even be economically feasible, and b) if the latency would be any
better.

If anyone out there has had any such satellite network experience with
VoIP, I like to hear from you.

Thanks,
Adam

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