[109215] in North American Network Operators' Group
RE: hosted PBX/VOIP thru VPN?
daemon@ATHENA.MIT.EDU (Tim Sanderson)
Tue Nov 11 22:24:29 2008
From: Tim Sanderson <tims@donet.com>
To: "nanog@nanog.org" <nanog@nanog.org>
Date: Tue, 11 Nov 2008 22:24:21 -0500
In-Reply-To: <041301c9446c$c6a33030$53e99090$@org>
Errors-To: nanog-bounces@nanog.org
Yes, dissuade him. If anything a VPN will add latency unless possibly gear =
is replaced to provide the VPN that is significantly greater than current. =
But... if a provider en-route decided to "slow down" competing voice traffi=
c, the VPN would hide it from the filters which might make it seem like voi=
ce traffic was speeding up. Of course that is a major "if".
Shouldn't take much to lab it, and show the customer the difference in qual=
ity, if any. Regardless, if the customer insists, it's billable so why not =
you than someone else. Just make sure said customer knows that you are not =
recommending the solution and why. If you implement the VPN and voice quali=
ty does not improve, you are covered.
--
Tim Sanderson, network administrator
tims@donet.com
-----Original Message-----
From: Lorell Hathcock [mailto:lorell@hathcock.org]
Sent: Tuesday, November 11, 2008 9:17 PM, if any
To: nanog@nanog.org
Subject: hosted PBX/VOIP thru VPN?
All:
My customer wants to try to improve performance to his ATAs by creating a V=
PN from his network to the VOIP provider's network through the internet.
I have to admit, the idea caught me flat footed. At the outset, it seems l=
ike we would want to do it just to improve security for end users. However,=
my customer wants it because he thinks it will improve performance (i.e.
voice quality). We are suffering from poor VOIP quality due to the Sprint =
/ Cogent depeering and subsequent squirming by our vendors.
The only reason I can think that VOIP thru a VPN would help is that
*perhaps* routers in the middle on ASNs I have no control over *may* priori=
tize VPN traffic higher than regular traffic. They opposite could also be =
true.
Specifically the ASNs in the middle are Level 3, Sprint and Time Warner.
Thoughts? Should I try to dissuade him from this if performance is his mai=
n motivator?
Thanks!
Sincerely,
Lorell Hathcock
OfficeConnect.net | 832-665-3400 (o) | 713-992-2343 (f) | lorell@OfficeConn=
ect.net
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