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RE: VoIP QOS best practices
From: "Christopher J. Wolff" <chris () bblabs com>
Date: Mon, 10 Feb 2003 10:01:06 -0700


Jason,

I believe Global Crossing supports those sites, keep in mind I don't
sell their product, but UUNET should as well.  

Regards,
Christopher J. Wolff, VP, CIO
Broadband Laboratories, Inc.
http://www.bblabs.com

-----Original Message-----
From: owner-nanog () merit edu [mailto:owner-nanog () merit edu] On Behalf Of
Jason Lixfeld
Sent: Monday, February 10, 2003 9:58 AM
To: Christopher J. Wolff
Cc: nanog () nanog org
Subject: Re: VoIP QOS best practices


Providing your sites are local to the same ISP, that would be fine.  
Worst case scenario and probably a more likely scenario in most cases 
is that company A has a satellite office in Boston, one in Sydney and 
one in Tokyo while their head office is in Toronto.  Not a very wide 
range of providers who can reach those areas, not to mention wether or 
not they can deliver MPLS.


On Monday, February 10, 2003, at 11:52 AM, Christopher J. Wolff wrote:

Jason,

My strategy would be to use the same carrier at point A and point B
and
purchase some kind of high-priority MPLS switching config between the
two.  I believe Global Crossing offers something like this where they
differentiate between the proletarian traffic and the uber-business
traffic.

The other thing to keep in mind is that QoS only comes into play when
you saturate your links.

Regards,
Christopher J. Wolff, VP, CIO
Broadband Laboratories, Inc.
http://www.bblabs.com

-----Original Message-----
From: owner-nanog () merit edu [mailto:owner-nanog () merit edu] On Behalf
Of
Jason Lixfeld
Sent: Monday, February 10, 2003 9:47 AM
To: nanog () nanog org
Subject: VoIP QOS best practices


Looking for some links to case studies or other documentation which
describe implementing VoIP between sites which do not have point to
point links.  From what I understand, you can't enforce end-to-end QoS
on a public network, nor over tunnels.  I'm wondering if my basic
understanding of this is flawed and in the case that it's not, how is
this dealt with if the ISPs of said sites don't have any QoS policies?

-jL



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