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RE: VoIP QOS best practices
From: "Ray Burkholder" <ray () oneunified net>
Date: Mon, 10 Feb 2003 13:28:15 -0500


QoS is important on T1 circuits and makes voice higher priority.  Voice
can even be done on sub T1 circuits with excellent results.  In this
regard, there are some additional packet sizing and fragementation
issues to worry about in order to make voice packet timing constant, but
nothing impossible to over-come.  There are commonly accepted industry
practices for this.  Old hat for many practitioners in the Voip world.

Ray Burkholder


-----Original Message-----
From: Charles Youse [mailto:cyouse () register com] 
Sent: February 10, 2003 14:09
To: Bill Woodcock
Cc: nanog () nanog org
Subject: RE: VoIP QOS best practices



My main concern is that some of the sites that will be tied 
with VoIP have only T-1 data connectivity, and I don't want a 
surge in traffic to degrade the voice quality, or cause 
disconnections or what-have-you.  People are more accustomed 
to data networks going down; voice networks going down will 
make people shout.

C.

-----Original Message-----
From: Bill Woodcock [mailto:woody () pch net]
Sent: Monday, February 10, 2003 1:05 PM
To: Charles Youse
Cc: nanog () nanog org
Subject: RE: VoIP QOS best practices


    > That doesn't seem to make a lot of sense - is it that 
QoS doesn't work as advertised?

That's generally true as well.  But why would you need it?  What's the
advantage to be gained in using QoS to throw away packets, when the
packets don't need to be thrown away?

    > As someone who is looking to deploy VoIP in the near 
future this is of particular interest.

Go ahead and deploy it.  It's easy and works well.  It 
certainly doesn't
need anything like QoS to make it work.

                                -Bill





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