[cisco-voip] Multi Site Environment without dedicated voice bandwidth..

[Aman Chugh]

Matthew,

I was running V3PN  for some time , had major issues with Voice quality as
the latency between sites was unpredictable and I had no SLA with the
provider for the same. In case you use G.729 between then you might need to
try the ccm parrametter mentioned in the second document as before that I
was not able to use G.729 due to poor voice quality.In case you are going
with it , try going over the V3PN SRND  listing out some of the best
practices for this.

http://www.cisco.com/application/pdf/en/us/guest/netsol/ns171/c649/ccmigration_09186a008074f2d8.pdf

http://www.cisco.com/en/US/products/sw/voicesw/ps1860/products_tech_note09186a00800b4a71.shtml

HTH

Aman


On 6/21/08, Peter Slow <peter.slow at gmail.com> wrote:
>
> Matthew,
>
> On 6/19/08, Matthew Loraditch <MLoraditch at heliontechnologies.com> wrote:
> >
> > So we have a customer who is buying into a new territory. They want to
> join
> > them to our current system, but in the loosest sense, they want to be
> able
> > to do extension dialing. They do not want to buy the needed dedicated
> > bandwidth to do clustering between the sites. All they want to do is VPN
> > tunnels over the internet. It's not the way I want but it's the way they
>
> Don't do that. This is your customer, you are going to be the one
> taking the heat  when this customer is screaming angrily at you about
> poor voice quality. Over VPNs, you're going to have an awful time even
> making an attempt at troubleshooting.
>
> >
> > Does this make sense in at least a general fashion? I'm going to be
> talking
> > to a CCIE about this tomorrow but was hoping for some input from all of
> you
>
> I'm a ccie =) do i count?
>
> There needs to be QoS for voice for it to be supported. if your
> customer does something like switch all of these acquired company
> sites to the same ISP as your main saite, or ISPs that offer guranteed
> QoS between each other. An MPLS VPN or dedicated site-to site circuits
> would be ideal for this type of thing so that there's no encryption
> taking place on the voice.
>
> You
>
>
> -Pete
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