Re: Auditing a network to add Voice

[Kasper Adel <karim.adel () gmail com>]

Hi Bret,

These guys are not looking for measuring traffic generated by a tool, they
want to measure what they have running now (not only Voice). I am not sue if
measuring what they have or generating traffic and measuring it is the same
thing. what do u think?

thanks,
Kim

On Mon, Nov 22, 2010 at 5:54 PM, Bret Clark <bclark () spectraaccess com>wrote:

> Iperf can be used to measure jitter and delay as well as simulate a quasi
> VoIP call. You can also use mtr under Linux which provides jitter and delay
> measurements from one point to another point. A g.729 call (lower quality)
> takes about ~40kbps and a g.711 (high quality) used about ~100Kbps of
> bandwidth. With most of today's networks, the problem isn't bandwidth
> related, but more with jitter, delay, and packet loss through the
> network...personally I'm a big fan of deploying QoS through out an
> infrastructure...well at least in our WAN infrastructure.
>
> Bret
>
>
>
> On 11/22/2010 09:59 AM, Kasper Adel wrote:
>
> > Hi,
> >
> > My customer would like to add VoIP over their network and they asked us
> > for
> > an audit. the result of the audit would be simply "you guys are ready for
> > it"
> >
> > Breaking it down [high level] for me sounds like : (suggestions are more
> > than welcomed) :
> >
> > 1) Looking at hardware computation finite resources (cpu, memory...etc)
> > 2) Looking at available bandwidth
> > 3) QoS policy
> > 4) High Availability and Fast Convergence
> >
> > Any thing else?
> >
> > They asked us to measure the KPIs (jitter, delay...etc) of their existing
> > traffic, is there a way to do that?
> >
> > Thanks,
> > Kim