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