Does anyone know where I would find sound file examples of Jitter, latency, echo, delay, etc. related to VoIP call quality? I would like to compare sounds experienced by others to the complaints we are recieving. People tell me about hiss or wind noise, drop outs in the voice, and distortion. The problem is it is not repeatable on demand. It only occurs one direction on the call, allways in the same direction - at the same endpoint location / system.
We are in the process of implementing DiffServ QoS forour Avaya IP Office phone systems accross our Nortel Contivity routers and HP Ethernet switches. The communications accross the WAN is 1Mbps to 2Mbps burst utility company based fiber optic with approx 5 - 10 ms ping response time. The remote location only has about 8 computing devices that generate traffic through the IPSEC tunnels to our location.