Pete Kay wrote: > Hi > > So is that the limit? I have heard people being able to run like 10K > call channels before max out CPU cap. I would verify the network throughput of your system to make sure the NIC/switch/etc are functioning normally, I use iperf to do this, really simple tool to use just need two systems. On a good network you should be able to sustain roughly 900+Mbit/s with standard frame sizes and iperf on a single gigE link(hopefully with no tuning) sample run: ------------------------------------------------------------ Client connecting to pd1-bgas01, TCP port 5001 TCP window size: 205 KByte (default) ------------------------------------------------------------ [ 3] local 10.16.1.12 port 54559 connected with 10.16.1.11 port 5001 [ 3] 0.0-10.0 sec 1.06 GBytes 912 Mbits/sec there are lots of options you can use to configure iperf to simulate various types of traffic. nate