The problem is with setting DHCP "IP Phones only". I had this set on a BCM400 4.0. The BCM is on the customers network. The problem is that the PC's were being given strange addresses through DHCP instead of the configured addresses from their DHCP server. They disconnected the BCM from the network, restarted the PC's and all was well. My understanding is that the BCM will not hand out IP addresses to any device but IP phones only. Has anyone had any experience with this?