Using multiple IPBlue Phones on one PC The IPBlue phones are very handy for the vmware/dynamips simulated voice lab. However, the problem is that when you start up a second instance, it defaults to the first MAC address available and the first and second instances start flapping trying to re-register to the call manager using the same MAC address. Here is a quick and 'not so dirty' solution: The phone basically reads its configuration from the windows registry when started. The trick is to make sure the appropriate MAC address is in the registry (assuming you have 2 or 3 NICs or Virtual vmnet interfaces in case of VMware) before you start the application each time. The settings are stored under HKEY_CURRENT_USER\Software\IPblue\ in the registry. Follow the procedure below to create multiple phone 'profiles' first Launch the IPblue phone Choose one of the available MAC addresses. Make sure settings on CCM / CCME is set correc...