Hi, I am trying to get a Cisco 7945 to register with 3cx. I have tried both 8.x and 9.x SIP firmware from the Cisco Website. The phone seems to be looking for SEP[mac].cnf.xml whereas 3cx is providing SIP[mac].cnf Can anyone point me in the right direction to get this working ? If it requires compiling configuration files by hand then why not use asterisk ? I thought this was supposed to be easy Thanks. M.