Hello! I am using 3CX Version 9.0.15781.949 on Windows XP SP3 with Enhanced Write Filter enabled. I am using a small 2GB flash disk and I have barely enough room to squeeze the required DOT Net Framework 3.5 on the system. These are the services running on my computer related to 3CX: The program is used with two Polycom 335 telephones. I currently have two SIP endpoints, one in my downstairs and one in another room downstairs. I use the program to facilitate G.722 calls, and that is all I use it for. I am looking to disable services that are not needed to free up RAM. I disabled the "FAX Server" and the "Tunneling Proxy" because I am fairly confident I do not need those. I also disabled "Voicemail Manager" because I don't need voicemail. What else can I disable? Can I disable: —the "Conference Room" —the "Digital Receptionist" —the "Media Server" —the "Parking Orbit" —the "Queue Manager" ? I cannot upgrade to a newer version of 3CX because there is not enough disk space for me to install a newer version of DOT Net. Further, this version does everything I need it to (officiate reliable G.722 calls in both directions with no echo or lag) for free. I don't want to break anything, but I also do not wish to "pay" in terms of memory usage for those services I do not require. I have tried many Windows programs, and this is the only one that reliably allows both SIP endpoints to make and receive calls with G.722 given the hardware constraints I face. I am a computer hobbyist, not a business, and while this program does/can do way more than I need it to, the fact it is free and works well is good enough for me. Thank you for the help!