it has installation issue with my XP system, other please let us know if you have such problems. It get installed easly without any problem with WIN 2003.. If someone log in we need to restart the client to see the user status online. Get's automatically login again and again after some time. It should have differnt windows for LINE, Extension and Queues status so they can be easily identified.. otherwise it seeems to be a good sip sfot phone.