[Freeswitch-users] Freeswitch kills my home voip phone

Hi All, I'm a total freeswitch noob at the moment. I was playing at home with FreeSwitch on Windows compiled from source. I have a router at home that registers with my ISP's voip SIP server. My hard phone is connected to that router to make calls. Whenever I have FreeSwitch running on my PC (which is on the same LAN as the router) I lose my VOIP connection to the ISP and I can't re-register until I reboot my internet connection. This happens straight out of the box. Why is this happening? Also while freeswitch is running I can't seem to make any calls ... is Freeswitch hijacking my connection? Thanks, Oliver