I have 3cx installed before and it worked perfect. Now I'm behind a belanced router (draytek) and two internet connections: ADSL and Cable. I can't get the program to work. I have opened the ports and I get the following message: 10:13:19.125 IVRConnected [CM111000] IVR Server is connected 10:13:19.109 ListenConnect [CM114000] SL: connected CP715967-A:5483/IVRServer at [CP715967-A:5483]/IVRServer 10:13:17.234 CallMgr::Initialize [CM000002] *!* Failed to initialize SIP stack! 10:13:17.203 gt;>:Failed to create transport: V4 UDP 5060 on ANY 10:13:17.093 gt;>:[ V4 0.0.0.0:5060 UDP target domain=unspecified connectionId=0 ] already in use 10:13:17.093 CallMgr::Stack::Initialize [CM106000] ** Adding transports ** 10:13:17.000 CallMgr::Initialize [CM100003] ** Initializing SIP stack ** 10:13:17.000 CallMgr::Initialize [CM100002] Default Local IP address: 192.168.1.13:5060 10:13:15.718 ListenConnect [CM114000] SL: connected CP715967-A:0/VoiceBoxManagerService at [CP715967-A:0]/VoiceBoxManagerService 10:13:15.421 MediaServerConnected [CM112000] Media Server is connected 10:13:15.421 ListenConnect [CM114000] SL: connected CP715967-A:0/MediaServer at [CP715967-A:0]/MediaServer 10:13:15.156 CallMgr::Initialize [CM100001] Version: 3.1.2434.0 10:13:15.156 CallMgr::Initialize [CM100000] Start 3CX PhoneSystem Call Manager 10:13:15.125 LoadLicenceInfo [CM100008] Licence loading error Anyone?