[Users] OpenserAdmin: openser log

In the log file (OpenserAdmin) I see my registered phones with different addresses. I would like to know what it means: a. public IP with a port number sip:7111@59.124.230.151:65129 b. private IP with a port number sip:7112@192.168.10.75:5060 c. private IP with NO port number sip:7113@192.168.10.45 d. Eyebeam with public IP with port and rinstance (???) sip:7311@203.70.36.126:65321;rinstance=059afa5458d206a7 e. Gizmo phone, secondary number should be 7312. sip:17476063396@proxy01.sipphone.com:5060 d. and e. are on my desktop connected to a ADSL router, which obviously makes the NAT to 203.70.36.126, my current public IP on that line. b and c are also on a private network and connected through the same ADSL router as a. Why a has a public IP, while b and c not? Why have all a port, but c not ??? bye Ronald