Phone has downloaded SIP configuration file from TFTP, so the phone has proxy, UID, LoginID and password entered correctly. Still the phone does not send any register -messages to sip proxy. In fact, it does not send anything at all. (I checked that with prserv, which creates a log file of the phone.) I have tried that with two different phones, but the result was the same. Should something appear in the log file when I try to call? Should it try to register even if the password/UID isn't correct?