Lots of good info and pointers so far. But do keep in mind that not all phones will automatically reboot just because you sent it a "check-sync" or "resync" event with the "sip notify" command.<br>
<br>I vaguely remember that for e.g. the Polycoms some other condition had to be true: either the phone's config file on the ftp/tftp server had to have a newer time-stamp than the one that was downloaded during the phone's last boot, or a config option had to be set to a non-default value to make the phone reboot unconditionally upon receiving the SIP notify, regardless of the config file's modification date.<br>