The phone book feature or “FeenBook” has been available in FeenPhone for some time (tutorial here.) But as of the July 16th 2015 version, you can also save passwords in the FeenBook. Here’s how.
After you’ve entered and saved an IP/port combination, right click on it to reveal the context menu:
Highlight “Set Password.”
Type your password and hit “Apply”;
Next time you open FeenBook and double click an entry then hit “connect” to “dial”, the password will be entered along with the IP and Port info.