The source of the password when the ccDetailsLoginType object has a value of 'userdb', 'radius', 'tacacs' or
'all'. The value 'none' means no password is defined. The value 'cli' means take the password from the
calling number information in the SETUP message. The value 'calledsub' means take the password from the called
subaddress information in the SETUP message. The value 'useruser' means take the password from the user-user
information in the SETUP message. The value 'callname' means take the password from the call details entry name.