FOP2 does not monitor a phone config. It monitors only Asterisk. Call Forward, by default, is done using the Asteridk DB entry "CF/xxxx" that FreePBX uses in its own feature code for call forwarding. If your phone is not programmed to use the FreePBX feature code but uses its own settings, FOP2 won't monitor their states... that goes also to DND or other possible modes you might have.
Best regards,
