First, I have confirmed that EndPoint Manager (EPM) under FreePBX *does* continue to use the old file name conventions even though they are using 3.3+ Polycom firmware. No real issue there, as long as you are aware of it.
The "ringer1" got rid of the phone ringing before going off-hook. There is a little beep on the phone when it goes off-hook, which is perfect. The timeout=500 gets the phone off-hook in 1/2 second instead of the 2 full second default.
It appears that all other <se /> settings were unaffected by the single table entry change that I made.