Have a user that wants to recalibrate his speaker phone I told him to: Unplug your phone. Plug it back in. The display will read "PLEASE RESET SPKR" across the top and "Begin" just above the soft key on the left hand side. Push that soft key. You'll hear it calibrating.

Didn't work. I looked at it myself. There is another way to do it, can't recall what that is....

Candor - Intelligence - Good Will