Trillium Panther 2064 90.0288 Standard Phone (Black/Refurbished)Key Features: Compatible with Trillium Panther 2064 system Part# 90. 0288 *The Trillium Panther 2064 Standard phone requires a Trillium Panther phone system to operate. The best way to make sure you are ordering the right Trillium Panther 2064 Standard phone is to turn the phone over and look on the bottom for the part number.