How do I know if the Firmware of Reply Plus is compatible and up-to-date?

The firmware on keypad and base station must be compatible with the API used by PowerCom. As of January 2008, the firmware for the base station is V1.00, for the keypad it is V1.02, and for the WRS970.OCX it is V1.03, dated 11/28/2007. When you power on base station, the firmware version will be displayed on the LCD screen of the base. You can use keypad menu (Press Del and Base key at the same time) to check the keypad firmware version. To check the version of WRS970.ocx use file explorer to locate the OCX file in the Program files\PowerCom folder and right mouse click the wrs970.ocx file to open Properties and then the Version tab. It is a good practice to report firmware version when contacting PowerCom for technical support.