| Column | Function | Test Point Example | |--------|----------|--------------------| | COL0 | Key 1, 4, 7, * | TP-201 | | COL1 | Key 2, 5, 8, 0 | TP-202 | | COL2 | Key 3, 6, 9, # | TP-203 | | COL3 | Call, Left Soft, Right Soft, End/Power | TP-204 |