*TEST BOTH PULSE AND DTMF TYPE TELEPHONE SETS
*PULSE AND DTMF TYPE AUTO-SELECTION
*12 DIGITS DIAL NUMBER, 3 DIGITS PPS AND 3 M/B RATIO
*ANALOG METER DISPLAY SIGNAL LEVEL
*TRANSMISSION, RECEIVING AND RINGER TEST
*PROVIDE ERROR LED TO INDICATE?BR>*FEEDING VOLTAGE DC 48V/60V SELECTION