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Press these keys on the keypad: 1, 0, 0. The keypad backlight will go on and two tones will sound. Wait about 5 seconds; the keypad light will go off and then flash once. The unit is now switched back to Analog phone line and will stay in that setting the next time you turn the phone on. Using the Aura SoHo™ Conference Phone TO MAKE A CALL Press the Power Button .. to turn on the Aura SoHo™ Conference Phone, then enter the phone number for your call. ADJUST SPEAKER VOLUME Press the Volume Up ^ o