GE 29579BE1 Amplified Corded Phone for Moderate-Severe Hearing Loss with Large Buttons & Caller ID Thomson Multimedia #29579BE1 Hearing-Impaired Telephone. Extra large backlit LCD, with Caller ID. Amplified volume up to 104 dB SPL Max Output. Big buttons for easy use. Amplified bass speaker phone. Vibrating Alert (may be removed from base) 3 Emergency call buttons. Enhanced visual ring indicator. 3-band equalizer for tone control.