Corded Phones dB Level Visual Ringer Caller ID Large Button Loud Ring Speaker Phone Outgoing Voice Audio Jack Headset Jack Answering Machine Adjustable Tone/Frequency
                     
55dB YES   YES YES     YES     YES
50dB YES   YES YES YES YES YES     YES
50dB YES YES YES YES YES YES YES YES   YES
50dB Lamp Attach YES   YES     YES YES   Two levels for use with and without hearing aids
50dB YES YES YES YES YES   YES     YES
50dB YES   YES YES YES   YES     YES
48dB YES   YES YES     YES     YES
  dB Level Visual Ringer Caller ID Large Button Loud Ring Speaker Phone Outgoing Voice Audio Jack Headset Jack Answering Machine Adjustable Tone/Frequency
43dB YES YES YES YES YES     YES   YES
40dB YES   YES YES     YES     YES
40dB YES   YES YES   YES       YES
40dB YES   YES YES           YES
40dB YES YES YES No traditional ring sound; plays tunes only YES          
  dB Level Visual Ringer Caller ID Large Button Loud Ring Speaker Phone Outgoing Voice Audio Jack Headset Jack Answering Machine Adjustable Tone/Frequency
30dB YES   YES YES     YES     YES
30dB YES   YES YES     YES YES YES Amplified in high frequencies only
30dB YES YES YES YES     YES YES   YES
  dB Level Visual Ringer Caller ID Large Button Loud Ring Speaker Phone Outgoing Voice Audio Jack Headset Jack Answering Machine Adjustable Tone/Frequency
26dB YES   YES YES     YES      
28dB YES   YES YES            
18dB YES   YES YES   YES        
28dB YES YES YES YES YES          
18dB YES YES YES YES YES          
  dB Level Visual Ringer Caller ID Large Button Loud Ring Speaker Phone Outgoing Voice Audio Jack Headset Jack Answering Machine Adjustable Tone/Frequency