Conair Tad1216 How Do I Operate My Conair Phone Digital Answering System Model #TAD1216PWT?

How do I operate my Conair Phone Digital Answering System Model #TAD1216PWT? - conair tad1216

I bought the Conair Digital answering Model # TAD1216. You are not come with a manual. Can someone help me? I saw a manual on this site for the Model # TAD1212. Are they the same? Can the manual for my Model # TAD1212 Model TAD1216? I really appreciate your help!