I purchased the ConAir phone CallKeeper Digital Answering System for use with my analog phone service. It was quite easy to install to my phone and phone line. In the carton you received the answering system, AC adaptor, Quick Reference Card, Instruction Booklet/Warranty Information, Quick Set Up Guide, and line cord. You have 45 seconds on which to record your outgoing message. I feel that is more than enought time to record what you would like to say. You simply hold down the announcement button and begin to record your outgoing message. The answering system has special features including message capacity full detection, call screening, adjustable ring select and toll saver. I like the call screening feature which allows you to hear who calls before actually answering the phone. You can choose to answer or let the machine answer the call. Great feature if it someone you do not wish to speak with at the time. I also like the toll saver feature. The toll saver feature allows you to check from another number if you have received any new messages before it answers thus saving you time and money. The only drawback to this machine is no privacy everyone in the house can play and listen to the message. I think it is a great machine for the price.