How can I fix my AT&T E5828B Phone/Answer. Mach with Caller ID?

The Caller ID only shows the incoming number/name for the first ring; after that, it disappears from the screen and is replaced with the word, "Ringing". Not enough time to go to the phone, read the information and decide about answering it! VERY frustrating, as I take a chance and speak when I shoudn't have or don't answer to avoid someone. When ringing stops, the ID shows again; too late to help me! Can I change this? Help!