I have no instruction book. The model number is 2551 and there is a A in the window where it number of calls should be. I can not receive messages because of it. If you can send me an instruction book. I sure would appricaate it.mY address is Verbia Wilder--2713 Rollingwood--Tyler, Texas 75701

Here is how to communicate with someone in your Address Book:

Locate and click a person in your Address Book group.

1. Find the Address Book group in your Messenger list (scroll down if you need to - the Address Book group is the last group in the list).
2. Click the triangle next to Address Book to open the group.
3. You should see a window that has options such as Call Home Number, Call Mobile Number, Send Email...etc. Select the appropriate one.
4. Depending on their setup (or how much of their information you've got), you can IM them, text message them, email them, or place a computer-to-computer or computer-to-phone call.

Note: You must have the required information in the Address Book field to perform one of the above functions.