Yes That's what I mean. I have a manual that I downloaded from the Internet. NO, I do not need help because I love playing with technology in my free time. I am trying to learn more about telephone systems. I think they are very interesting. However, you still did not ask my question of how to connect external CO lines. The manual does a terrible job if you are not familiar with the system. Please tell me if you know. There is no reason to be getting upset with me. I am just a curious person trying to learn more. That's why I turned to the community. smile