I am having trouble making changes in my phone system, such as name and message changes. I have some of an old manual that was given to me but not all our phones are the same model number. I have T7316E and T7208. Right now I am locked out of the T7208 and cannot figure out how to get it unloked and then move on to the corrections. I really need a copy of the manuals for these 2 model numbers.