Although you have your rights, it's also important to be reasonable.
Here's an example of a deaf person being unreasonable...
This woman is deaf. She doesn't have clear speech. No one can understand her. Not even a skilled lipreader can understand her. She walks up to the front counter at a local Taco Bell. When she tries to order her food, the cashier cannot understand her. He asks her to repeat. She gets upset and accuses the cashier of being ignorant. The cashier decides to give her a piece of paper and pen so that she can write down her order. She gets upset again cuz she feels insulted that she was asked to write on paper and pen. A hearing woman behind her offers to interpret for her (she's an interpreter at a local college). She gets upset again saying that she never asked for an interpreter and that she can do fine on her own. She says that she has a right to order any way she wants.
Now, was she being reasonable? We can't expect Plan A to go our way. If Plan A doesn't work, be willing to accept Plan B or Plan C.
That's how it is with requesting accommodations with your employer. You shouldn't be very demanding and the ADA does require them to give you "reasonable" accommodations. So, don't be too unreasonable. "I want that T-coil set up in my office!" "I want an interpreter sitting next to me at all times!" "I demand C-print along with my interpreter in all meetings!" That's too much.