When you call 9-1-1 for emergency services from a land line located in a home, business or other facility, your phone number will determine which 9-1-1 emergency center will receive your call for assistance. If a caller is using a cell phone, the wireless signal is transmitted to the nearest cell tower and is then forwarded on to the closest 9-1-1 dispatch center. In the event that your cell phone call needs to be transferred to another 9-1-1 agency, you will be assisted by the staff who took your initial call to provide assistance. If you are hearing or speech impaired, Illinois 9-1-1 agencies are equipped with a Text Telephone (TTY), also known as a Telecommunications Device for the Deaf that provides communication through your TTY/TDD device. NORCOMM personnel are also trained to work with relay services and are able to handle your request. If you do not speak English, we are able to contact the Language Line to provide an interpreter.