Phillip, You better keep tty to call 911 emergency. Some VRS provider have 911 service but include no PSAP. I will wait to listen from FCC next month that approve to require e911 (PSAP) for all VRS provider. E911 means that telecommunications based system that automatically associates a physical address with the calling party's telephone number, and routes the call to the most appropriate Public Safety Answering Point (PSAP) for that address. The caller’s address and information is displayed to the PSAP calltaker immediately upon call arrival. This provides emergency responders with the location of the emergency without the person calling for help having to provide it.