1. 911 Calling with TTY & Real-Time Text: Due to technical limitations, Wi-Fi Calling can’t be used with TTY devices and won’t support 911 calls over TTY devices. Persons with communications disabilities can use Real-Time Text (www.att.com/RTT) as an alternative to TTY. 911 services can be reached by either (1) calling 911 using Real-Time Text , or (2) calling 911 directly using a TTY over the cellular network or from a landline telephone, or (3) sending a text message to 911 directly (in areas where text-to-911 is available) from a wireless device, or (4) using relay services to place a TTY or captioned telephone service (CTS) call from a wireless phone over the cellular network or from a landline telephone, or (5) using relay services to place a IP Relay or IP CTS call over a cellular data or other IP network.