Real Time Text

The Real Time Text protocol (RTT, see RFC 4103) is used in NG9-1-1 to allow deaf or hard of hearing callers to communicate with 911 call takers.

The SipLib.RealTimeText namespace provides two classes for working with RTT media. The RttSender class is for sending RTT media and the RttReceiver class is for receiving RTT media.

The Samples/RTT directory in the SipLib GitHub repository contains two sample programs that demonstrate how to use the RttSender and the RttReceiver classes.