Implementations enable conversations between operators of communication devices who use sign language and other operators who don't. A method may include receiving images of first sign language gestures captured by a camera of a first communication device, converting the first sign language gestures into first text, transmitting the first text to a second communication device, receiving second text from the second communication device, and converting the second text into images of second sign language gestures made by an avatar. The method may also include operating the camera to capture the images of the first sign language gestures and presenting the images of the second sign language gestures on a display of the first communication device. The method may further include receiving first speech captured at the second communication device, converting the first speech into third text, and then into images of third sign language gestures made by the avatar.