audial(1nas) on Linux
The text 12c9fb953550, as Debian 2.2 (Potato), Debian 2.1 (Slink) shipped it.
generate or recognize touch tones for North American telephones
Flags it lists
-
-audio -
-duration -
-gain -
-microphone -
-pause -
-recognize -
-spacing -
-time -
-volume