FS-7378 #resolve #comment play_and_detect_speech can now detect DTMF if you set the playback_terminators channel variable to any or specific DTMF.  The result will be stored in speech_detect_result and in playback_terminator_used.  Also added channel variable play_and_detect_speech_close_asr which will release the speech recognition port when the detection is completed.  This will prevent speech licenses from being held the entire call.