The instructions in the ssml file are read by TTS_callback. The markers in the ssml file are read by the supplementary code i have added to tts_callback and a cue.txt file is output to the cues folder. The cue.txt file contains a time in msecs, a file name (+trigger ‘extension number’ ‘io number’). The io numbers are 1 = receiver, 2 = kiosk, 3 = external, 4 = record from