In an originated outbound session that is in progressing phase, I do, via esl socket outbound, a "tone_detect". When I receive the event "DETECTED_TONE" I do the "stop_tone_detect" but sometimes the stop has no effect and I see in the log the warning: "switch_core_session.c:1955 Cannot execute app 'stop_tone_detect' media required on an outbound channel that does not have media established" But the media is present (the tone is correctly detected!). The event I receive on this channel are (in sequence) CHANNEL_UUID CHANNEL_OUTGOING CHANNEL_ORIGINATE CHANNEL_STATE - CS_INIT CHANNEL_STATE - CS_ROUTING CHANNEL_STATE - CS_CONSUME_MEDIA CHANNEL_PROGRESS CHANNEL_PROGRESS_MEDIA CHANNEL_STATE - CS_EXECUTE CHANNEL_EXECUTE CHANNEL_PARK then I do the "tone_detect" and I receive: CHANNEL_EXECUTE MEDIA_BUG_START CHANNEL_EXECUTE_COMPLETE DETECTED_TONE so I do the "stop_tone_detect" that fails in the log Please, can anyone address me to solve this issue?