[Freeswitch-dev] start_dtmf detects dtmf as may times per dtmf as many times start_dtmf issued.

Just noted that my ESL get as may DTMF events per single keypress as, many times I issued start_dtmf on the uuid. it means if I do: execute('start_dtmf') execute('start_dtmf') I get the same DTMF event twice. Is that expected behavior? Logically, it supposed to to trigger detection on/off