[Freeswitch-dev] tone_detect_sleep & tone_detect_expires

Hi, I just found that tone_detect worked sometimes and sometimes it didn't work. For a short length of tone like 100ms, it worked well. But for a much longer one (700ms or 1sec without pause), it didn't work. This one has not been detected but in the recording file, it was obvious. by this wiki http://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_tone_detect I don't know how exactly the *hits* works. And later I found these 2 variables called *tone_detect_sleep* and *tone_detect_expires. *But I didn't find any explanations about them. Can anybody bring more details? Thanks.