BackgroundDetect() — Plays a file in the background and detects talking
attempts to detect talking.
During the playback of the file, audio is monitored in the
receive direction. If a period of non-silence that is greater than
min milliseconds yet less than
max milliseconds and is followed by silence
for at least
sil milliseconds occurs, the
audio playback is aborted and processing jumps to the
talk extension, if available.
default to 1,000 ms, 100 ms, and infinity, respectively.
-1 on hangup, and
0 on successful playback completion
with no exit conditions.
exten => 123,1,BackgroundDetect(tt-monkeys) exten => 123,2,Playback(im-sorry) exten => talk,1,Playback(yes-dear)