Page 404 - Asterisk™: The Future of Telephony

n
Does not answer the channel before playing the specified file. Without this option,
the channel will automatically be answered before the sound is played. Not all
channels support playing messages before being answered.

m
Only break if a digit hit matches a one-digit extension in the destination context.
The language argument may be used to specify a language to use for playing the prompt,
if it differs from the current language of the channel.
exten => 123,1,Answer()
exten => 123,2,Background('exter-ext-of-person');
See Also
ControlPlayback(), WaitExten(), BackgroundDetect(), TIMEOUT

BackgroundDetect() Plays a file in the background and detects talking

BackgroundDetect(filename[,sil[,min[,max]]])

Similar to Background(), but 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.

If unspecified, sil, min, and max default to 1,000 ms, 100 ms, and infinity, respectively.
exten => 123,1,BackgroundDetect(tt-monkeys)
exten => 123,2,Playback(im-sorry)
exten => talk,1,Playback(yes-dear)

See Also
Playback(), Background()

Busy() Indicates a busy condition to the channel
Busy([timeout])

Requests that the channel indicate the busy condition and then waits for the user to
hang up or for the optional timeout (in seconds) to expire.
This application signals a busy condition only to the bridged channel. Each particular
channel type has its own way of communicating the busy condition to the caller. You
can use Playtones(busy) to play a busy tone to the caller.

376 | Appendix B: Application Reference