[asterisk-users] difference between playback and background?

[Danny Nicholas]

First question - playback is not interruptable by DTMF, background is.
You have two options here
Option 1
Use Read
[getnum]
Exten => start,1,read(mydigit,prompt,4,skip,1,2)
.. verification stuff

Option 2 
Use WaitExten with Background
[getnum]
Exten => start,1,background(prompt)
Exten => start,n,waitexten(2)
Exten => 1111,1,noop(user pressed 1111)
Exten => I,1,playback(invalid)

For option 2 you have to define each valid 4 digit entry in the context.

Yes it can be maddening, but you get what you pay for.

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Edward de Jong
Sent: Monday, November 21, 2011 11:51 AM
To: asterisk-users at lists.digium.com
Subject: [asterisk-users] difference between playback and background?

In the dial plan language of asterisk, what is the difference between
prompting the user with a Playback() command vs. a Background() command? I
want in a part of my dial plan to ask the user a prompt, and wait for 4
digits to be typed in. I don't want the user to have to end the string with
a pound or something, just wait 2 seconds after they stop typing. ANd I do
want the prompt to be interruptible if the user is fast and knows already
what to do. 

I need to do some tests on the number they entered. If i use background(),
and say the prompt, and then follow with a WAIT command, how do i reference
the number they just typed in? does asterisk set the ${EXTEN} variable when
the user types something?

What I find maddening about the asterisk documentation is a lack of clarity
on the sequence of things, and what variables get set when?


--
_____________________________________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to
Asterisk? Join us for a live introductory webinar every Thurs:
               http://www.asterisk.org/hello

asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
   http://lists.digium.com/mailman/listinfo/asterisk-users