[asterisk-users] using Playback() to play a random sound file

[Yuan LIU]

>From: Steve Edwards <asterisk.org at sedwards.com>
>Date: Tue, 1 May 2007 22:08:10 -0700 (PDT)
>
>On Tue, 1 May 2007, Yuan LIU wrote:
>
>>>From: Steve Edwards <asterisk.org at sedwards.com>
>>>Date: Tue, 1 May 2007 21:10:40 -0700 (PDT)
>>>
>>>On Tue, 1 May 2007, Jay Austad wrote:
>>>
>>>>I've got a directory under /var/lib/asterisk/sounds which contains a 
>>>>bunch of sound files.  I would like to call the Playback command to play 
>>>>the files, but I need it to select a file to play randomly.  Is there 
>>>>any way to do this?
>>>
>>>I do this with an AGI.
>>
>>In 1.4, there's also a dial plan function RAND().
>
>Doesn't RAND return a random number?
>
>How will that help to play back a random file in a directory?

Well, any randomness algorithm starts with a random number.  In Asterisk 
extension language, though, translating number to a file name takes a bit 
lifting - meaning lifting by you, not by a system command or by a well 
published procedure.  One way to do this is in dial plan is to use a static 
AstDB table. (AEL may have better ways but I don't know.)

Yuan Liu

>Thanks in advance,
>------------------------------------------------------------------------
>Steve Edwards      sedwards at sedwards.com      Voice: +1-760-468-3867 PST
>Newline                                             Fax: +1-760-731-3000