asterisk users - Aug 2010 - Dial option 'r' not working anymore?

Hello,

I have used the Dial option 'r' before in older Asterisk versions and it
behaved as expected, that is, Asterisk would always give ringback audio 
before the call was answered no matter what.

It has been a while that I have used version 1.4.33.1 without any the 
'r' option. Now that I had to use it for a while, I noticed that
'r'
would not give ANY audio until the call was answered.

I looked up the documentation of app Dial, but nothing new was 
mentioned, compared to the known 'r' behavior.

I also Googled it, looked through the mailing list, but I couldn't find 
anything to help me. In fact, I noticed that there was a lot of confused 
questions and even confused/confusing answers about the behavior of 'r'.

The extension that I use is pretty simple:

exten => _X.,1,Dial(SIP/${NUMBER}@x.y.z.w,,r,)

Does anyone know if the behavior of 'r' has changed but was not 
documented? If yes, then how does one inject ringback audio before the 
call is answered on the called end?

-- 
Best regards,
Vlasis Hatzistavrou.

Hi!
> Does anyone know if the behavior of 'r' has changed but was not
> documented? If yes, then how does one inject ringback audio before the
> call is answered on the called end? 
Search this list for "progress" or "progressinband", and
look at the voip-
info wiki.

http://www.voip-info.org/wiki/view/Asterisk+cmd+Progress

About 'r': There is a always the possiblity to introduce new 
bugs/regressions in newer Asterisk version; test two 1.4 versions and if 
you find a difference then consider to open a bug report.

In general: The 'r' option is very seldomly what you want to use, it 
presents the caller ringing even if the other side is busy/congested.

Philipp