[asterisk-users] Ring back when free?

[Tony Mountifield]

In article <20080404110737.GB20322 at vanbaak.info>,
Michiel van Baak <michiel at vanbaak.info> wrote:
> On 10:35, Fri 04 Apr 08, Tony Mountifield wrote:
> > Has anyone here implemented "Ring back when free" in Asterisk?
> > 
> > The way it works in the UK is as follows:
> > 
> > 1. A calls B. B is engaged (busy).
> > 2. A hears "The number you called is busy. To use ringback, press 5"
> > 3. A presses 5, and hears "Your ringback request has been accepted".
> > 4. A hangs up.
> > 5. Later, B hangs up. The system then calls A (if A is now busy, it
> >    waits until A is clear again).
> > 6. If/when A answers, the system calls B on A's behalf and A hears ringing.
> > 
> > Any implementation has to cater for the fact that when B is busy, he
> > could be either the calling or the called party on his current call.
> > If he is the calling party, he will execute 'h' when he clears, but
> > if he is the called party, he won't be in the dialplan to execute 'h',
> > so we need some other way to invoke the ringback (step 5).
> > 
> > Thoughts?
> 
> Have a look at this:
> http://bugs.digium.com/view.php?id=10689

Thanks - looks interesting. However, I will need to implement this on
version 1.4 for now.

Cheers
Tony
-- 
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org