[VoIP] How to do more then one thing at the same time in a extension dial plan?

[Mark Rudholm]

gijones at clear.net.nz wrote:
> Hi All
> 
> I am not sure if this is possible but I want to be able to playback a recording to a caller but at the same time be ringing another phone and both things stopping when the caller hangsup.
> 
> I'll explain what I am trying to do.
> 
> I am a volunteer in the telecommunications section of a museum.
> We have a map showing how phone calls can go around the world.  It has strings lights inside plastic tubing.  Some go off the map to a satellite then back down.  Others lie flat on the map representing submarine cables.  This was made 10 - 20 years ago.  All that was done is that the lights for each route are wired to an extension on a step by step PABX.  So to work it a visitor simply dials the extension number for the country they are interested in.  The caller doesn't hear anything but ringback tone.
> 
> One of the members has suggested we have  greetings appropriate to the country.  The playback and ringing individually is not a problem but I need both things to happen at the same time.  I would like to use the exisiting system to save a big rewiring job.  I already have the Asterisk box connected to a small PABX that can then dial into the bigger PABX.
> 
> Any help will be greatly appreciated.

So, in essence what you're trying to do is replace the standard
ringback call progress tone with an arbitrary recording.  This
is very easy to do with the "m" option in the Dial() command.
It lets you set a Music-on-Hold class as the ringing call progress
tone.

You'll want to set things up so that the recording starts from
the beginning each time it is played.  I'm not sure how to do
that but I suspect there's a way.