[Asterisk-Dev] libpri ISDN features

[creslin at digium.com]

On Wed, Nov 24, 2004 at 03:02:26PM -0500, Clint Guillot wrote:
> My application requires access to some of the ISDN features not present 
> in the current libpri.
> I would like to start working on some of these features, but have two 
> questions:
> 
> Where can I find definitive information on the content of ISDN Facility 
> messages?  Libpri
> currently implements only the callerid name message, and only incoming 
> as far as I can tell.
> I've found a lot of info via google, but haven't come across anything 
> that looks to
> be a definitive list of message types and formats.  I only need a few 
> of the features
> (specifically OP:MWI/RMV:MWI and DNIS) but I figure while I've got the 
> hood up...

I've been working on a few of those features.  If you would like to see
what I've been working on, you can check out the libpri-matt tree (you have
to check it out from origcvs.digium.com.  cvs.digium.com doesn't mirror it,
last time I checked) to play with some of the other parts that I have working.

I'm starting on MWI right now, so that will probably be in there in the near
future.  Most of the work I've been doing has been in relation to Q.SIG,
but I'm pretty sure that a lot of the Q.SIG features are very similar (and
in some cases exactly the same) to the "standard" features.  The docuemnts
that I have been referencing in relation to this are the ECMA (_free_ :-) )
documents on the ECMA website.  The specs that I'm refencing for MWI are
ECMA-241 and ECMA-242 and are available on the ECMA website for download.

Matthew Fredrickson