[Asterisk-Dev] libpri ISDN features

[Kris Boutilier]

> -----Original Message-----
> From: Clint Guillot [mailto:clint at helixsystems.com]
> Sent: November 24, 2004 12:02 PM
> To: Asterisk Developers Mailing List
> Subject: [Asterisk-Dev] libpri ISDN features
> 
> 
> 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? 

I believe you're looking for a copy of the Q.931 standard. It should spell
out, to the bit level, what needs to be set and how for each and every
message. I have been looking for a copy to read up on ISDN MWI
implementation, but haven't found a copy publicly available. The engineering
document sources I have located are indexed at:
http://www.voip-info.org/wiki-Telco+Engineering+Information However, unless
you have better sources you're probably going to need to purchase a copy
from:
http://www.itu.int/rec/recommendation.asp?type=products&lang=e&parent=T-REC-
Q

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> MWI, for instance, is used to turn on/off the message waiting indicator on
a 
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If you're able to get ISDN MWI going there are quite a few people who would
be interested...

Thanks.

Kris Boutilier
Information Systems Coordinator
Sunshine Coast Regional District