libpri: An implementation of Primary Rate ISDN



Written by Mark Spencer <markster@digium.com>



What is libpri?

===============



libpri is a C implementation of the Primary Rate ISDN specification.  It was

based on the Bellcore specification SR-NWT-002343 for National ISDN.  As of

May 12, 2001, it has been tested work with NI-2, Nortel DMS-100, and 

Lucent 5E Custom protocols on switches from Nortel and Lucent.



What is the license for libpri?

===============================

libpri is distributed under the terms of the GNU General Public License, 

which permit its use and linking with other GPL'd software only.  

The GNU GPL is included in the file LICENSE in this directory.



As a special exception, libpri may also be linked to the OpenH323

library, so long as the entirity of the derivative work (as defined

within the GPL) is licensed either under the MPL of the OpenH323 license

or the GPL of libpri.



If you wish to use libpri in an application for which the GPL is not 

appropriate (e.g. a proprietary embedded system), licenses for libpri 

under more flexible terms can be readily obtained through Digium, Inc. 

at reasonable cost.





How do I report bugs or contribute?

===================================

For now, contact the author directly.  In the future if there is 

sufficient interest, we will setup a mailing list.



Does anything use this library so far?

======================================

Yes, the Asterisk Open Source PBX does.  http://www.asterisk.org



Also, the Zapata library has hooks for it.  http://www.zapatatelephony.org



Special thanks

==============

Special thanks to Jim Dixon <jim@lambdatel.com> for his help in 

testing and fixing the implementation.