libpri: An implementation of Primary Rate ISDN
Written by Mark Spencer markster@digium.com
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.
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.
For now, contact the author directly. In the future if there is sufficient interest, we will setup a mailing list.
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 to Jim Dixon jim@lambdatel.com for his help in testing and fixing the implementation.