libpri: libpri (Primary Rate ISDN specification library) libpri: libpri: libpri is a C implementation of the Primary Rate ISDN specification. libpri: It was based on the Bellcore specification SR-NWT-002343 for National libpri: ISDN. As of May 12, 2001, it has been tested work with NI-2, Nortel libpri: DMS-100, and Lucent 5E Custom protocols on switches from Nortel and libpri: Lucent. libpri: libpri: libpri: libpri: