> From: Norman Tyrrell <[email protected]> > Subject: ISDN PRI on NI-1? > > TREGers: > > In the U.S., much attention recently has been given to National > ISDN-1 as it relates to the Basic Rate Interface (BRI). My understanding > was that for Primary Rate (PRI), National ISDN did not introduce a common > interface until National ISDN - 2. However, recently, I have seen several > references to Primary Rate (PRI) testing and certification relating to > National ISDN - 1 ?!. > > If anyone could shed some light on the mystery of PRI and NI-1, your > comments would be greatly appreciated. > > -Norman Tyrrell > [email protected] >
