PRI
Primary Rate Interface. An ISDN subscriber line, consisting of twenty three 64 Kb/s B bearer or user channels and one 64 Kb/s D channel, used for signaling and synchronization.
Primary Rate Interface. An ISDN subscriber line, consisting of twenty three 64 Kb/s B bearer or user channels and one 64 Kb/s D channel, used for signaling and synchronization.
