Introduction; Isdn Reference Points - Patton electronics SmartNode Series Software Configuration Manual

27 • ISDN port configuration

Introduction

This chapter provides an overview of SmartNode ISDN ports and describes the tasks involved in configuring
ISDN ports in SmartWare.
ISDN ports are the physical ISDN connections on the SmartNode devices. There are two types of ISDN ports:
• The ISDN basic rate interface (BRI), and
• The ISDN primary rate interface (PRI).
A BRI port supports two 64 kbps B-channels for switched voice or data connections, one 16 kbps D-channel
for signaling and always-on data transfer. BRI ports are sometimes called S0 ports. The related PSTN access
service is also called Basic Rate Access (BRA).
The PRI port supports thirty 64 kbps B-channels, one 64 kbps D-channel and one synchronization timeslot
on a standard E1 (G.704) physical layer. PRI ports are also called S2m ports. The related PSTN access service
is also called Primary Rate Access (PRA).

ISDN reference points

The ISDN standards define a number of reference points on the interfaces between the various equipment
types on an ISDN access line.
points and where they are located is necessary for the configuration of the SmartNode ISDN ports.
342
Figure 66 illustrates these reference points. The understanding of these reference
Figure 66. ISDN reference points
SmartWare Software Configuration Guide

Introduction