scope:

This document covers maintenance of the Primary Rate Access (PRA) physical layer, which consists of equipment and facilities that exist as part of the customer access and the customer installation.

Maintenance of the data-link and network layers associated with the primary rate interface is covered in another ISDN management standard.

Purpose

The purpose of this standard is to establish required capabilities for the maintenance and operations needed for the primary rate physical layer associated with access to Integrated Services Digital Networks (ISDNs).This standard establishes needed maintenance functionality in customer and network equipment, particularly from the perspective of maintenance functionality available at the network boundary and from Operations Systems.