ABSTRACT: This document replaces FA-NWT-001345, but contains NO TECHNICAL CHANGES from that document.

It has been reissued strictly to conform to the Telcordia Technologies document format. The requirements criteria in this GR remains the Telcordia early preliminary view of Synchronous Optical Network (SONET) operations applications that either are required or may be required in the future for Element Managers (EMs) managing SONET subnetworks. SONET EMs, sometimes referred to as SONET Subnetwork Operations Controllers (SOCs), can be used to enable a more efficient and responsive operations architecture to manage the constantly evolving telecommunications network.

SONET EMs are intended to shield the complexity and details of the management of individual SONET architectures and vendor products from network level management applications (e.g., Operations Systems). Preprocessing and filtering of messages from subnetworks of SONET NEs are also important features for SONET EMs. Many applications and interfaces are identified (at this time, in a functional manner) that will need to be defined in more detail to allow existing Operations Systems (OSs) and SONET EMs to work together to manage SONET networks.

This GR is intended to solicit industry input on the topic and direction of SONET Element Manager operations applications.