scope:

This standard provides uniform functions and requirements for performance monitoring (PM) and alarm/status monitoring for digital transmission signals at DS1 rate. It is intended to be used in conjunction with the core document T1.231-2003.

Purpose

This standard is written to provide the minimal set of requirements to provide for uniform and consistent performance monitoring and alarm/status monitoring for the DS1 digital transmission rate. This standard provides definitions for performance primitives (anomalies and defects), performance parameters, and performance failures.

Application

The application of this standard is as follows:

♦ It provides definitions of performance and alarm/status parameters, both required and optional, applicable to network elements providing non-intrusive transmission monitoring at the DS1 digital rate;

♦ It describes the functions related to the collection, storage, thresholding, and reporting of performance monitoring information; and

♦ It establishes the performance monitoring functions that may be used at network interfaces between telecommunication carriers, at network boundaries, and at customer premises to permit compatible maintenance operations.

Although this standard establishes ranges over which transmission performance can be measured, it does not establish any requirements or guidelines for levels of performance. This standard refers to other American National Standards that address digital transmission and performance criteria.