The Optical Transport Manager for PDH provides topology and analysis for low-order SONET/SDH network elements. “PDH” is used to designate the low-order SONET/SDH domain manager because PDH traffic is handled as payload on low-order SONET/SDH network elements. For these network elements, Optical Transport Manager supports a point-to-point network configuration, providing root-cause analysis, impact analysis, and impact notification.