PDH object classes in Optical Transport Manager

Classes in the Optical Transport Manager object model lists the classes in the Optical Transport Manager object model that are visible in the Global Console when it connects to an instance of the Optical Transport Manager. Many of the terms used are derived from the TMF 814 object model.

Table 1. Classes in the Optical Transport Manager object model

Category	Class	Description
Physical Equipment	OpticalNetworkElement	Device supporting low-order SONET/SDH
	Card	Equipment and Card are interchangeable terms. These are physical subsystems that plug into OpticalNetworkElements and support one or more PTPs.
	Equipment
Port	PTP	Low-order Physical Termination Point
Physical Connections	DropSideTopologicalLink	A physical connection, such as a fiber link, that connects a device managed by the Optical Transport Manager to another device that is not managed by the Optical Transport Manager.
Logical Connections	CTP	Connection Termination Point. End point of a logical connection.
	HighOrder_Trail	A logical connection across a network that may cross several subnetworks.
	LowOrder_Circuit	An end-to-end connection across a network that may cross several subnetworks and includes CTPs. This entity is used to represent client services.