SONET/SDH 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 SONET/SDH
	Card	Equipment and Card are interchangeable terms. These are physical subsystems that plug into OpticalNetworkElements and support one or more PTPs.
	Equipment
Ports	PTP	Physical Termination Point. End point of a physical connection.
Physical Connections	TopologicalLink	A physical connection, such as a fiber link, that connects to another device managed by the Optical Transport Manager.
	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.
	Conduit	Conduit is an aggregated physical connection consisting of multiple links between a pair of devices managed by Optical Transport Manager.
Abstract Entities	BBTopologicalLink	An unmanaged segment in the between managed entities. May consist of one or more physical or logical devices.
	BBDropSideTopologicalLink	An unmanaged segment on the edge of the managed entities. May consist of one or more physical or logical devices.
Logical Ports	CTP	Connection Termination Point. End point of a logical connection.
Logical Connections	LogicalConnection	A logical connection that crosses part of a subnetwork such as a protection group.
	SubNetworkConnection	A logical connection that crosses a subnetwork.
	MeshSubnetworkConnection	A logical connection that crosses a subnetwork that is in a mesh configuration.
	HighOrder_Trail	A logical connection across a network that may cross one or more subnetworks.
	HighOrder_Circuit	An end-to-end connection across a network that may cross several subnetworks. This entity is used to represent client services.
Protection	TopologicalLinkGroup	A group of TopologicalLinks that form some larger entity such as a ring.
	ConnectionProtectionGroup	A group of TopologicalLinks or TopologicalLinkGroups that provide protection for subnetwork connections that cross the protection group. For example, 2F-BLSR ring configuration.
	RingProtectionGroup	A group of TopologicalLinks that form 4F-BLSR/4F-MS-SPRing protection configuration
	LogicalConnectionTPGroup	A group of CTPs that form UPSR/SNCP protection configuration.
	CardProtectionGroup	A group of Cards (or Equipment) where one or more cards backs up a main card.