The SONET State Dictionary Visuals

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The SONET state dictionary includes six primary states and six secondary states. Elements of this state dictionary were introduced in Link States: the SONET State Dictionary.

Table A.12 illustrates the graphical representation of the SONET primary states. Table A.13 describes the graphical representations of the common double SONET states.

In these tables, the symbolic name "Link State Symbol" that appears after each primary state name corresponds to the last part of the variable name holding the state. For example, the "ActiveProtecting" state, which has ActiveProtecting for symbol, has the variable IltSONET.State.ActiveProtecting associated with it in the library.

Link State    Link State Symbol	Link Base
Disabled    Disabled
Inactive    Inactive
Active    Active
Active and protecting    ActiveProtecting
Troubled and protected    TroubledProtected
Troubled and unprotected    TroubledUnprotected

Link State    Link State Symbols	Link Base
Disabled in both directions    Disabled  Disabled
Disabled in one direction, active in the other direction    Disabled  Active
Inactive in both directions    Inactive  Inactive
Inactive in one direction, active in the other direction    Inactive  Active
Active in both directions    Active  Active
Troubled and protected in one direction, active in the other direction    TroubledProtected  Active
Active and protecting in both directions    ActiveProtecting  ActiveProtecting
Active and protecting in one direction, inactive in the other direction    ActiveProtecting  Inactive
Troubled and protected in both directions    TroubledProtected  TroubledProtected
Troubled and protected in one direction, inactive in the other direction    TroubledProtected  Inactive
Troubled and protected in one direction, troubled and unprotected in the other direction    TroubledProtected  TroubledUnprotected
Troubled and unprotected in both directions    TroubledUnprotected  TroubledUnprotected
Troubled and unprotected in one direction, active in the other direction    TroubledUnprotected  Active

Table A.14 illustrates the graphical representation of the SONET secondary states, or protection switch request indicators. The indicators are always represented by icons that appear near the end of the link on which they are set.

In Table A.14, the symbolic name "Secondary State Definition" that appears after each "Secondary State Name" corresponds to the static secondary state definition. For example, the "Manual Switch" secondary state is defined by ManualSwitch, which corresponds to the static definition IltSONET.Protection.ManualSwitch.

It is possible to change the icon associated with a secondary state by using global settings, see Using Global Settings in the Styling documentation. The icon property name to be used with IltSettings.SetValue() must only include the secondary state definition. For example:

• SONET.Protection.ManualSwitch.Icon
where:
• ManualSwitch is the secondary state definition of the "Manual Switch" state

For more information on how to use global settings to modify the SONET secondary state icons, see Customizing the SONET State System in the Styling documentation.

Secondary State Name    Secondary State Definition	Icon	Comment
Exercisor    Exercisor		Facility is currently undergoing test.
Forced switch    ForcedSwitch		Forced protection switch request has been triggered.
Locked    Locked		No traffic is allowed on the facility. This restriction may be imposed for maintenance reasons.
Manual switch    ManualSwitch		Manual protection switch request has been triggered.
Pending    Pending		Pending protection switch request.
Wait-to-restore    WaitToRestore		Waiting for the facility service to be restored.