Circuits on Span
Use the Circuits on Span dialog box to view circuit span usage information and, for SNCP spans, to perform span switches and lockouts.
 
Item
Description
VC4
Shows the specific VC4 number.
VC3/TUG3
Shows the specific VC3/TUG3 number.
TUG2
Shows the specific TUG2 number.
VC11
Shows the specific VC11 number.
VC12
Shows the specific VC12 number.
SNCP
(SNCP circuits only) If the high-order path and low-order path are protected by an SNCP, a check appears in the SNCP column.
Circuit
Shows the circuit name that uses the high-order path and low-order path. If the high-order path and low-order path are not used by a circuit, “unused” is displayed. For VCAT circuits, the name of the VCAT circuit is shown with the member circuit name in brackets.
Switch State
(SNCP circuits only) Shows the switch state of the circuit span. Valid values are:
CLEAR: No SNCP switch is active.
MANUAL: A Manual switch is active on the span.
FORCE: A Force switch is active on the span.
LOCKOUT_OF_PROTECTION: A protection lockout is active on the span; traffic cannot be switched to it.
Perform SNCP span switching
(SNCP circuits only) Allows you to initiate a span switch. Valid entries are:
CLEAR: Clears any SNCP switches that are active on the span.
MANUAL: Initiates a Manual switch on the span.
FORCE: Initiates a Force switch on the span.
LOCKOUT_OF_PROTECTION: Initiates a protection lockout on the span; traffic cannot be switched to it.
Apply
Applies the switch or lockout.
Help
Displays CTC context-sensitive help.

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