Circuit Creation
Use the Circuit Creation page to set the circuit type for the circuit you create. The following table describes the Circuit Creation page fields and buttons.
 
Item
Description
Circuit Type
Defines the circuit type:
STS: Creates a specific STS circuit.
VT: (ONS 15310-CL, ONS 15310-MA, and ONS 15454 only) Creates a Virtual Tributary (VT1.5 or VT2) circuit.
VT Tunnel: (ONS 15310-CL, ONS 15310-MA, and ONS 15454 only) Creates a VT tunnel. VT tunnels allow VT circuits to pass through an ONS node without using cross-connect card resources. VT circuits using VT tunnels use cross-connect capacity only at the source and destination nodes.
VT Aggregation Point: Creates a VT aggregation point (VAP). VAPs allow VT circuits to be aggregated into an STS for hand-off to non-ONS networks or equipment, such as interoffice facilities (IOFs), switches, or a digital access cross-connect system (DACS). VAPs reduce VT matrix resource utilization at the node where the VT circuits are aggregated onto the STS. This node is called the STS grooming end. The STS grooming end requires an OC-N, EC-1, or DS3XM card. VT aggregation points can be created on BLSR, 1+1, or unprotected nodes, but cannot be created on UPSR nodes.
STS-V: (ONS 15310-CL, ONS 15310-MA, and ONS 15454 only) Creates a VCAT STS circuit.
VT-V: (ONS 15310-CL, ONS 15310-MA, and ONS 15454 only) Creates a virtual concatenated VT circuit.
OCHNC: (ONS 15454 only) Creates an OCHNC between ONS nodes that are provisioned for DWDM. Choose this option if you want to create an OCHNC or OCHNC DCN circuit.
OCHCC: (ONS 15454 only) Creates a circuit from TXP/MXP client ports; used to manage multi-ring and meshed topologies.
OCH TRAIL: (ONS 15454 only) Creates a circuit between optical trunk/client ports on DWDM nodes or between TXP/MXP trunk/client ports; used to manage multi-ring and meshed topologies.
Num. of Circuits
(STS, VT, and VT tunnel circuits only) Sets the number of circuits to be created.
Auto-ranged
Creates identical (same source and destination) sequential circuits automatically. The check box is automatically selected if you enter more than 1 in the Num. of circuits field. Unchecking the check box turns off autoranging.
Next
Displays the Circuit Attributes page.
Cancel
Cancels circuit creation.
Help
Displays context-sensitive help.

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