Circuit Creation

---

Use the Circuit Creation page to set the circuit type that you will 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, ONS 15327, and ONS 15454 only) Creates a Virtual Tributary (VT1.5 or VT2) circuit. VT Tunnel: (ONS 15310-CL, ONS 15310-MA, ONS 15327, 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. OCH CC: (ONS 15454 only) Creates a circuit from TXP/MXP client ports.
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.