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 synchronous transport signal (STS) circuit.

  • VT: Creates a virtual tributary (VT1.5) circuit. (ONS 15600 nodes do not support VT circuits.)

  • VT Tunnel: Creates a VT tunnel. VT tunnels allow VT1.5 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. (ONS 15600 nodes cannot be the source or destination node for VT Tunnel circuits.)

  • 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 VT1.5s 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 a bidirectional line switched ring (BLSR), 1+1, or unprotected nodes, but cannot be created on unidirectional path switched ring (UPSR) nodes.

  • STS-V: (ONS 15310-CL and ONS 15454 only) Creates a virtual concatenated (VCAT) STS circuit.

  • VT-V: (ONS 15310-CL and ONS 15454 only) Creates a virtual concatenated VT circuit.

  • OCHNC: (ONS 15454 only) Creates an optical channel network connection (OCHNC) between ONS nodes that are provisioned for dense wavelength division multiplexing (DWDM).

Num. of Circuits

Sets the number of circuits to be created (STS, VT, and VT tunnel circuits only).

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.