Circuit Attributes: VT Tunnel


(ONS 15310-CL, ONS 15327, and ONS 15454 only) Use the Circuit Attributes page to provision basic circuit parameters. The following table describes the Circuit Attributes page fields and buttons that appear for virtual tributary (VT) tunnels.

Item

Description

Name

The circuit name. The name can be alphanumeric and up to 48 characters, (including spaces). Circuit names should be 44 characters or less if you want to preserve the ability to create monitor circuits. If you leave the field blank, CTC assigns a default name to the circuit.

Type

(Display only) Displays the type chosen in the Creation page.

Size

(Display only) STS-1.

Bidirectional

(Display only) Checked is the default for a VT tunnel.

State

Lists the administrative states. An administrative state puts the circuit cross-connects into the related service state if network conditions allow:

  • OOS,DSBLD-Puts the circuit cross-connects in the Out-of-Service and Management, Disabled (OOS-MA,DSBLD) service state. Traffic is not passed on the circuit.

  • IS-Puts the circuit cross-connects in the In-Service, Normal (IS-NR) service state.

  • IS,AINS-Puts the circuit cross-connects in the Out-of-Service and Autonomous, Automatic In-Service (OOS-AU,AINS) service state. Alarms and conditions are suppressed. When the connections receive a valid signal, the service state automatically changes to IS-NR.

  • OOS,MT-Puts the circuit cross-connects in the Out-of-Service and Management, Maintenance (OOS-MA,MT) service state. The OOS-MA,MT service state does not interrupt traffic flow; it suppresses alarms and conditions and allows loopbacks to be performed on the circuit. Use the OOS,MT administrative state for circuit testing or to suppress circuit alarms temporarily. Change the administrative state to IS; IS,AINS; or OOS,DSBLD when testing is complete.

Back

Displays the Circuit Creation page.

Next

Displays the Circuit Source page.

Cancel

Cancels circuit creation.

Help

Displays context-sensitive help.