Circuit Attributes: VT Tunnel
(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 VT tunnels.
 
Item
Description
Name
Sets 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 circuit 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 OOS-MA,DSBLD service state. Traffic is not passed on the circuit.
 •
IS—Puts the circuit cross-connects in the IS-NR service state.
 •
IS,AINS—Puts the circuit cross-connects in the 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 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.
For additional state information, see States.
Back
Displays the Circuit Creation page.
Next
Displays the Circuit Source page.
Cancel
Cancels circuit creation.
Help
Displays context-sensitive help.

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