Loopback

Use the Loopback (or Loopback > Port) subtab to initiate terminal or facility loopbacks.

Port

Displays the port number.

Admin State

Displays the port administration state. Choosing an administrative state from the drop-down list and clicking Apply changes the port's service state unless network conditions prevent the change. Admin states include:

  • unlocked-Puts the port in service. The port service state changes to unlocked-enabled.

  • locked,disabled-Removes the port from service and disables it. The port service state changes to unlocked-enabled,disabled.

  • locked,maintenance-Removes the port from service for maintenance. The port service state changes to unlocked-enabled,maintenance. For loopbacks, the locked,maintenance admin state must be initiated.

  • unlocked,automaticInService-Puts the port in automatic in-service. The port service state changes to unlocked-disabled,automaticInService.

Service State

An autonomously generated state that gives the overall condition of the port. Service states appear in the format: Administrative_State-Operational_State, Status_Attribute. For additional state information, see States.

Loopback Type

Allows you to provision a terminal or facility loopback, or clear an existing current loopback (none). Loopbacks can only be provisioned when the service state is unlocked-enabled,maintenance.

Send AIS on Facility Loopback

(Does not apply to all cards) When checked, sends an alarm indication signal when a facility loopback occurs.

Send AIS on Terminal Loopback

(Does not apply to all cards) When checked, sends an alarm indication signal when a terminal loopback occurs.

Inhibit FE Lbk

(Does not apply to all cards) When checked, inhibits far-end loopback.

Apply

Applies changes made to the fields in the tab.

Reset

Cancels any changes to the tab and returns the fields to their last-saved settings.

Help

Displays context-sensitive help.