Use the Loopback (or Loopback > Port, or DS1/DS3/EC) subtab to initiate terminal or facility
loopbacks. For a list of ONS nodes and cards that support this subtab, see
Maintenance.
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Displays the port number.
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Sets the port administration state. Choose an administrative state from the drop-down list and click Apply to change the port service state unless network conditions prevent the change. Admin states include:
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IS —Puts the port in service. The port service state changes to IS-NR. |
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OOS,DSBLD —Removes the port from service and disables it. The port service state changes to OOS-MA,DSBLD. |
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OOS,MT —Removes the port from service for maintenance. The port service state changes to OOS-MA,MT. For loopbacks, the OOS,MT admin state must be initiated. |
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IS,AINS —Puts the port in automatic in-service. The port service state changes to OOS-AU,AINS. |
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CTC will not allow you to change a port service state from IS-NR to OOS-MA,DSBLD. You must first change a port to the OOS-MA,MT service state before putting it in the OOS-MA,DSBLD service state. |
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Displays the autonomously generated state that gives the overall condition of the port. Service states appear in the format: Primary State-Primary State Qualifier, Secondary State. For additional state information, see States.
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Provisions a terminal or facility loopback, or clears an existing current loopback (none). Loopbacks can be provisioned when the service state is in OOS-MA,MT state.
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The ONS 15600 OC-192 card supports only payload loopbacks, the ONS 15600 OC-48 card supports only facility loopbacks, and the ASAP ports support both facility and terminal loopbacks. |
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For DS1 (DS1/E1-56 and DS3XM-12) only, when a far end line loopback command is received, the field displays “FE Facility (Line)”. |
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(Does not apply to all cards) Allows you to specify the loopback type for DS-1 and DS-3 far end node. The options are:
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Feac Loopback —far end alarm and control loopback; sets the DS-3 signal for loopback. |
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Payload Loopback —Sets the DS1 payload for loopback. |
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Line Loopback —Sets the full DS1 signal for loopback. |
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Send AIS on Facility Loopback
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(Does not apply to all cards) When checked, sends an alarm indication signal when there is a facility loopback.
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Send AIS on Terminal Loopback
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(Does not apply to all cards) When checked, sends an alarm indication signal when there is a terminal loopback.
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(Does not apply to all cards) When checked, inhibits far end loopback.
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When checked, the smartjack loopcodes, that is, backplane loopcodes, are not detected.
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Applies changes made to the fields in the tab.
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Cancels any changes to the tab and returns the fields to their last-saved settings.
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Displays context-sensitive help.
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