Carrier Access Access Navigator user manual Active/Standby Controller Status LEDs

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Active/Standby Controller Status LEDs

Active/Standby Controller Status LEDs

The Access Navigator may have one or two Controller cards, installed in the slots marked Controller A and Controller B. At least one Controller card is required. If there is only one Controller card, by default it will be the “active” card.

The Access Navigator can also be equipped as redundant, with two Controller cards. Either Controller card can be made active during setup. The other Controller card remains in a standby state, ready to take over in the event that the active Controller fails or is taken out of service. Both Controller cards keep identical data bases, so that either card can take over and maintain all existing call connections.

NOTE: One Controller card must always be active, indicated by a green Active status LED. If there are two Controller cards (protected system), one Controller will be active (Active status LED lights green) and one Controller will be in standby (Active status LED will be off).

Table 14-10. Active/Standby Controller Status LEDs

LED State	Description	Troubleshooting
Off	Controller card is in standby.	LED will be off if Controller card is in
		standby or is not operational. Use the
		status equipment command for
		additional information.
Green	Controller card is active.	Caution: Do not remove or replace an
		active Controller card if there are calls in
		progress. In an unprotected system (one
		Controller card), the system must be
		taken offline for service. In a redundant
		system, use the switch controller
		command to put the Controller card in
		standby before removing.

Access Navigator - Release 1.8 August 2003 14-17