Carrier Access Access Navigator Manual De Usuario

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.

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).

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.