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Access Navigator - Release 1.8 August 2003 16-3
Maintenance Procedures
Replace Controller Card
Replace Controller Card
Procedure Summary
n Overview ... 16-3
n Precautions ... 16-4
n Tools and Materials Required ... 16-4
n Verify Equipment Status ... 16-5
n Determine Which Replacement Procedure to Use ... 16-5
n Replace Protected Controller Card ... 16-6
n Replace Unprotected Controller Card ... 16-13
Overview
This procedure applies to an Access Navigator with one or two Controller cards. The Access Navigator
can hold two (redundant) Controller cards for time-slot interchange. In a redundant system, the standby
Controller can be replaced without disrupting service. Then, by using a CLI command to switch the
active Controller to standby, the other Controller can be replaced. In an Access Navigator with only one
Controller card, the Controller can be replaced without disrupting service if the new Controller is
installed before removing the old Controller.
Incompatible Software – This procedure contains Cautions to prevent accidental installation of
Controller cards with incompatible software, which could disrupt service and alter provisioning
settings. These cautions can be ignored if the final installation provides two Controller cards with
identical or compatible software.
Alarm and Log Events – During the replacement process, if two Controller cards are installed with
incompatible software, the Access Navigator will produce a minor alarm and the event log will contain
an entry stating that one of the Controllers is Incompatible. This message is normal and can be ignored
if the final installation provides two Controller cards with identical or compatible software.