Caution – Carrier Access Access Navigator User Manual
Page 429
Access Navigator - Release 1.8
August 2003
16-31
Maintenance
Procedures
Install SIMM on Controller Card
CAUTION!
S
ERVICE
DISRUPTIONS
WILL
OCCUR
IF
THE
ACTIVE
C
ONTROLLER
CARD
IS
REMOVED
WITHOUT
AN
OPERATIONAL
STANDBY
C
ONTROLLER
. T
O
AVOID
SERVICE
DISRUPTIONS
,
ALWAYS
REMOVE
THE
STANDBY
C
ONTROLLER
FIRST
. I
N
A
PROTECTED
SYSTEM
WITH
TWO
C
ONTROLLER
CARDS
,
THE
ACTIVE
C
ONTROLLER
SHOULD
BE
SWITCHED
TO
STANDBY
MODE
BEFORE
REMOVING
. I
N
AN
UNPROTECTED
SYSTEM
WITH
ONLY
ONE
C
ONTROLLER
CARD
, SIMM
INSTALLATION
WILL
DISRUPT
SERVICE
BUT
WILL
NOT
AFFECT
STORED
PROVISIONING
DATA
.
T
O
AVOID
SERVICE
DISRUPTIONS
,
ALWAYS
INSTALL
THE
SIMM
ON
THE
C
ONTROLLER
THAT
IS
IN
STANDBY
(
NOT
ACTIVE
). T
HEN
SWITCH
THE
UPGRADED
C
ONTROLLER
TO
ACTIVE
MODE
BEFORE
INSTALLING
SIMM
ON
OTHER
C
ONTROLLER
.
3. Visually verify which Controller card (A or B) is in standby (see Figure 16-3). The LED indicators
on the standby Controller should be as follows:
l
Standby CONTROLLER ACTIVE/STANDBY indicator is off.
l
Standby CONTROLLER POWER indicator lights green.
.
Figure 16-13. Location of Front Panel Controller Status LEDs
Controller ’A’ Indicators
Controller ’B’ Indicators
Active
Controller
Power