Cisco ONS 15454 SDH Specifications Page 211

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4-13
Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 4 Maintenance
Card Replacement
In a 1+1 protection scheme, place a lockout on the protect card and verify that traffic is traveling
over the working span before setting the lockout.
Procedure: Replace an In-Service STM-N Card
Caution Hazardous voltage or energy may be present on the backplane when the system is operating. Use
caution when servicing.
Step 1 In the CTC software, determine which STM-N card is active.
Note You can determine whether the card is in active mode or standby mode by viewing it in the
CTC software and positioning the cursor over the card graphic to display the status.
Step 2 Switch the active STM-N card to standby:
a. In the node view, select the Maintenance > STM Cards tabs.
b. From the Cross Connect Cards menu, choose Switch.
c. Click Yes on the Confirm Switch dialog box.
Note After the working STM-N card goes into protection, the protection slot becomes working. This
causes the former working card ACT LED to switch off.
Step 3 Pull the protection STM-N card from the ONS 15454 SDH.
Step 4 Insert the replacement STM-N card into the empty slot. The replacement card boots up and becomes
ready for service after approximately one minute. After this procedure the card is ready for protection
function.
Procedure: Reset an Electrical Card (E1-N-14, DS3i-N-12, or E3-12)
Purpose Replacing an in-service STM-N card
Tools/Equipment
Prerequisite procedures
Required/As Needed As needed
On Site/Remote On Site
Purpose Resetting an electrical card
Tools/Equipment
Prerequisite procedures
Required/As Needed As needed
On Site/Remote On Site
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