Cisco ONS 15454 Series Procedure Manual page 322

NTP-A254 Downgrade a DS3-12E/DS3NE Card to a DS3-12/DS3N-12 Card
Note
Step 15 Repeat Steps
Stop. You have completed this procedure.
NTP-A254 Downgrade a DS3-12E/DS3NE Card to a
DS3-12/DS3N-12 Card
Purpose
Tools
Prerequisite Procedures
Required/As Needed
Onsite/Remote
Security Level
All ports must be provisioned as UNFRAMED and have Path Trace disabled.
Note
Working cards must be downgraded before protect cards.
Note
Cisco ONS 15454 Procedure Guide, R5.0
12-10
If you have upgraded to a DS3XM-12 or DS3/EC1-48 card and are using 734A cables with UBIC
electrical interface adapters (EIAs), you must set the line build out (LBO) parameter for Ports
13 to 48, doing so according to the actual distance (in feet) from the DSX panel. If you
incorrectly set the LBO for these cards and ports, the terminal loopback might not work on Ports
14 and 17 on cards installed in Slots 1 or 17.
If you are using 735A cables, you must set the LBO parameter for Ports 13 to 48, doing so
according to the following conventions:
Actual distance from the DSX panel is less than 110 feet (33.53 m):
LBO setting is " 0 - 225."If you incorrectly set the LBO for these cards and ports, the terminal
loopback might not work on Ports 14 and 17 on cards installed in Slots 1 or 17 with unterminated
cable pairs.
Actual distance from the DSX panel is greater than or equal to 110 feet (33.53 m):
LBO setting is "226 to 450." However, the terminal loopback might not work on Ports 14 and
17 on cards installed in Slots 1 or 17 when used in this configuration with unterminated cable
pairs. If the terminal loopback does not function, create a physical loopback at the DSX panel.
4 through 14 for any other low-density cards you want to upgrade to high-density cards.
This task downgrades a DS3-12E or DS3NE card. Downgrading can be
performed to back out of an upgrade.The procedure for downgrading is
the same as upgrading except you choose DS3-12 or DS3N-12 from the
Change Card drop-down list.
None
NTP-A17 Install the Electrical Cards, page 2-8
As needed
Onsite
Provisioning or higher
Chapter 12 Upgrade Cards and Spans
January 2005