Nortel Networks BCM 1000 用户手册

Chapter 2 Documentation updates for BCM 4.0

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Remove the DS256 cables from the front of the BCM main unit and, if present, the expansion 
unit. This includes the data connections on the MSC.

Mark the cables to ensure correct reconnection. 

Turn off the power switch located at the back of the BCM main unit and expansion unit.

Disconnect the BCM main unit and expansion unit power cords from the AC outlet.

Ensure you have room to access the part you are working on. Remove the BCM main unit 
from the rack, if necessary.

This section should be removed. The initial system configuration will be done after the rest of the 
equipment is installed.

This section should be removed. The keycode feature is discussed in another section of the 
addendum.

The Note on page 144 should be modified as follows. 

Warning: Remove all of the connections to the BCM system before you power down the 
system.

Failure to disconnect lines before you power down the system can cause damage to the 
system.

Warning: You must disconnect power from the main unit after you have performed an 
Element Manager shutdown. The main unit cannot start operating again until after power 
has been disconnected and then reconnected.

Note: The following table is based on a system with three-digit DNs, with a start 
DN of 221. If your system has longer DNs, the system automatically adds a repeat 
of the first digit for each additional DN length unit. i.e. 221 becomes 2221. Also, 
note on the tables below that DN numbering differs between systems that were 
upgraded from BCM 2.5 software and systems that were new with BCM 3.0 or 
newer software.