Chapter 21 Replacing a main unit 179
Installation and Maintenance Guide
Chapter 21
Replacing a main unit
Three types of main units are available: the Avaya Business Communications Manager 50 (Avaya
BCM50), the Avaya BCM50a, and the BCM50e. This chapter describes the procedure for
replacing a main unit.
The figure Overview of replacing a main unit on page 180 shows an overview of replacing a main
unit.
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