Telephone System Installation and Maintenance Guide

Chapter 21 Replacing a main unit 173
BCM50 Installation and Maintenance Guide
Chapter 21
Replacing a main unit
There are three types of main units available: the BCM50, the BCM50a, and the BCM50e. This
chapter describes the procedure for replacing a main unit.
Figure 65 shows an overview of replacing a main unit.
Figure 65 Overview of replacing a main unit