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Chapter 1 Product Overview
Communication Channels
1-4
Cisco Metro 1500 Series Hardware Installation Guide
78-10588-03
Primary and Extension Chassis
The Cisco Metro 1500 series system has a modular structure so you can expand
the system while it is in use. Adding or removing channels does not affect the
other working channels. Figure 1-2 shows a typical Cisco Metro 1500 series
system configuration containing a primary chassis and three extension chassis.