Cisco 3825 Hardware Installation Guide - Page 206

Subscriber-Unit System Chapter 15 Connecting Wireless Multipoint Network Modules Figure 15-2 Multipoint Communications with Multipath and Diversity Reception The network module provides the control and data interface to the radio frequency (RF) subsystem in the wireless transverter. It also provides the up-down conversion from baseband to intermediate frequency (IF). One network module supports one or two wireless transverters (main and diversity). Subscriber-Unit System Each subscriber unit system (see Figure 15-3) consists of the necessary cables and these items: • A wireless multipoint network module in the router • One or two antennas to transmit and receive RF signals to and from the headend. (Diversity reception of headend transmissions requires two antennas.) • One wireless transverter for each antenna. The transverter can be attached to the back of the subscriber antenna, as shown in Figure 15-3, or mounted separately. • One power injector for each transverter. The power injector connects the network module to the wireless transverter, and provides the transverter with DC power, control signals, and IF signals. 15-2 Cisco Network Modules Hardware Installation Guide OL-2485-20