User Manual

ADCP-75-159 • Issue 1 • August 2003 • Section 1: Overview
Page 1-4
© 2003, ADC Telecommunications, Inc.
Figure 1-3. EBTS/HU Interface With Primary Interface Panel and Expansion Panels
2.3 Handset Interface
The RU interfaces with the handsets (cell phones) through an antenna (not provided) which
transmits and receives the handset RF signals. In the reverse path, the RU receives RF signals
from each handset. The RU digitizes the RF signals and then converts them to digital optical
signals for transport to the HU over the fiber optic link. In the forward path, the RU receives
digital optical signals from the HU. The RU converts the optical signals to RF signals for
transmission to the handsets.
18821-A
HOST UNIT
3 x 1
3 x 1
ENHAN. BASE
TRANSCEIVER
STATIONS
ENHAN. BASE
TRANSCEIVER
STATIONS
RF
RF
RF
FILTER
FILTER
3 x 1
3 x 1
3 x 1
ENHAN. BASE
TRANSCEIVER
STATIONS
ENHAN. BASE
TRANSCEIVER
STATIONS
RF
RF
RF
RF
EXPANSION
PANEL
3 x 1
ENHAN. BASE
TRANSCEIVER
STATIONS
PRIMARY
INTERFACE
PANEL
RF
RF
ENHAN. BASE
TRANSCEIVER
STATIONS
RF
EXPANSION
PANEL