User's Manual Chapter 13

Chapter 6: Internal Photographs
AT&T Wireless Services
6-69
FCC Type Acceptance Application
10991 Rev. 1.0 7/6/99
Figure 6.29 identifies the bottom side of the transceiver shelf Digital
Interface (DIF) unit. The TRS-DIF unit performs the following
functions: a link module supports a link to and from the baseband shelf
for the digital baseband data, a clock and synchronization module for
processing the digital baseband data, a signal processing module, and a
Central OAM Controller for all other transceiver shelf units.
Figure 6.29—DIF Card Bottom View