User's Guide

Nortel Networks Confidential
64
UMT/DCL/DD/0002
411--8111--905
Preliminary 01.06/EN october 2001
UMTS01
Figure 36
TMA block diagram
Protection
Data and RF lightning protection is performed at the iBTS connectors.
Protecting cups provide the TMA connectors with mechanical and environmental protection.
The DDMs monitor TMA alarms and report them to the digital shelf through I
2
C connection.