User's Manual

Table Of Contents
Installation 45
1 Route the external alarm input cables from the external equipment through the cable gland
on the CMA to the external alarm terminal block.
2 Using the details provided in Figure 2-32, connect the normally-open alarm inputs from the
external equipment to the external alarm plug.
3 Connect the alarm plug to the terminal block. Note the plug identifier and using Table 2-11
inform the OMC operator which alarm code corresponds to the external alarm that you have
just installed.
Figure 2-32 External Alarm Plug
Inputs from external alarms should be normally open. When the
external contacts close, the BTS sends an alarm to the OMC.
IW022302
Pin 1
(signal)
Pin 2
(ground)