User Manual

Understanding the Digital Module Kit
IP-RN 8000 Installation & Commissioning Guide 25
Understanding the 1xDOM module
The 1xDOM (1xEV Data Only Modem) processes packets between the backhaul network and the 1xEV-DO
baseband interfaces. See Figure 13
and Table 14.
The 1xDOM uses Qualcomm technology and features FLM (Forward Link Module) and RLM (Reverse
Link Module) processors. The 1xDOM receives timing synchronization from the TFU and the BIO/SC.
The primary 1xDOM installs in slot 4. The optional redundant 1xDOM installs in slot 8.
The 1xDOM is field-replaceable and hot swappable. Hot swapping a 1xDOM is service disrupting if it is the
active 1xDOM in a redundant configuration. Therefore switching service to the standby 1xDOM in
redundant systems before replacing the module is recommended.
For information about installing the 1xDOM module:
• See Understanding the installation process
on page 40.
• See Understanding the module installation process
on page 104.
Figure 13 1xDOM module
txDOM
1xDOM
Power
Alarm
Standby
Active
FLM craft/serial port
slot 4 (primary) & slot 8 (redundant)
Top latch
LEDs
RLM craft/serial port
Bottom latch
Captive screw
Captive screw
FLM reset button
RLM reset button