User Manual

Chapter 1 l ipBTS system overview
ipBTS RN chassis functions
1-4 910136 Rev01.00 Standard July 2007
ipBTS RN chassis functions
The ipBTS chassis (or enclosure) is a rack mount with built-in redundant cooling fan trays. Air
inlets are located on the front of the chassis and air outlets are located on the rear of the chassis.
The ipBTS C30 chassis provides power and interconnections for the radio modules and ADCC
modules
ipBTS RN chassis components
The RN shelf chassis, installed in the communications rack, is capable of supporting the field
replaceable modules shown in Table 1-1.
Replaceable RN modules
This section describes whether modules and other components are “field replaceable” or “hot-
swappable,” and whether replacing them involves a service disruption. See Table 1-2 for the
list of replaceable items in the ipBTS. We define the terms this way:
• “Field-replaceable” means the item can be replaced without returning the entire network
element to Airvana. Field-replaceable items may or may not be hot-swappable.
• “Hot-swappable” means the item can be replaced without powering down other modules
or the rack as a whole. Hot swappable items may or may not cause service disruption
when swapped out.
• “Service disrupting” means replacing the item causes some break in the continuity of
service to at least some user sessions.
Table 1-1. RN shelf replaceable components
ipBTS C30 RN configuration Component Number Installed
three radio sectors fan trays two Either side of chassis
ADCC module one Top slot
Radio module one Bottom slot
air filter one Right side of the
chassis
Table 1-2. Replaceable RN modules
Module Option Part Number
Fan tray Field replaceable unit and not service disrupting 64075