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© 2001-2009 Calix. All Rights Reserved.
About E5-121/MNLC RT-410 Retrofits
This document describes how to install a custom Calix E5-121 retrofit kit into a Motorola/
Next Level Communications (MNLC) RT-410 outdoor cabinet.
Overview
MNLC RT-410 cabinets are equipped with up to four native USAM shelves and are supplied
by remote power (line power). The Calix retrofit kit re-uses the existing USAM line power
input pairs, aggregating them to a new DC power system, which in turn supplies standard
-48 VDC power to the Calix E5-121 service unit(s).
The retrofit kit supports up to four E5-121 units, generally in a 1:1 relationship to the USAM
shelves, where you must remove a USAM shelf for each E5-121 unit you install. In cabinets
equipped with three or fewer USAM shelves, you can install the retrofit kit and one E5-121
unit without removing any native equipment. For cabinets equipped with the maximum four
USAM shelves, installing the retrofit kit requires removal of at least one USAM shelf.
The retrofit kit consists primarily of the DC power system and related cabling. The retrofit
kit does
not
include other components required for installation. These items are ordered and
packaged separately, but installed together with the kit:
Converter modules (±190 to -48 VDC)
Fan tray for DC converter shelf
Subscriber interface adapter cables, MS
2
to RJ-21 (CAT5, CAT3 options)
Calix E5-121 service unit(s)
Installing the retrofit kit will affect subscriber services (if present) on any
removed
USAM
equipment. Therefore, Calix recommends performing the installation during a standard
maintenance window.
Guidelines
Follow these general guidelines for retrofit kit installation:
The MNLC RT-410 retrofit kit supports up to (4) E5-121 service units (not included).
Expect to remove (1) USAM shelf for each Calix E5-121 unit to install.
Use the remote power calculator tool (available on the Calix Resource Center) to
determine your line powering requirements, including the number of required power
pairs and converter modules.
Use extreme caution when working with remote power. Never assume that power on the
input lines is off.
Installing the retrofit kit may be a service-affecting procedure. Perform installation during
a standard maintenance window.
