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Types of cabinet
An AccessNode remote system is available in cabinets for the equipment
rooms of business buildings at a remote site. An equipment room is a common
space used for telecommunications equipment such as private branch
exchanges, mainframe computers, or video switches that are shared by the
occupants of a building.
A system consists of from one to two cabinets as follows:
•
•
A two-cabinet system is shown in Figure 2-5.
Master cabinet
A master cabinet consists of a stack of one battery equipment module (BEM),
one base equipment module, one pedestal and one dual equipment module
(DEM). For a description of the master cabinet equipment see "MBP master
cabinet configuration" on page 2-10.
The master cabinet converts a supply of 208/240 V ac to supplies of –48 V dc
for powering the equipment inside the master and expansion MBP cabinets.
One BEM contains a rectifier shelf and a breaker interface panel. The other
BEM provides space for back-up batteries.
The MBP master cabinet also provides access connections controlled by the
latest software release to copper-distribution shelves (CDS) for DS0 services
of up to 96 lines per CDS shelf. Up to two CDS shelves can be installed in the
master cabinet for a total of 192 DS0 lines.
Expansion cabinet
An expansion cabinet consists of a stack of one battery equipment module
(BEM), one pedestal and up to three single equipment modules (SEMs). For a
description of the expansion cabinet equipment see "MBP expansion cabinet
configuration" on page 2-12.
The expansion cabinet SEMs contain up to 5 CDS shelves (two per SEM) for
a maximum capacity of 480 DS0 lines. The BEM provides space for additional
back-up batteries.
Cabinet arrangement
In a line-up of cabinets, the order of the cabinets as viewed from the front of
the line-up is from left to right as follows: an MBP master cabinet and an MBP
expansion cabinet (see Figure 2-5).
AccessNode Modular Business Package VTBM Ring User Guide P0904244 Issue 1.0
master cabinet
expansion cabinet
Introduction to equipment and cabling configurations 2-7
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