Single-Cabinetized Rsc-M Configuration - Nortel DMS 100 Series Maintenance Manual

3-2 RSC-M hardware
peripheral modules (XPM), line concentrating modules (LCM), and PCM30
line drawers (PLD) selections. The advantages provided are as follows:
•
•
•
The CPM cabinet design includes an enhanced cabinet and MSP. The CPM
cabinet design also includes improvements in the cooling unit (CU) and
system cabling. These improvements improve integration of remote cabinets
with current frame-based equipment.
This design addresses cabinet issues, cooling issues, MSP issues, and cabling
issues. Most circuit pack-level rules in provisioning do not change. A
top-mounted remote power filter unit vertically powers the cabinet.
Single-cabinetized RSC-M configuration
The single-cabinetized RSC-M configuration provides facilities to support a
maximum of 114 PCM30 links with the following functional units:
•
•
•
•
297-8223-550 Standard 04.02 November 2000
reduced footprint because a single cabinet supports up to 120 peripheral
side (P-side) PCM30 links
enhanced generic platform for future applications
increased P-side port capacity
The MSP (NTRX40) provides alarm monitor and control functions for
C28 cabinets. Each module provides specified functions. Each -48 Vdc
distribution can contain a maximum of ten breaker modules. Each module
contains two breakers. A maximum of eight fuse modules protects
subcircuits. Each fuse module has eight breakers. There can be a total of
13 fuse and breaker modules.
The enhanced CU (NTRX91) is a 10 in. deep forced air unit that uses 3
Rotron-type tube axial fans. The diameter of the tubes is 6 in. These fans
provide a total of 200 cfm at 3 in. of back pressure. These fans dissipate
1600 W evenly.
Note: The NTRX91 uses the current A0346832 air filter. This filter is
an 80% dust arrestance synthetic fiber material filter.
Can contain up to three RCO2 main shelves. Each shelf can control 22
PCM30 links to appropriate access nodes. Each shelf can have a maximum
of 16 PCM30 links to the host peripheral. Links 22 and 23 are not available
for CAS.
one extension shelf divided into two half-shelves. Each half provides an
additional 24 PCM30 links.
Note: Each RCO2 main shelf can support one extension half-shelf.