Nortel Networks COMMUNICATION SERVER 1000 NN43021-110 - Manual (Page 39)

Hardware architecture 39
The System Utility card supports Card ID. The card provides an interface
between the security device and the computer, and an interface between
the XSM and display panel for each Core/Net card cage. This card also
includes a switch on the faceplate to enable or disable the Core cards.
The System Utility Transition card provides connections for the security
device, the system monitor, and the status panel. This Transition card
is mounted on the rear of the backplane (back side) directly behind the
System Utility card.
The cCNI Transition cards provide the cable connections to the 3PE
Termination Panel at the back of the module. A cCNI Transition card
is mounted directly behind each cCNI card (on the back of the Core
backplane). Four cCNI Transition cards for Core/Net module are installed
in the factory regardless of how many cCNI main cards are configured for
the system.
Network interface
Network switching, based on digital multiplexed loops, interconnects
peripheral ports. A loop transmits voice, data, and signaling information
over a bidirectional path between the network and peripheral ports.
Network cards digitally transmit voice and data signals, using space
switching and Time Division Multiplexing (TDM) technology. Network
switching also requires service loops (such as conference and TDS loops),
which provide call progress tones and outpulsing.
The following cards provide basic network switching control:
•
The NT8D04 Superloop Network card provides switching for four loops
grouped together in an entity called a superloop.
•
The NT5D12 Digital Trunk card provides switching for two DTI/PRI
loops and takes one network slot.
• The NT5D97 Digital Trunk card provides switching for two DTI2/PRI2
loops and takes one network slot.
The NT5D12 and NT5D97 Digital Trunk cards replace the functionality of
the QPC720 DTI/PRI and QPC414 Network card, which provided switching
for two loops.
Nortel Communication Server 1000
Communication Server 1000M and Meridian 1 Large System Overview
NN43021-110 02.05 Standard
30 September 2008
Copyright © 2003-2008 Nortel Networks
.