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Line cards 25
Figure 3
DS-30X loop data format
DS-30Y network loops extend between controller cards and superloop
network cards in the Common Equipment (CE). They function in a manner
similar to DS-30X loops. See Figure 5 "Digital line interface unit block
diagram" (page 29).
A DS-30Y loop carries the PCM timeslot traffic of a DS-30X loop. Four
DS-30Y network loops form a superloop with a capacity of 128 channels
(120 usable timeslots). See Communication Server 1000M and Meridian
1 Large System Planning and Engineering (NN43021-220) for more
information on superloops.
Card LAN link Maintenance communication is the exchange of control
and status data between IPE line or trunk cards and the Call Server by way
of the NT8D01 Controller card. Maintenance data is transported through
the card LAN link. This link is composed of two asynchronous serial buses
(called the Async card LAN link in Figure 2 "Typical IPE analog line card
architecture" (page 23)). The output bus is used by the system controller for
output of control data to the line card. The input bus is used by the system
controller for input of line card status data.
A card LAN link bus is common to all of the line/trunk card slots within an
IPE module. This bus is arranged in a master/slave configuration where the
controller card is the master and all other cards are slaves. The module
backplane provides each line/trunk card slot with a unique hardwired slot
address. This slot address enables a slave card to respond when addressed
by the controller card. The controller card communicates with only one
slave at a time.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.