Nortel Networks 1000 User Manual
Page 25
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
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
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
02.06
Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.