Software Description - Nortel DMS-100 Series Maintenance Manual

MSP equipment shelf layout
Slot Abbreviation
01–02 Talk battery
03–04 Talk battery
05–06 Alarm
07–09 Fuse
10 CB
11 CB
12 CB
13 CB
14 CB
15 –
16–19 –
20 FAM

Software description

The following paragraphs describe the software operation of the Remote
Line Concentrating Module feature package NTX146AA. This package
provides the base software for the OPAC.
Interface to DS-1 links
The OPAC connects to the host controller through DS-1 links. The LCCs
assign data again. This data is data carried over the 32 channels of a DS30A
link to 24 channels of a corresponding DS-1 link. The system uses six
additional channels for intraswitching, where installed and signaling.
LCC control data
When a unit of the OPAC must be INSV, the LCC for that unit receives
control data from the LCM. This data indicates the number of DS-1 cards
equipped and which clock source to use.
The LCM receives this data from the host LTC/LGC. The host sends
messages to the LCM unit
NT PEC
NTRX44AA
NTRX44AA
NTRX41AA
NTRX43AA
NTRX42EA
NTRX42EA
NTRX42AA
NTRX42AA
NTRX42EA
P0734476
NTRX66AA
during the return to service (RTS) of the host
when the computing module (CM) attempts to switch the LCM clock
source from one LCC to the other
DMS-100 Family OPAC Maintenance Manual XPM12 and up
Maintenance overview 1-31
Remarks
Talk battery filter
Talk battery filter
Alarm module
Fuse module
Circuit breaker module
Circuit breaker module
Circuit breaker module
Circuit breaker module
Circuit breaker module
Filler panel
Provisionable
Fan alarm module