Esa Hardware Representation - Nortel DMS-100 Series Maintenance Manual

ESA feature package, the PRLCM emulates the call processing functions of
the LTC and the central control (CC).

ESA hardware representation

An illustration of the ESA hardware configuration, from the viewpoint of the
MAP terminal, is shown in the following figure. This illustration shows the
PRLCM as a C-side node to both the ESA processor and the remote
maintenance module (RMM). In this case, the PRLCM is not in the ESA
mode.
When the PRLCM goes into ESA mode, the illustration in the figure below is
no longer accurate. In ESA mode, the ESA processor functionally takes the
role of the host peripheral module (PM), in this case, the LTC. This hardware
configuration is not seen from the viewpoint of the MAP terminal because the
PRLCM is functioning independently of the host.
In the following figure, links 0 and 1 to the RMM are DS30A links supporting
30 channels each. Links 2 and 3 to the ESA processor are single-channel
message links.
Figure 3-6 PRLCM ESA hardware representation
0
0
0
RMM
1 2
Unit 0 Unit 1
2 1
Unit 0 Unit 1
2 1
DMS-100 Family OPM Maintenance Manual XPM14 and up
3
(up to 32 DS30 links)
LTC
(up to 6 PCM30
3
links)
PRLCM
Message links
3
ESA
PRLCM overview 3-11