1-8 Understanding the PCM30 line drawer
297-2101-504 Standard 02.01 December 1991
How the peripheral modules are configured
The PLD resides either in an LCM at the host site, or in a PRLCM at a
remote site. A brief description of each module is provided in the following
pages.
For more detailed information on the LCM or the PRLCM, refer to the
Peripheral Modules Manual, 297-1001-103.
The LCM (NT6X04AB) is a peripheral module that provides low-level
functions, for example, line scanning and ringing. It contains two line
concentrating array shelves (NT6X0401), and each shelf consists of the
following components:
•
one power converter card (NT6X53AA)
•
one LCM processor card (NT6X51AB)
•
one digroup control card (NT6X52AA or NT6X52AB
of release 6 or greater)
•
five line drawers, either standard (NT6X05AB) or PCM30 (NT6X05CA)
Note: Verify that the printed circuit board (PCB) for the digroup control card is
version 6 or greater.
Figure 1-5 illustrates a single line concentrating array. The PLD is located
in the same position as the standard line drawer, that is, in positions 0 to 4
on each line concentrating array.
