Understanding the PCM30 line drawer 1-5
PCM30 Line Drawer
Maintenance Guide BCS33 and up
System configuration
The PLD fits into the DMS-100 peripheral architecture in the same way as
the standard line drawer. The PLD is an integral part of the host LCM or the
PRLCM and provides two PCM30 links, each link carrying a maximum of
30 digital exchange lines to the customer terminating equipment.
A maximum of ten drawers, in any combination of PLDs and standard line
drawers, resides in a host LCM or a PRLCM. A host LCM equipped with
ten PLDs allows the connection of up to 600 (20 by 30) subscriber lines.
The host LCM then connects to the PCM30 line group controller (PLGC)
through DS30A links (a maximum of six links). The PRLCM connects to
the PLGC through PCM30 links.
Each PLGC supports a maximum of ten host LCMs or seven PRLCMs. The
PLGC, in turn, connects to the network module (NM) by a maximum of 16
DS30 links.
Figure 1-3xxx
PLD and DMS configuration
NM
PLGC
SLD
LCM/PRLCM
PLD
LCM/PRLCM
A maximum of 16 network modules
A maximum of 16 DS30 links
A maximum of 20 ports on PLGC for
DS30A links or PCM30 links
A maximum of 10 host LCMs
or 7 PRLCMs per PLGC
A maximum of 60
digital exchange lines
per PLD
A maximum of 64
analog
lines per SLD
A maximum of 10 PLDs or
SLDs per LCM/PRLCM
A maximum of 6 DS30A links
per LCM or PCM30 links per
PRLCM
