User guide
119
Digital Line Module (DLM) shelf
(NTP 555-4001-101, DLM Reference Manual)
6X51:
LCM Peripheral Processors: controls the activity of
the LCA and functions as the interface between the DS30A
links and the digroup controller; preforms sanity checks,
collects digits and messaging for up to 640 lines, monitors power
and ringing functions, and recovers and generates clock signals
NT6X51AA
= 64K Memory
NT6X51AB/AC
= 256K Memory
6X52:
Digroup Controller Cards Digroup Controller: functions as an inter-
face for up to threeDS30A links and up to ten LCM drawers; sup-
plies time switching for both external and internal channel
assignments and provides the digital looparound paths used for
troubleshooting
8X46: Parallel Space Time Switches
8X49:
Digital Set Interface Processor
8X47: Enhanced Digital Port Cards. Note: The Meridian 2000 and 3000
series sets can then be connected to (Enhanced) Digital Port Cards
(DPC 8X47BA), with a maximum of 16 voice sets per card (each of
which may optionally be equipped with a Meridian Asynchronous
Data Option).
8X55:
Optional Digital Port Maintenance Card.
Note:
In order to use the
8X55 Digital Maintenance Card (DPMC), the BA release of the
DPC (8X47BA) must be used.
0X50: Filler Panels
6X53: Power Converter: supplies +5V and +15V DC
Intelligent Peripheral Equipment (IPE) shelf
(
NTP 555-4001-129, IPE Reference Manual
)
Note:
The M5000 series (Electronic Business Sets) are not supported.
6D40: PE Power Supply (provides power to the IPE shelf and regulates
all the voltages required by the cards on the shelf.
6D42: Ringing Generator DC (required with Analog and Message Line
Card configurations)
7D05: Face Plate (use when Ringing Generator not required)
7D07: Controller Card (Consists of a mother board and a daughter board).
Uses an MC68020 microprocessor that provides the primary inter-
face for the IPE shelf, processing power for general control, main-
tenance functions, and signaling format conversion between the
network and line cards. The controller card receives messages from
the host XPM (Line Trunk Controller, Line Group Controller, or
Remote Cluster Controller), peripheral line cards, and terminating
devices (such as sets).
8D22: Extended system monitor (XSM) microprocessor located in the IPE
pedestal base. It monitors the operation and status of the IPE power
supplies, ringing gen., column thermal sensors, and blower units.
OPTIONAL LINE CARDS
5D11: Line Side T-1 Interface Line Card (LTI)
8D02: Digital Line Card (DLC)
8D03: Analog Line Card (ALC)
8D09: Analog Message Waiting Line Card (MLC)
8D31: Face Plate Line Card (for use where line cards are not equipped)
DLM Unit 0 DLM Unit 1
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