User's Manual

6 Universal Equipment Modules and packaging

This module is available in two versions:

NT6D39AA

for AC systems

NT6D39DC

for DC systems

The NT6D39 CPU/NET card cage contains 18 card slots which support the

following:

network cards

Clock Controller

Serial Data Interface (SDI)/Enhanced Serial Data Interface (ESDI)

Peripheral Signaling

3-Port Extender (3PE)

mass storage unit

CPU Function

CPU Interface

Changeover Memory Arbitrator (CMA)

Memory

D-Channel Handler Interface (DCHI)

Primary Rate Interface (PRI)/Digital Trunk Interface (DTI)

The NT6D39 CPU/NET Module is powered by a Common Equipment

Power Supply.

Quantity-One per System option 51 system; two per System option 61

system

NT6D44AA, NT6D44DC Meridian Mail Module

System hardware-System option

21/51/51/71

Purpose-The

NT6D4l

Meridian Mail Module is a self-contained unit,

complete with power converters and cooling units. It is designed to

integrate with Meridian 1 Communication Systems but is also available as a

stand-alone system.

This module is available in two versions:

Equipment identification and ordering information 553-3001-154