Ethernet Base Module And Interface Modules - Nortel Passport 4400 Series Hardware Installation Manual

Ethernet Base Module and Interface
The Ethernet Base Module performs central processing functions for the 4400. It
must be present in the lowest slot (LIM A) for the unit to function. This module
includes the following:
• processor and memory
• serial access port
• managment port
• ethernet interfaces (AUI or 10BaseT)
• optional plug-in interface modules.
Stacking Connectors
for 10BaseT Module
Power Connector
DRAM
SIMM
Indicator Lights
Management port
Figure 5-1. Components of the Ethernet Base Module
Frame Relay DCE
Reset indicator
serial access port
(Port 1)
Reset
Port 2
Interface
Modules
Figure 5-2. Ethernet Base Module — Rear View
Modules
Fan Connectors
Flash Memory
SIMM
Stacking Connector
for all Modules
Ethernet Access Ports
10BaseT
Port 3
5
Reserved for
future use
Stacking Connector
for T1/E1 Module
AUI
5-1