Nortel Networks Passport 4400 - Manual (Page 77)

Data Modules Passport 4400 Hardware Installation Module
7-3
Low-speed Data Services Modules
The Legacy Data Module (LDM) provides interface ports to support legacy data
protocols in Passport 4400. Additional interface ports are supported through the
use of the Legacy Data Expansion Module (LEM).
Figure 7-3. Legacy Data Module
Figure 7-4. Legacy Data Expansion Module
Back
Indicators
Stacking
Connectors
Rear View
Pins for LDM Memory
Expansion Card
Back
Indicators
Stacking
Connectors
Rear View