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Connecting the Expansion Modules Passport 4400 Hardware Installation Manual
4-3
Procedure 4: Attaching cables to the High-speed Data Module
Note: The connections made in this procedure will depend on the
specific site requirements. If you are not sure of the exact
connections required for the Passport 4400 unit, consult your
system administrator.
1. As required, use a DB50 cable to connect each MD50 port to your local
equipment.
For further informationaboutcablesand pin assignments, see AppendixA,“Cable
Diagram Pin Assignments.”
Legacy Data Module (LDM) and Legacy Data Expansion Module (LEM)
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 4-3. Rear View of the Legacy Data Module
Figure 4-4. Rear View of the Legacy Data Expansion Module
1
2
3
4
5
6
7
8
9
Rx+
Tx-
Rx-
Tx+
RJ45
Pin 1
1
2
3
4
5
6
7
8
Data Terminal Ready
Signal Ground
Receive Data
Transmit Data
Clear to Send
see Figure 4-2
1
Pins 1, 2, 8 Not Connected
DB9 connector for Token
Ring serial interface
Pins 2, 3, 4, 7, 8 Not Connected
Management Port
RJ45 interface
see Figure 4-2