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Interface Modules (WAN)Passport 4400 Hardware Installation Manual
7-4
Figure 7-4. T1 CSU/DSU Interface Module, Connector, and Pin Assignments
E1 CSU/DSU Interface Module
An E1 CSU/DSU Interface Module provides a direct E1 or fractional E1
connection to a Passport E1 Function Processor, or any other compatible
device. This E1 connection provides a larger communication bandwidth than
the serial connection.
There are two models of E1 CSU/DSU Interface Modules available:
• The E1 CSU/DSU for120 ohms (NTAU96AA)
• The E1 CSU/DSU for 75 ohms (NTAU97AA)
Both Port 2 and Port 3 can support either E1 CSU/DSU module.
Note:
Determining the proper module to use (75 ohms/120
ohms) will depend on the network requirements of the
location of the Passport 4400.
Pin 1
RJ-48
RJ-48 Pin Assignments
1
2
4
5
6
7
8
3
Receive Data from Network
Receive Data from Network
Transmit Data to Network
Transmit Data to Network
Pins 3, 6, 7, 8 Not Connected