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Interface Modules (WAN) Passport 4400 Hardware Installation Manual
7-5
E1 CSU/DSU Interface Module (120 ohms)
The interface module must be inserted into the unit with the component side
facing down.
An 8-pin RJ-48C jack is provided to interface with the E1 network.
Figure 7-5. E1 CSU/DSU Interface Module, Connector, and Pin Assignments
(120 ohms)
E1 CSU/DSU Interface Module (75 ohms)
The interface module must be inserted into the unit with the component side
facing down.
Figure 7-6. 3/4 and Back View of E1 CSU Interface Module (75 ohms)
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
Rear View
E1
RX
TX