Filter
Top Products
Interface Modules (WAN) Passport 4400 Hardware Installation Manual
7-3
Figure 7-3. 56kbps CSU/DSU Interface Module, Connector, and Pin Assignments
T1 CSU/DSU Interface Module
The T1 CSU/DSU Interface Module (NTAU04AA) provides a direct T1 or
fractional T1 (DSU/CSU) connection to a local digital PBX, a DS-1 interface to
T1 network services, or any other compatible device. The T1 connection provides
a larger communication bandwidth than the serial connection.
Note:
Refer to Appendix B, Regulatory and Telephone Company
Requirements for agency and telephone company
requirements.
The T1 CSU/DSU Interface Module can be placed in Port 2 or Port 3.
The interface module must be inserted into the unit with the component side
facing down.
Note:
A T1 Access Voice module interface is also available for use
in Passport 4400 units. Refer to Chapter 5, T1, E1, and Digital
Voice Modules, of this manual for information about the T1
Access Voice module.
An 8-pin RJ-48C jack is provided to interface with the T1 network.
1
2
4
5
6
7
8
3
RJ-48 Pin Assignments
Transmit data to Network
Transmit data to Network
Receive data from Network
Receive data from Network
Pins 3, 4, 5, 6 Not Connected
Pin 1
RJ-48
,