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T1, E1, and Digital Voice Modules Passport 4400 Hardware Installation Manual
5-14
ISDN BRI Voice Module
The ISDN BRI Voice Module (IVM-BRI/ST/2 - NTAU76CA) provides the
Passport 4400 unit with ISDN interface for connection to an ISDN PBX, ISDN
phone, or other ISDN protocol and provides external clocking capability.
Note: The previous release of the modules (NTAU76AA and
NTAU76BA) did not provide the BRI clock sync module for
external clocking.
The NTAU76CA requires Ethernet Base Module NTAU01CA Rev. 05, or later.
With a Passport 4450, if the ISDN BRI Voice Module is in the top slot (E), you
must use Rev. 03 or later.
The BRI module connects to the trunk side of an ISDN PBX, serving as one half
of an ISDN tie trunk that connects two ISDN PBXs.
Figure 5-14. ISDN BRI Voice Module (S/T) and Pin Assignments
Attention:
The ISDN BRI Voice Module will not operate with the
Passport 4455. It is used only with the Passport 4430 and
Passport 4450.
Pin 1
RJ-45
RJ-45 Pin Assignments
1
2
4
5
6
7
8
3
Pins 1, 2, 7, 8 Not Connected
Transmit Data to Network
Receive Data from Network
Receive Data from Network
Transmit Data to Network
Network Terminator Mode
RJ-45 Pin Assignments
1
2
4
5
6
7
8
3
Pins 1, 2, 7, 8 Not Connected
Receive Data from Network
Transmit Data to Network
Transmit Data to Network
Receive Data from Network
Terminal Equipment Mode
Back Panel
BRI Clock Sync Module