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Release 3.3 219
Basic Rate Interface (BRI)
BRI Installation Overview
Before you install the BRI card, ensure that:
• The configuration includes a CEPT Formatter card that has an unused hybrid circuit (one
Rx/Tx pair) configured with DPNSS protocol
• The system has a free DSU slot for the BRI card
• The wiring from the Network Termination Terminal Equipment (NTTE), Network Termina-
tion 1 (NT1), or terminating equipment is Cat 5 UTP
• A computer is available for use as a maintenance PC.
Installation Sequence
Install the BRI card in the following sequence:
• Program the customer data in the 3300 ICP
• Install the BRI interface assembly
• Install the BRI card and make connections
• Connect the terminal equipment.
Install a BRI Interface Assembly
To install the BRI interface assembly:
1. Attach the anti-static strap to your wrist.
2. Unpack the interface assembly and inspect it to ensure that it is not damaged.
3. At the rear of the DSU cabinet, locate the slot in the DSU box that corresponds to the slot
in the system card frame that will be used for the BRI card. The BRI card should be as
close as possible to its associated CEPT card.
4. Remove the blanking plate from the selected slot.
5. Insert the interface assembly extension bracket into the slot with the closed side of the
bracket to the left (when viewed from the rear of the cabinet).
6. Using the screws that secured the blanking plate, secure the interface assembly extension
bracket into the slot.
7. Insert the interface assembly into the slot.
8. Using the screws provided, secure the interface assembly to the extension bracket.