# Programming BRI Trunks

## Before You Begin

Ensure that:

- Interconnect Restriction and Intercept Handling are programmed for each trunk.

- The local carrier service can support 64 Kbps data calls.

NOTE: For video conferencing over a BRI interface, the central office (CO) must support 64 Kbps clear channel data calls.

## Programming

To program BRI trunks:

1. Digital Link Descriptors form

- Enter "A" or "B" in the Address for Message Control field.

- Enter "DPNSS" in the Integrated Digital Access field.

2. Digital Links form

- Complete the Digital Link Descriptor Number field.

3. Class of Service Options form

- Set the ANI/DNIS ISDN Number Delivery Trunk field to "Yes".

4. Trunk Circuit Descriptor - MSDN-DPNSS-DASS II form

- Enter "MSDN-DPNSS" in the Signaling Protocol field, "CEPT" in the Card Type field, "Incoming" or "Outgoing" (depending upon your system) in the Dual Seizure Priority field, "LT" for NA, or either "LT" or "NT" for EMEAAP in the BRI Mode field, and "Local Office" in the Far End Connection field.

5. Trunk Attributes form

- Complete the COS number.

- Set the Dial in Trunks: Incoming Digit Modification field to "absorb".

6. Digital Trunks form

- Complete the Trunk Number, Trunk Service Number, Circuit Descriptor, and Interconnect Number fields.

7. Network Synchronization form (optional)

- Assign a source connection to a Network Source Clock.

The system programming is now complete.