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Troubleshooting
Release 3.3 241
Troubleshoot the 3300 BRI NSU
One status LED and fifteen circuit LEDs are mounted on the faceplate. The status LED shows
the status of the CEPT link, and each of the circuit LEDs shows the status of one BRI circuit.
The BRI circuit LEDs are also used during card initialization to indicate the progress of the
self-test and to indicate that the download is in progress.
CEPT LED
Troubleshoot the 3300 Universal ASU
LEDs are located on the front panel and indicate the status of the CIM circuit, ONS circuits, LS
circuits, and power.
Copper Interface Module LED
ONS Circuit LEDs
The front panel has 16 LEDs representing the ONS line circuits.
State Meaning
Off CEPT link not established
Flashing at 1 Hz Layer 1 established
Flashing at 4 Hz Layer 2 established
On Call in progress on the DPNSS link
3300 BRI NSU CEPT Port DIP Switch Manufacture Settings
DIP Switch Use Setting Notes
1 Tx Ground Up Off - ungrounded
Not required for RJ-45 connector
2 Rx Ground Up Off - ungrounded
Not required for RJ-45 connector
Note: Site dependant - normally Tx is grounded but that depends if the remote Rx connection is
grounded.
Note: The Music on Hold and Paging Ports do not have an LED to show status
CIM LED State Meaning
Off No Power
Flashing Powered On, BSP Running
On Communication Link synchronized with 3300 Controller
LED State Circuit State Meaning
Off Idle NA
Steady On Off Hook NA
Slow Flash Idle Circuit is manual busy