Mitel 3300 ICP - Troubleshoot the CEPT;DS1 Formatter Card; Troubleshoot the Conference Card

3300 ICP Hardware User Guide
254 Release 3.3
BRI LEDs
Troubleshoot the CEPT/DS1 Formatter Card
Refer to PRI Card troubleshooting for a description of LED behavior.
Troubleshoot the Conference Card
BRI LED State Meaning
Off BRI circuit not in use (no device connected to circuit)
Flashing at 1 Hz Idle device connected to the circuit (layer 1 established)
Flashing at 4 Hz Call being established from device on circuit (layer 2 established)
On Call in progress at device on circuit (layer 3 established)