Nortel Networks BCM50 manual To return the system to operation

Chapter 21 Replacing a main unit 177

Warning: Leakage currents

You must connect the power cord to a grounded outlet before connecting the telephony and data networking cables to the system.

9Connect the Ethernet cable to the LAN port.

10Connect the 25-pair cable to the RJ-21 telephony connector on the front of the main unit.

11Secure the RJ-21 connector to the BCM50 main unit.

If you are using a straight RJ-21 connector, use the two screws on the sides of the connector to secure it.

If you are using a right-angle RJ-21 connector, use the screw on the left side of the connector to secure the left side of the connector. To secure the right side of the connector, use a cable tie to fasten the 25-pair cable to the anchor on the BCM50 main unit.

12Continue with “To return the system to operation”.

To return the system to operation

1Check the Power and Status LEDs on the main unit. Both LEDs should be solid green. If either LED is not solid green, there is a problem with the main unit. Refer to “System status LEDs” on page 59 for a detailed description of the LED states.

2If this system has an expansion unit, check the Power and Status LEDs on the media bay module (MBM) in the expansion unit. Both LEDs should be solid green. If either LED is not solid green, there is a problem with the MBM or the expansion unit. Refer to “Media bay module LEDs (expansion units only)” on page 64 for a detailed description of the LED states.

3If this system has a second expansion unit, check the Power and Status LEDs on the second MBM.

4Use Element Manager to restore the programming. For information about restoring system programming, refer to the BCM50 Administration Guide (N0016868).

5Set the basic configuration parameters. Refer to “Configuring the BCM50 system” on page 123 for more information.

BCM50 Installation and Maintenance Guide