Aastra Telecom MBU 400TM manual Optional MBU and Handset Tasks, Resetting the MBU

Optional MBU and Handset Tasks

This section provides optional tasks you can perform, if required, on the MBU and Aastra 420d Handset(s).

Resetting the MBU

In order for the handsets to register with the MBU, you must press the Reset button on the rear of the MBU. Each time you reset the MBU, the handsets must re-register. Make sure the handset(s) are within range of the MBU for the handset to register properly.

Note: When you reset the MBU, the MBU waits until active calls have been completed on the handsets before starting the reset process. If a registered handset is off during an MBU reset, it reconnects when turned on, as long as the MBU was not factory defaulted.

To reset the MBU:

•Press and release the Reset button once (do not hold down) on the rear of the MBU.

The POWER LED lights up steady, and the I-NET LED flashes.

When the reset is complete, the I-NET LED lights up steady, indicat- ing the MBU is ready to use.

Note: Check to be sure all handsets registered (or reconnected) properly with the MBU after the reset is complete.

Manually Registering/De-registering a Handset

If required, you can manually register and deregister a handset. Make sure your handset is within range of the MBU before registering/deregistering your handset.

To register/deregister the handset:

1.In Idle mode, press OK to display the Main Menu.

2.Press Settings.

3.Select System Settings, and press OK.

4.Select Handset Settings, and press OK.

5.To deregister the handset, select Deregister handset and press Yes at the prompt. The handset prompts to be placed in its charger cradle, so that auto-registration can occur.

Optional MBU and Handset Tasks

MBU 400 Installation Guide 19