Aastra Telecom MBU 400TM manual Installing and Registering the Handset

Installing the MBU 400

Installing and Registering the Handset

1.On the back of the phone, insert your thumbnail into the slot at the bottom of the phone, and pull up.

2.Insert the Lithium-ion battery face-up into the handset, making sure that the contacts on the battery connect to the contacts in the body of the phone as shown in the illustration, and then replace the battery cover to the back of the phone.

Contacts of Battery

3.Connect the Handset Charger Base Power Adapter to the 420d Handset Charger, and plug-in the other end to an active power outlet (preferably a continuous outlet without a switch to interrupt its power).

420d Handset Charger

AC 110/220V

420d Handset Charger

Power Adapter

16 MBU 400 Installation Guide