Aastra Telecom 41-001286-00 Manuel D’Utilisation

Aastra MBU 400 User Guide

 21

To set some advanced MBU configuration options using an Internet browser, the 
System Administrator needs the IP address of the phone. You can view the MBU IP 
address and status information from the 420d handset screen. For setting advanced 
configuration options, ask your System Administrator or refer to the Aastra MBU 
400 Administrator Guide

To view the IP address and status of the MBU, do the following.

1.  After pairing the handset to the MBU, press the + volume button on the side of the 

handset.

Navigation Keys - Scroll though menu items using 
the left, right, top, and bottom navigational keys.

Star Key - Change the input mode while entering text 
using the star key. The current input mode displays 
on the upper right corner of the screen. (See 

 for text input details.)

Lock or unlock the keypad from idle mode using the 
star key (press * then the Lock or Unlock softkey). A 
key appears at the top of the handset display when 
the keypad is locked. (See 

 for details.)

Number Key - Toggle on or off the silent mode from 
the idle screen by pressing the “#” key, and pressing 
the Silence on or Silence off softkey as required

Volume Keys - (Located on the side of the handset.) 
Use the volume + and - keys during an active call to 
adjust the call volume.

From idle mode, use the volume + key to view the 
system status menu, including the MAC address and 
IP address of your phone system.

Speakerphone Key - (Located on the side of the 
handset.) Toggle the speakerphone on and off using 
the speakerphone key.

*

#

+

-

!