26 Aastra MBU 400 User Guide
Using the 420d Handset
Handset Main Menu
To display the Main Menu on the handset, press the circular OK key z in the center of
the navigation keys as shown below.

Main Menu

The following icons appear on the Main Menu screen.
The Handset Main Menu has five options to choose between when customizing and
operating the phone.
Landline Allows you to place a call using the landline.
See Landline Calls on page 43.
DND Allows you to enable/disable Do Not Disturb on your phone.
See Setting Do Not Disturb on page 37.
Call Waiting Allows you to enable/disable Call Waiting on your phone.
See Setting Call Waiting on page 37.
Idle Mode Options (Continued)
Navigation Keys OK Key
(opens the Main Menu)
Contacts
Contacts
OK Key Indicator
Indicates that the OK key can
be used.
Settings
Call Log
Messages (voicemail)
Intercom
Contacts
Main Menu Icon Description
Intercom - Allows you use the Intercom to communicate between two handsets
registered to the same MBU.
For more information, see Intercom Calls on page 43.
Messages - Allows you to access and play your voicemail messages. Your voicemail
service can be provided by your Service Provider or a local mail server. If using a Service
Provider for voicemail, contact that provider for more information on how to use your
voicemail service.
For more information, see Voicemail on page 59.