Mitel 3000 Manual page 26

Select VoIP from the Setup menu.
Select Change VoIP Endpoint types here...
If the Endpoint screen is not shown it is because an IP address is not available to the
WAN Interface. Ensure the broadband connection is available and working on the
Broadband Module.
Note
Select IP Extension for each endpoint to be configured as an extension.
Click Next >.
Mitel 3000
Broadband Module Manual
23