AASTRA SIP-DECT (Release 1.8)-Installation- and Administration Guide EN - Manual (Page 77)

Installation, Administration and Maintenance
Aastra depl-0900/0.4 Page: 77 (104)
Important: Before a new handset firmware package is put on a tftp
server, the Download over Air feature must be deactivated
on the System Settings web page. After the copy or
installation the Download over Air feature can be activated
again.
The Download over Air service is delayed after a system start-up for a while
to become the whole DECT system active. This may last several minutes.
If the Download over Air feature is activated the status of the Download over
Air service together with some statistics is presented on the “Status” web
page.
The individual download status of each PP is presented on the “Portable
Part” web page.
PP is busy.