AASTRA 4425 IP Vision (SIP) for MX-ONE User Guide - Manual (Page 111)

Web Server
Dialog 4425 IP Vision 112
To access your IP phone from a PC
http://153.88.8.192 Enter the IP address in the address field in your web browser.
(This address is an example. The web browser shows:
Note: If you have entered the same IP address you
previously used and you could not access the web server,
then check the address on your phone display. If your
phone has been plugged off for a few days, the address
may have been changed. *******
Enter the telephone PIN or password.
Note:
The password is case sensitive.
The PIN is the same as the Individual Authorization Code.
Only digits can be used as PIN. The PIN must be four digits
or more.