Mitel 5330 IP Phone using Midwest SIP account.

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For most Mitel IP Phones, 5220 and higher, while during power up you hold the volume up button for the system settings. Select no until you get to "Phone Mode", then select yes on "Protocol", change the protocol to SIP, save the settings and reboot.Once the phone has rebooted and come up with the time/date on the screen press the blue "superkey" and then hit the bottom right speed dial button (5215, 5212, 5330 its the bottom left because they only have one row of buttons), this is also known as the prime line button. When you do this the display will show the ip address of the phone.Now, from a computer on the same network (or a network that can route to it) enter the ip address of your phone in your web browser.