How do you reset the time on the mitel 5220 ip phones

if you go to voicemail then it will say hit "u" for user options, then hit "p" or "7" to change passcode.
i just did that(:

Unplug the power from the phone. Hold down the Down Arrow key, and power it back on while holding the key. You will get an option to default the phone to factory settings.

The time on the phone comes from the hosting system, a 3300, 200 or 5000. Somone with access to this system needs to change the time for you.

The time is set within the phone system, not on the telephone. Contact your vendor for this change.

Dial 58#. Listen for quick beep. Press key between 2-9.

Make sure that it is a Dual Mode 5220. If it is you can use it as a SIP extension. It wiill say it on the back of the Mitel phone next to the 5220.
If it is a dual mode phone you can purchase a sip trunk from a provider and then would be able to use the phone.
When you boot up the phone hold the blue super key while the phone boots, hit the no softkey till you get to phone mode. Hit yes it will allow you to change the phone from minet to sip. This should get you started in the right direction.

Are you attempting to upgrade the firmware on the phone, or the phone system itself?
We have a SX-200 ICP and are currently in the process of upgrading so our teleworkers can use newer phones than the 5220's. It requires you have a current support agreement with your vendor because you have to be able to log into Mitel's Application Management Center (http://www.mitel-amc.com).

You'll need to log into the voicemail server or PBX that hosts the VM and reset the passcode for each mailbox you're trying to access. If you have an embedded Mitel VM you can change the passcode by logging into the Admin mailbox then select option 2 to edit mailboxes, pick the mailbox to edit and follow the prompts until you have the option to change passcode

What Mitel phone system do you have. 3300ICP you can change it in programming same with a 200ICP.

To Restore Factory Default Settings:
1. Press both Up and Down Arrow keys simultaneously while powering up the
phone. NETWORK SETTINGS? appears
2. Press NO until TOOLS & FEATURES appears and then press YES.
3. Press NO until RESTORE DEFAULTS? appears and then press YES.
4. Press CONFIRM. The phone resets with default settings.